技术领域technical field
本发明有关LED发光装置，尤指一种可提升LED发光装置的发光效能的驱动电路及相关的LED发光装置。The present invention relates to an LED light emitting device, in particular to a driving circuit capable of improving the luminous efficiency of the LED light emitting device and the related LED light emitting device.
背景技术Background technique
为了提升发光功率，有些LED发光装置会采用多个驱动电路并联的架构来分别驱动多组LED阵列。理想上，并联的多个驱动电路应该同步进行控制信号的切换，才能极大化LED发光装置的发光功率。In order to increase the luminous power, some LED lighting devices adopt a structure in which multiple driving circuits are connected in parallel to respectively drive multiple sets of LED arrays. Ideally, multiple driving circuits connected in parallel should switch control signals synchronously so as to maximize the luminous power of the LED lighting device.
然而，驱动电路彼此间难免会有制程变异性(process variation)存在，且不同的驱动电路的运作是彼此独立进行的。因此，在传统的LED发光装置中，并联的多个驱动电路往往不会同时进行控制信号的切换，因而降低了LED发光装置的发光功率。如此一来，不只降低了LED发光装置的整体能源使用效率，还会产生更多不必要的废热。However, it is inevitable that there will be process variation among the driving circuits, and the operations of different driving circuits are performed independently of each other. Therefore, in a conventional LED lighting device, multiple driving circuits connected in parallel often do not switch control signals at the same time, thus reducing the luminous power of the LED lighting device. In this way, not only the overall energy efficiency of the LED lighting device is reduced, but also more unnecessary waste heat will be generated.
发明内容Contents of the invention
有鉴于此，如何有效提升LED发光装置的发光效能，实为业界有待解决的问题。In view of this, how to effectively improve the luminous efficiency of LED lighting devices is a problem to be solved in the industry.
本发明提供一种LED发光装置的实施例，其包含：一整流器，设置成依据一交流信号产生一整流信号；一第一LED阵列，耦接于该整流信号，且包含串联的多个LED装置；一第一开关阵列，耦接于该整流信号，且包含串联的多个开关元件以及位于该第一开关阵列的电流路径上的多个节点，其中，该第一开关阵列的该多个节点分别耦接于该第一LED阵列的该多个LED装置，使得该第一开关阵列的该多个开关元件分别并联于该第一LED阵列的该多个LED装置；一第一驱动电路，包含有：一第一信号引脚；一判断电路，设置成判断一输入信号的大小；一指示信号产生电路，耦接于该判断电路与该第一信号引脚，设置成依据该判断电路的判断结果输出一指示信号至该第一信号引脚；一对齐信号产生电路，耦接于该第一信号引脚，设置成在受到该第一信号引脚上的信号的一预定边缘触发时，产生一对齐信号；一指示信号侦测电路，耦接于该第一信号引脚，设置成侦测该第一信号引脚上的信号以产生一侦测信号；以及一控制信号产生电路，耦接于该对齐信号产生电路、该指示信号侦测电路、以及该第一开关阵列，设置成在受到该对齐信号触发时，依据该侦测信号产生多个控制信号，以分别控制该第一开关阵列的该多个开关元件；一第二LED阵列，耦接于该整流信号，且包含串联的多个LED装置以及位于该第二LED阵列的电流路径上的多个节点；一第二开关阵列，耦接于该整流信号，且包含串联的多个开关元件，其中，该第二开关阵列的该多个开关元件分别耦接于该第二LED阵列的该多个节点，使得该第二开关阵列的该多个开关元件分别并联于该第二LED阵列的该多个LED装置；以及一第二驱动电路，耦接于该第二开关阵列，具有与该第一驱动电路相同的电路架构，且设置成控制该第二开关阵列的该多个开关元件；其中，该第一驱动电路的该第一信号引脚耦接于该第二驱动电路的一第一信号引脚，以致使该第一驱动电路与该第二驱动电路会同时调整该第一开关阵列与该第二开关阵列的切换时序。The present invention provides an embodiment of an LED lighting device, which includes: a rectifier configured to generate a rectified signal according to an AC signal; a first LED array coupled to the rectified signal and including a plurality of LED devices connected in series a first switch array, coupled to the rectified signal, and includes a plurality of switch elements connected in series and a plurality of nodes on the current path of the first switch array, wherein the plurality of nodes of the first switch array respectively coupled to the plurality of LED devices of the first LED array, so that the plurality of switching elements of the first switch array are respectively connected in parallel to the plurality of LED devices of the first LED array; a first driving circuit, comprising There are: a first signal pin; a judging circuit, configured to judge the magnitude of an input signal; an indication signal generating circuit, coupled to the judging circuit and the first signal pin, configured to judge according to the judging circuit As a result, an indication signal is output to the first signal pin; an alignment signal generating circuit, coupled to the first signal pin, is configured to be triggered by a predetermined edge of the signal on the first signal pin to generate an alignment signal; an indication signal detection circuit, coupled to the first signal pin, configured to detect the signal on the first signal pin to generate a detection signal; and a control signal generation circuit, coupled to The alignment signal generation circuit, the indication signal detection circuit, and the first switch array are configured to generate a plurality of control signals according to the detection signal to respectively control the first switch array when triggered by the alignment signal The plurality of switching elements; a second LED array, coupled to the rectified signal, and including a plurality of LED devices connected in series and a plurality of nodes on the current path of the second LED array; a second switch array, coupled to the rectified signal, and includes a plurality of switching elements in series, wherein the plurality of switching elements of the second switch array are respectively coupled to the plurality of nodes of the second LED array, so that the second switch array The plurality of switching elements are respectively connected in parallel to the plurality of LED devices of the second LED array; and a second driving circuit, coupled to the second switching array, has the same circuit structure as the first driving circuit, and set to control the plurality of switch elements of the second switch array; wherein, the first signal pin of the first drive circuit is coupled to a first signal pin of the second drive circuit, so that the first The driving circuit and the second driving circuit simultaneously adjust the switching timing of the first switch array and the second switch array.
本发明另提供一种用于一LED发光装置中的一第一驱动电路的实施例。该LED发光装置包含有一整流器、一第一LED阵列、以及一第一开关阵列，该整流器设置成依据一交流信号产生一整流信号，该第一LED阵列耦接于该整流信号，且包含串联的多个LED装置，该第一开关阵列耦接于该整流信号，且包含串联的多个开关元件以及位于该第一开关阵列的电流路径上的多个节点，其中，该第一开关阵列的该多个节点分别耦接于该第一LED阵列的该多个LED装置，使得该第一开关阵列的该多个开关元件分别并联于该第一LED阵列的该多个LED装置。该第一驱动电路包含有：一第一信号引脚；一判断电路，设置成判断一输入信号的大小；一指示信号产生电路，耦接于该判断电路与该第一信号引脚，设置成依据该判断电路的判断结果输出一指示信号至该第一信号引脚；一对齐信号产生电路，耦接于该第一信号引脚，设置成在受到该第一信号引脚上的信号的一预定边缘触发时，产生一对齐信号；一指示信号侦测电路，耦接于该第一信号引脚，设置成侦测该第一信号引脚上的信号以产生一侦测信号；以及一控制信号产生电路，耦接于该对齐信号产生电路、该指示信号侦测电路、以及该第一开关阵列，设置成在受到该对齐信号触发时，依据该侦测信号产生多个控制信号，以分别控制该多个开关元件。The present invention further provides an embodiment of a first driving circuit used in an LED lighting device. The LED lighting device includes a rectifier, a first LED array, and a first switch array, the rectifier is configured to generate a rectified signal according to an AC signal, the first LED array is coupled to the rectified signal, and includes a series A plurality of LED devices, the first switch array is coupled to the rectified signal, and includes a plurality of switch elements connected in series and a plurality of nodes on the current path of the first switch array, wherein the first switch array A plurality of nodes are respectively coupled to the plurality of LED devices of the first LED array, so that the plurality of switch elements of the first switch array are respectively connected in parallel to the plurality of LED devices of the first LED array. The first drive circuit includes: a first signal pin; a judging circuit, configured to judge the magnitude of an input signal; an indication signal generating circuit, coupled to the judging circuit and the first signal pin, configured to Outputting an indication signal to the first signal pin according to the judgment result of the judgment circuit; an alignment signal generating circuit, coupled to the first signal pin, configured to receive a signal on the first signal pin When a predetermined edge is triggered, an alignment signal is generated; an indication signal detection circuit is coupled to the first signal pin and configured to detect a signal on the first signal pin to generate a detection signal; and a control A signal generation circuit, coupled to the alignment signal generation circuit, the indication signal detection circuit, and the first switch array, configured to generate a plurality of control signals according to the detection signal when triggered by the alignment signal, to respectively The plurality of switching elements are controlled.
本发明另提供一种LED发光装置的实施例，其包含：一整流器，设置成依据一交流信号产生一整流信号；一第一LED阵列，耦接于该整流信号，且包含串联的多个LED装置；一第一开关阵列，耦接于该整流信号，且包含串联的多个开关元件以及位于该第一开关阵列的电流路径上的多个节点，其中，该第一开关阵列的该多个节点分别耦接于该第一LED阵列的该多个LED装置，使得该第一开关阵列的该多个开关元件分别并联于该第一LED阵列的该多个LED装置；一第一驱动电路，包含有：一第一信号引脚；一第二信号引脚；一判断电路，设置成判断一输入信号的大小；一指示信号产生电路，耦接于该判断电路与该第二信号引脚，设置成依据该判断电路的判断结果输出一指示信号至该第二信号引脚；一对齐信号产生电路，耦接于该第一信号引脚，设置成在受到该第一信号引脚上的信号的一预定边缘触发时，产生一对齐信号；一指示信号侦测电路，耦接于该第一信号引脚，设置成侦测该第一信号引脚上的信号以产生一侦测信号；以及一控制信号产生电路，耦接于该对齐信号产生电路、该指示信号侦测电路、以及该第一开关阵列，设置成在受到该对齐信号触发时，依据该侦测信号产生多个控制信号，以分别控制该第一开关阵列的该多个开关元件；一第二LED阵列，耦接于该整流信号，且包含串联的多个LED装置以及位于该第二LED阵列的电流路径上的多个节点；一第二开关阵列，耦接于该整流信号，且包含串联的多个开关元件，其中，该第二开关阵列的该多个开关元件分别耦接于该第二LED阵列的该多个节点，使得该第二开关阵列的该多个开关元件分别并联于该第二LED阵列的该多个LED装置；以及一第二驱动电路，耦接于该第二开关阵列，具有与该第一驱动电路相同的电路架构，且设置成控制该第二开关阵列的该多个开关元件；其中，该第一驱动电路的该第一信号引脚与该第二信号引脚都耦接于该第二驱动电路的一第一信号引脚，但不与该第二驱动电路的一第二信号引脚相耦接，以致使该第一驱动电路与该第二驱动电路会同时调整该第一开关阵列与该第二开关阵列的切换时序。The present invention further provides an embodiment of an LED lighting device, which includes: a rectifier configured to generate a rectified signal according to an AC signal; a first LED array coupled to the rectified signal and including a plurality of LEDs connected in series device; a first switch array, coupled to the rectified signal, and comprising a plurality of switch elements connected in series and a plurality of nodes on a current path of the first switch array, wherein the plurality of switch elements of the first switch array Nodes are respectively coupled to the plurality of LED devices of the first LED array, so that the plurality of switching elements of the first switch array are respectively connected in parallel to the plurality of LED devices of the first LED array; a first driving circuit, It includes: a first signal pin; a second signal pin; a judging circuit configured to judge the magnitude of an input signal; an indication signal generating circuit coupled to the judging circuit and the second signal pin, set to output an indication signal to the second signal pin according to the judgment result of the judging circuit; an alignment signal generating circuit, coupled to the first signal pin, configured to receive the signal on the first signal pin An alignment signal is generated when triggered by a predetermined edge; an indication signal detection circuit, coupled to the first signal pin, is configured to detect a signal on the first signal pin to generate a detection signal; and A control signal generation circuit, coupled to the alignment signal generation circuit, the indication signal detection circuit, and the first switch array, configured to generate a plurality of control signals according to the detection signal when triggered by the alignment signal, to respectively control the plurality of switching elements of the first switch array; a second LED array, coupled to the rectified signal, and comprising a plurality of LED devices connected in series and a plurality of LED devices located on the current path of the second LED array node; a second switch array, coupled to the rectified signal, and includes a plurality of switch elements connected in series, wherein the plurality of switch elements of the second switch array are respectively coupled to the plurality of switch elements of the second LED array nodes, so that the plurality of switch elements of the second switch array are respectively connected in parallel to the plurality of LED devices of the second LED array; and a second driving circuit, coupled to the second switch array, has the The drive circuit has the same circuit structure and is configured to control the plurality of switch elements of the second switch array; wherein, the first signal pin and the second signal pin of the first drive circuit are both coupled to the first signal pin A first signal pin of two driving circuits, but not coupled with a second signal pin of the second driving circuit, so that the first driving circuit and the second driving circuit will adjust the first switch simultaneously The switching timing of the array and the second switch array.
本发明另提供一种用于一LED发光装置中的一第一驱动电路的实施例。该LED发光装置包含有一整流器、一第一LED阵列、以及一第一开关阵列，该整流器设置成依据一交流信号产生一整流信号，该第一LED阵列耦接于该整流信号，且包含串联的多个LED装置，该第一开关阵列耦接于该整流信号，且包含串联的多个开关元件以及位于该第一开关阵列的电流路径上的多个节点，其中，该第一开关阵列的该多个节点分别耦接于该第一LED阵列的该多个LED装置，使得该第一开关阵列的该多个开关元件分别并联于该第一LED阵列的该多个LED装置。该第一驱动电路包含有：一第一信号引脚；一第二信号引脚；一判断电路，设置成判断一输入信号的大小；一指示信号产生电路，耦接于该判断电路与该第二信号引脚，设置成依据该判断电路的判断结果输出一指示信号至该第二信号引脚；一对齐信号产生电路，耦接于该第一信号引脚，设置成在受到该第一信号引脚上的信号的一预定边缘触发时，产生一对齐信号；一指示信号侦测电路，耦接于该第一信号引脚，设置成侦测该第一信号引脚上的信号以产生一侦测信号；以及一控制信号产生电路，耦接于该对齐信号产生电路、该指示信号侦测电路、以及该第一开关阵列，设置成在受到该对齐信号触发时，依据该侦测信号产生多个控制信号，以分别控制该多个开关元件。The present invention further provides an embodiment of a first driving circuit used in an LED lighting device. The LED lighting device includes a rectifier, a first LED array, and a first switch array, the rectifier is configured to generate a rectified signal according to an AC signal, the first LED array is coupled to the rectified signal, and includes a series A plurality of LED devices, the first switch array is coupled to the rectified signal, and includes a plurality of switch elements connected in series and a plurality of nodes on the current path of the first switch array, wherein the first switch array A plurality of nodes are respectively coupled to the plurality of LED devices of the first LED array, so that the plurality of switch elements of the first switch array are respectively connected in parallel to the plurality of LED devices of the first LED array. The first driving circuit includes: a first signal pin; a second signal pin; a judging circuit configured to judge the magnitude of an input signal; an indication signal generating circuit coupled between the judging circuit and the first Two signal pins, configured to output an indication signal to the second signal pin according to the judgment result of the judgment circuit; an alignment signal generating circuit, coupled to the first signal pin, configured to receive the first signal When a predetermined edge of the signal on the pin is triggered, an alignment signal is generated; an indication signal detection circuit, coupled to the first signal pin, is configured to detect the signal on the first signal pin to generate a a detection signal; and a control signal generation circuit, coupled to the alignment signal generation circuit, the indication signal detection circuit, and the first switch array, configured to generate according to the detection signal when triggered by the alignment signal A plurality of control signals are used to respectively control the plurality of switching elements.
上述实施例的优点之一，是LED发光装置中的多个驱动电路会同时调整对应的多个开关阵列的切换时序，使得并联的多个LED阵列的操作态样会在同一时间点切换，藉此可有效提升LED发光装置的发光效能和整体能源使用效率。One of the advantages of the above embodiment is that multiple driving circuits in the LED lighting device can simultaneously adjust the switching timing of the corresponding multiple switch arrays, so that the operating modes of multiple LED arrays connected in parallel can be switched at the same time point. This can effectively improve the luminous efficacy and the overall energy utilization efficiency of the LED lighting device.
本发明的其他优点将藉由以下的说明和附图进行更详细的解说。Other advantages of the present invention will be explained in more detail with the following description and accompanying drawings.
附图说明Description of drawings
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application.
图1与图2为本发明一第一实施例的LED发光装置简化后的功能方块图。1 and 2 are simplified functional block diagrams of an LED lighting device according to a first embodiment of the present invention.
图3为本发明一第二实施例的LED发光装置简化后的功能方块图。FIG. 3 is a simplified functional block diagram of an LED lighting device according to a second embodiment of the present invention.
图4与图5为本发明一第三实施例的LED发光装置简化后的功能方块图。4 and 5 are simplified functional block diagrams of an LED lighting device according to a third embodiment of the present invention.
图6为本发明一第四实施例的LED发光装置简化后的功能方块图。FIG. 6 is a simplified functional block diagram of an LED lighting device according to a fourth embodiment of the present invention.
【符号说明】【Symbol Description】
100、300、400、600 LED发光装置100, 300, 400, 600 LED lighting devices
110 整流器110 rectifier
120a、120b、120c LED阵列120a, 120b, 120c LED array
121～125 LED装置121～125 LED devices
130a、130b 开关阵列130a, 130b switch array
131～135 开关元件131～135 Switching elements
140a、140b、140c、440a、440b、440c 驱动电路140a, 140b, 140c, 440a, 440b, 440c drive circuit
141 判断电路141 Judgment circuit
142 指示信号产生电路142 Indication signal generating circuit
143 对齐信号产生电路143 Alignment signal generating circuit
144 指示信号侦测电路144 Indication signal detection circuit
145 控制信号产生电路145 Control signal generating circuit
P1 第一信号引脚P1 first signal pin
P2 第二信号引脚P2 Second signal pin
S1～Sn 节点S1～Sn nodes
具体实施方式detailed description
以下将配合相关附图来说明本发明的实施例。在附图中，相同的标号表示相同或类似的元件或方法流程。Embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals represent the same or similar elements or method flows.
图1与图2为本发明一第一实施例的LED发光装置100简化后的功能方块图。如图1与图2所示，LED发光装置100包含有一整流器(rectifier)110、多个并联的LED阵列(LED array)、多个并联的开关阵列(switch array)、以及多个并联的驱动电路。为了方便说明起见，在图1与图2中仅绘示一第一LED阵列120a、一第二LED阵列120b、一第三LED阵列120c、一第一开关阵列130a、一第二开关阵列130b、一第三开关阵列130c、一第一驱动电路140a、一第二驱动电路140b、以及一第三驱动电路140c为例。1 and 2 are simplified functional block diagrams of an LED lighting device 100 according to a first embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the LED lighting device 100 includes a rectifier (rectifier) 110, multiple parallel LED arrays (LED array), multiple parallel switch arrays (switch array), and multiple parallel drive circuits. . For convenience of description, only a first LED array 120a, a second LED array 120b, a third LED array 120c, a first switch array 130a, a second switch array 130b, A third switch array 130c, a first driving circuit 140a, a second driving circuit 140b, and a third driving circuit 140c are taken as examples.
整流器110设置成依据一交流信号Vac产生一整流信号(rectifiedsignal)HV。第一LED阵列120a耦接于整流信号HV，且包含串联的多个LED装置(例如，图1与图2中所绘示的LED装置121～125)，其中，每一LED装置都包含有一或多个LED元件，且不同LED装置中的LED元件数量可以相同也可以不同。第一开关阵列130a耦接于整流信号HV，且包含串联的多个开关元件(例如，图1与图2中所绘示的开关元件131～135)，以及位于第一开关阵列130a的电流路径上的多个节点S1～Sn。如图所示，第一开关阵列130a的多个节点S1～Sn分别耦接于第一LED阵列120a的多个LED装置121～125，使得第一开关阵列130a的多个开关元件131～135分别并联于第一LED阵列120a的多个LED装置121～125。第一驱动电路140a耦接于第一开关阵列130a，设置成控制第一开关阵列130a中的多个开关元件131～135的切换运作。The rectifier 110 is configured to generate a rectified signal HV according to an AC signal Vac. The first LED array 120a is coupled to the rectified signal HV, and includes a plurality of LED devices connected in series (for example, the LED devices 121-125 shown in FIG. 1 and FIG. 2 ), wherein each LED device includes one or more LED devices. Multiple LED elements, and the number of LED elements in different LED devices can be the same or different. The first switch array 130a is coupled to the rectified signal HV, and includes a plurality of switch elements connected in series (for example, the switch elements 131-135 shown in FIG. 1 and FIG. 2 ), and a current path located in the first switch array 130a. Multiple nodes S1~Sn on the network. As shown in the figure, the multiple nodes S1-Sn of the first switch array 130a are respectively coupled to the multiple LED devices 121-125 of the first LED array 120a, so that the multiple switch elements 131-135 of the first switch array 130a are respectively A plurality of LED devices 121-125 are connected in parallel to the first LED array 120a. The first driving circuit 140a is coupled to the first switch array 130a and configured to control the switching operation of the plurality of switch elements 131 - 135 in the first switch array 130a.
如图1所示，第一驱动电路140a包含有一第一信号引脚P1、一判断电路(determining circuit)141、一指示信号产生电路(indication signal generatingcircuit)142、一对齐信号产生电路(alignment signal generating circuit)143、一指示信号侦测电路(indication signal detecting circuit)144、以及一控制信号产生电路(control signal generating circuit)145。As shown in Figure 1, the first drive circuit 140a includes a first signal pin P1, a determination circuit (determining circuit) 141, an indication signal generating circuit (indication signal generating circuit) 142, an alignment signal generating circuit (alignment signal generating circuit) 143 , an indication signal detecting circuit (indication signal detecting circuit) 144 , and a control signal generating circuit (control signal generating circuit) 145 .
在第一驱动电路140a中，判断电路141设置成判断一输入信号的大小，藉以侦测交流信号Vac的相位变化。在本实施例中，判断电路141的输入信号是整流器110所输出的整流信号HV。实作上，判断电路141可采用习知的电路架构来判断整流信号HV的大小，以产生相对应的上升信号(up signal)UP或下降信号(down signal)DN。In the first driving circuit 140a, the judging circuit 141 is configured to judge the magnitude of an input signal, so as to detect the phase change of the AC signal Vac. In this embodiment, the input signal of the judging circuit 141 is the rectified signal HV output by the rectifier 110 . In practice, the judging circuit 141 can use a known circuit structure to judge the magnitude of the rectified signal HV to generate a corresponding up signal UP or down signal DN.
指示信号产生电路142耦接于判断电路141与第一信号引脚P1，设置成依据判断电路141的判断结果输出一指示信号至第一信号引脚P1。例如，当指示信号产生电路142接收到判断电路141的判断结果时，可在经过一段预定延迟时间(predetermined delay period)后，输出一相对应的指示信号至第一信号引脚P1。例如，当指示信号产生电路142接收到前述的上升信号UP时，可在经过一段预定延迟时间之后输出具有一第一电位的指示信号至第一信号引脚P1，而当指示信号产生电路142接收到前述的下降信号DN时，可在经过一段预定延迟时间之后输出具有一相异的第二电位的指示信号至第一信号引脚P1。The indicating signal generating circuit 142 is coupled to the judging circuit 141 and the first signal pin P1 , and is configured to output an indicating signal to the first signal pin P1 according to the judging result of the judging circuit 141 . For example, when the indication signal generation circuit 142 receives the determination result of the determination circuit 141 , it may output a corresponding indication signal to the first signal pin P1 after a predetermined delay period (predetermined delay period). For example, when the indication signal generation circuit 142 receives the aforementioned rising signal UP, it can output an indication signal having a first potential to the first signal pin P1 after a predetermined delay time, and when the indication signal generation circuit 142 receives the When the aforementioned falling signal DN is reached, an indication signal having a different second potential can be output to the first signal pin P1 after a predetermined delay time.
换言之，指示信号产生电路142输出至第一信号引脚P1上的指示信号，会反应出第一驱动电路140a中的判断电路141的判断结果。In other words, the indication signal output from the indication signal generation circuit 142 to the first signal pin P1 will reflect the judgment result of the judgment circuit 141 in the first driving circuit 140a.
在第一驱动电路140a中，指示信号产生电路142将指示信号输出到第一信号引脚P1的时间点，代表着第一驱动电路140a打算(intend to)调整第一开关阵列130a中的多个开关元件131～135的切换时序的时间点。In the first driving circuit 140a, the time point when the indication signal generation circuit 142 outputs the indication signal to the first signal pin P1 represents that the first driving circuit 140a intends to adjust the multiple switches in the first switch array 130a. Timings of switching timing of the switching elements 131 to 135 .
对齐信号产生电路143耦接于第一信号引脚P1，设置成在受到第一信号引脚P1上的信号的一预定边缘(例如，上升缘或下降缘)触发时，产生一对齐信号。The alignment signal generating circuit 143 is coupled to the first signal pin P1 and configured to generate an alignment signal when triggered by a predetermined edge (eg, a rising edge or a falling edge) of a signal on the first signal pin P1 .
指示信号侦测电路144耦接于第一信号引脚P1，设置成侦测第一信号引脚P1上的信号以产生一侦测信号。若第一信号引脚P1上当时的信号是具有前述第一电位的信号，则指示信号侦测电路144可产生与前述的上升信号UP相类似或相同的信号以作为该侦测信号。若第一信号引脚P1上当时的信号是具有前述第二电位的信号，则指示信号侦测电路144可产生与前述的下降信号DN相类似或相同的信号以作为该侦测信号。The indication signal detection circuit 144 is coupled to the first signal pin P1 and configured to detect a signal on the first signal pin P1 to generate a detection signal. If the current signal on the first signal pin P1 is a signal with the aforementioned first potential, the indication signal detection circuit 144 may generate a signal similar or identical to the aforementioned rising signal UP as the detection signal. If the current signal on the first signal pin P1 is a signal with the aforementioned second potential, the indication signal detection circuit 144 may generate a signal similar or identical to the aforementioned falling signal DN as the detection signal.
控制信号产生电路145耦接于对齐信号产生电路143、指示信号侦测电路144、以及第一开关阵列130a，设置成在受到前述的对齐信号触发时，依据指示信号侦测电路144当时输出的侦测信号产生多个控制信号，以分别控制第一开关阵列130a的多个开关元件131～135的切换运作。The control signal generation circuit 145 is coupled to the alignment signal generation circuit 143, the indication signal detection circuit 144, and the first switch array 130a, and is configured to be output by the indication signal detection circuit 144 when triggered by the aforementioned alignment signal. The test signal generates a plurality of control signals to respectively control the switching operations of the plurality of switch elements 131-135 of the first switch array 130a.
在图1与图2的实施例中，第一LED阵列120a、第二LED阵列120b、及第三LED阵列120c具有相同的电路架构。第一开关阵列130a、第二开关阵列130b、及第三开关阵列130c具有相同的电路架构。第一驱动电路140a、第二驱动电路140b、及第三驱动电路140c具有相同的电路架构。例如，第二LED阵列120b也是耦接于整流信号HV，且包含串联的多个LED装置121～125以及位于第二LED阵列120b的电流路径上的多个节点S1～Sn。第二开关阵列130b也是耦接于整流信号HV，且包含串联的多个开关元件131～135。同样地，第二开关阵列130b的多个开关元件131～135分别耦接于第二LED阵列120b的多个节点S1～Sn，使得第二开关阵列130b的多个开关元件131～135分别并联于第二LED阵列120b的多个LED装置121～125。第二驱动电路140b则耦接于第二开关阵列130b，且设置成控制第二开关阵列130b的多个开关元件131～135的切换运作。In the embodiment of FIG. 1 and FIG. 2, the first LED array 120a, the second LED array 120b, and the third LED array 120c have the same circuit structure. The first switch array 130a, the second switch array 130b, and the third switch array 130c have the same circuit structure. The first driving circuit 140a, the second driving circuit 140b, and the third driving circuit 140c have the same circuit structure. For example, the second LED array 120b is also coupled to the rectified signal HV, and includes a plurality of LED devices 121-125 connected in series and a plurality of nodes S1-Sn on the current path of the second LED array 120b. The second switch array 130b is also coupled to the rectified signal HV, and includes a plurality of switch elements 131 - 135 connected in series. Similarly, the plurality of switch elements 131-135 of the second switch array 130b are respectively coupled to the plurality of nodes S1-Sn of the second LED array 120b, so that the plurality of switch elements 131-135 of the second switch array 130b are respectively connected in parallel to A plurality of LED devices 121-125 of the second LED array 120b. The second driving circuit 140b is coupled to the second switch array 130b and configured to control the switching operation of the plurality of switch elements 131 - 135 of the second switch array 130b.
在LED发光装置100中，第一LED阵列120a、第一开关阵列130a、以及第一驱动电路140a的组合构成了LED发光装置100中的第一套发光电路。第二LED阵列120b、第二开关阵列130b、以及第二驱动电路140b的组合构成了LED发光装置100中的第二套发光电路。第三LED阵列120c、第三开关阵列130c、以及第三驱动电路140c的组合则构成了LED发光装置100中的第三套发光电路。如图所示，前述的三套发光电路是并联的架构。请注意，前述LED发光装置100中的发光电路的套数只是举例说明，并非局限LED发光装置100的实际实施方式。In the LED lighting device 100 , the combination of the first LED array 120 a , the first switch array 130 a , and the first driving circuit 140 a constitutes a first set of lighting circuits in the LED lighting device 100 . The combination of the second LED array 120b, the second switch array 130b, and the second driving circuit 140b constitutes a second set of lighting circuits in the LED lighting device 100 . The combination of the third LED array 120c, the third switch array 130c, and the third driving circuit 140c constitutes a third set of lighting circuits in the LED lighting device 100 . As shown in the figure, the aforementioned three sets of light-emitting circuits are in a parallel structure. Please note that the number of sets of lighting circuits in the aforementioned LED lighting device 100 is just an example and does not limit the actual implementation of the LED lighting device 100 .
在图1与图2的实施例中，LED发光装置100中的所有驱动电路的第一信号引脚P1都耦接在一起。例如，第一驱动电路140a的第一信号引脚P1耦接于第二驱动电路140b的第一信号引脚P1，也同时耦接于第三驱动电路140c的第一信号引脚P1。在前述第一信号引脚P1的连接方式之下，LED发光装置100中最先打算调整对应开关阵列的切换时序的驱动电路，会将其指示信号产生电路142输出到其第一信号引脚P1上的指示信号，同时耦合到其他驱动电路的第一信号引脚P1上，以致使所有的驱动电路会同时调整所有开关阵列的切换时序。In the embodiment shown in FIG. 1 and FIG. 2 , the first signal pins P1 of all the driving circuits in the LED lighting device 100 are coupled together. For example, the first signal pin P1 of the first driving circuit 140a is coupled to the first signal pin P1 of the second driving circuit 140b, and is also coupled to the first signal pin P1 of the third driving circuit 140c. Under the aforementioned connection mode of the first signal pin P1, the driving circuit in the LED lighting device 100 that first intends to adjust the switching timing of the corresponding switch array will output its indication signal generating circuit 142 to its first signal pin P1 The indication signal on the circuit is coupled to the first signal pin P1 of other driving circuits at the same time, so that all the driving circuits will adjust the switching timing of all the switch arrays at the same time.
例如，当第一驱动电路140a的指示信号产生电路142将产生的指示信号输出到第一驱动电路140a的第一信号引脚P1的时间点，比其他驱动电路都要来得早时，代表第一驱动电路140a打算调整第一开关阵列130a的切换时序的时间点，早于其他驱动电路打算调整对应开关阵列的切换时序的时间点。此时，由于所有驱动电路的第一信号引脚P1都耦接在一起，所以第一驱动电路140a的指示信号产生电路142输出到第一驱动电路140a的第一信号引脚P1上的指示信号，会同时耦合到第二驱动电路140b的第一信号引脚P1上，也会同时耦合到第三驱动电路140c的第一信号引脚P1上。For example, when the indication signal generating circuit 142 of the first driving circuit 140a outputs the indication signal generated to the first signal pin P1 of the first driving circuit 140a earlier than other driving circuits, it represents the first The timing at which the driving circuit 140 a intends to adjust the switching timing of the first switch array 130 a is earlier than the timing at which other driving circuits intend to adjust the switching timing of the corresponding switch arrays. At this time, since the first signal pins P1 of all the driving circuits are coupled together, the indicating signal generating circuit 142 of the first driving circuit 140a outputs the indicating signal on the first signal pin P1 of the first driving circuit 140a , will be coupled to the first signal pin P1 of the second driving circuit 140b at the same time, and will be coupled to the first signal pin P1 of the third driving circuit 140c at the same time.
在此情况下，第二驱动电路140b及第三驱动电路140c两者中的对齐信号产生电路143及指示信号侦测电路144，都会依据第一驱动电路140a的指示信号产生电路142所产生的指示信号来运作，进而造成第一驱动电路140a、第二驱动电路140b、及第三驱动电路140c三者中的控制信号产生电路145会同步作动，致使第一驱动电路140a、第二驱动电路140b、与第三驱动电路140c会同时调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序。换言之，此时调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序的时间点，是由第一驱动电路140a所决定。In this case, the alignment signal generation circuit 143 and the indication signal detection circuit 144 in both the second drive circuit 140b and the third drive circuit 140c will be based on the indication generated by the indication signal generation circuit 142 of the first drive circuit 140a. signal to operate, and then cause the control signal generating circuit 145 in the first drive circuit 140a, the second drive circuit 140b, and the third drive circuit 140c to operate synchronously, so that the first drive circuit 140a, the second drive circuit 140b , and the third driving circuit 140c simultaneously adjust the switching timing of the first switch array 130a, the second switch array 130b, and the third switch array 130c. In other words, the timing for adjusting the switching timing of the first switch array 130 a , the second switch array 130 b , and the third switch array 130 c is determined by the first driving circuit 140 a.
又例如，当第二驱动电路140b的指示信号产生电路142将产生的指示信号输出到第二驱动电路140b的第一信号引脚P1的时间点，比其他驱动电路都要来得早时，代表第二驱动电路140b打算调整第二开关阵列130b的切换时序的时间点，早于其他驱动电路打算调整对应开关阵列的切换时序的时间点。此时，由于所有驱动电路的第一信号引脚P1都耦接在一起，所以第二驱动电路140b的指示信号产生电路142输出到第二驱动电路140b的第一信号引脚P1上的指示信号，会同时耦合到第一驱动电路140a的第一信号引脚P1上，也会同时耦合到第三驱动电路140c的第一信号引脚P1上。For another example, when the indication signal generating circuit 142 of the second driving circuit 140b outputs the indication signal generated to the first signal pin P1 of the second driving circuit 140b earlier than other driving circuits, it represents the first The time point at which the second driving circuit 140b intends to adjust the switching timing of the second switch array 130b is earlier than the time point at which the other driving circuits intend to adjust the switching timing of the corresponding switch array. At this time, since the first signal pins P1 of all the driving circuits are coupled together, the indicating signal generating circuit 142 of the second driving circuit 140b outputs the indicating signal on the first signal pin P1 of the second driving circuit 140b , will be coupled to the first signal pin P1 of the first driving circuit 140a at the same time, and will be coupled to the first signal pin P1 of the third driving circuit 140c at the same time.
在此情况下，第一驱动电路140a及第三驱动电路140c两者中的对齐信号产生电路143及指示信号侦测电路144，都会依据第二驱动电路140b的指示信号产生电路142所产生的指示信号来运作，进而造成第一驱动电路140a、第二驱动电路140b、及第三驱动电路140c三者中的控制信号产生电路145会同步作动，致使第一驱动电路140a、第二驱动电路140b、与第三驱动电路140c会同时调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序。换言之，此时调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序的时间点，是由第二驱动电路140b所决定。In this case, the alignment signal generation circuit 143 and the indication signal detection circuit 144 in both the first drive circuit 140a and the third drive circuit 140c will be based on the indication generated by the indication signal generation circuit 142 of the second drive circuit 140b. signal to operate, and then cause the control signal generating circuit 145 in the first drive circuit 140a, the second drive circuit 140b, and the third drive circuit 140c to operate synchronously, so that the first drive circuit 140a, the second drive circuit 140b , and the third driving circuit 140c simultaneously adjust the switching timing of the first switch array 130a, the second switch array 130b, and the third switch array 130c. In other words, the timing for adjusting the switching timing of the first switch array 130 a , the second switch array 130 b , and the third switch array 130 c is determined by the second driving circuit 140 b.
由前述说明可知，在LED发光装置100中，任何一个驱动电路都有机会成为决定所有开关阵列的切换时序的驱动电路。It can be seen from the foregoing description that in the LED lighting device 100 , any driving circuit has a chance to be the driving circuit that determines the switching timing of all the switch arrays.
由于LED发光装置100中的多个驱动电路(例如，驱动电路140a、140b、与140c)，会在同一时间调整多个开关阵列(例如，开关阵列130a、130b、与130c)的切换时序，使得并联的多个LED阵列(例如，LED阵列120a、120b、与120c)的操作态样会在同一时间点被切换。如此一来，便可有效避免切换时序不匹配(switching timing mismatch)的问题发生，进而提升LED发光装置100的发光效能和整体能源使用效率。Due to the multiple driving circuits (for example, driving circuits 140a, 140b, and 140c) in the LED lighting device 100, the switching timings of multiple switch arrays (for example, switch arrays 130a, 130b, and 130c) will be adjusted at the same time, so that The operation modes of multiple LED arrays connected in parallel (for example, the LED arrays 120a, 120b, and 120c) are switched at the same time point. In this way, the problem of switching timing mismatch can be effectively avoided, thereby improving the luminous efficacy and overall energy efficiency of the LED lighting device 100 .
在前述的LED发光装置100，各驱动电路中的判断电路141的输入信号是整流器110所输出的整流信号HV，但这只是一实施例，而非局限判断电路141的实际实施方式。In the aforementioned LED lighting device 100 , the input signal of the judging circuit 141 in each driving circuit is the rectified signal HV output by the rectifier 110 , but this is only an example and not intended to limit the actual implementation of the judging circuit 141 .
例如，图3为本发明一第二实施例的LED发光装置300简化后的功能方块图。在LED发光装置300中，各驱动电路中的判断电路141的输入信号是由对应的开关阵列的多个节点S1～Sn的其中之一所提供的信号。例如，第一驱动电路140a中的判断电路141的输入信号SXa，是由第一开关阵列130a的多个节点S1～Sn的其中之一所提供的信号(例如，节点S3或S4所提供的信号)，第二驱动电路140b中的判断电路141的输入信号SXb，是由第二开关阵列130b的多个节点S1～Sn的其中之一所提供的信号(例如，节点S3或S4所提供的信号)，其余依此类推。For example, FIG. 3 is a simplified functional block diagram of an LED lighting device 300 according to a second embodiment of the present invention. In the LED lighting device 300, the input signal of the judgment circuit 141 in each driving circuit is a signal provided by one of the plurality of nodes S1-Sn of the corresponding switch array. For example, the input signal SXa of the judgment circuit 141 in the first driving circuit 140a is a signal provided by one of the multiple nodes S1˜Sn of the first switch array 130a (for example, the signal provided by the node S3 or S4 ), the input signal SXb of the judgment circuit 141 in the second drive circuit 140b is the signal provided by one of the multiple nodes S1-Sn of the second switch array 130b (for example, the signal provided by the node S3 or S4 ), and so on for the rest.
有关前述LED发光装置100中的其他元件的实施方式、运作方式、及相关优点的说明，亦适用于LED发光装置300中的对应元件，为简明起见，在此不重复叙述。The descriptions about the implementation, operation, and related advantages of other components in the aforementioned LED lighting device 100 are also applicable to the corresponding components in the LED lighting device 300 , and are not repeated here for the sake of brevity.
图4与图5为本发明一第三实施例的LED发光装置400简化后的功能方块图。与前述的LED发光装置100类似，LED发光装置400包含有整流器110、多个并联的LED阵列、多个并联的开关阵列、以及多个并联的驱动电路。为了方便说明起见，在图4与图5中同样仅绘示第一LED阵列120a、第二LED阵列120b、第三LED阵列120c、第一开关阵列130a、第二开关阵列130b、第三开关阵列130c、一第一驱动电路440a、一第二驱动电路440b、以及一第三驱动电路440c为例。4 and 5 are simplified functional block diagrams of an LED lighting device 400 according to a third embodiment of the present invention. Similar to the aforementioned LED lighting device 100 , the LED lighting device 400 includes a rectifier 110 , multiple parallel-connected LED arrays, multiple parallel-connected switch arrays, and multiple parallel-connected drive circuits. For convenience of description, only the first LED array 120a, the second LED array 120b, the third LED array 120c, the first switch array 130a, the second switch array 130b, and the third switch array are shown in FIG. 4 and FIG. 130c, a first driving circuit 440a, a second driving circuit 440b, and a third driving circuit 440c as an example.
LED发光装置400中的整流器110、第一LED阵列120a、第二LED阵列120b、第三LED阵列120c、第一开关阵列130a、第二开关阵列130b、及第三开关阵列130c的实施方式及连接关系，都与前述LED发光装置100中的对应元件相同，为简明起见，在此不重复叙述。Implementation and connection of the rectifier 110, the first LED array 120a, the second LED array 120b, the third LED array 120c, the first switch array 130a, the second switch array 130b, and the third switch array 130c in the LED lighting device 400 The relationship is the same as that of the corresponding elements in the aforementioned LED lighting device 100 , and for the sake of brevity, the description is not repeated here.
如图4所示，第一驱动电路440a同样包含有第一信号引脚P1、判断电路141、指示信号产生电路142、对齐信号产生电路143、指示信号侦测电路144、以及控制信号产生电路145。第一驱动电路440a与前述的第一驱动电路140a的差异，主要在于第一驱动电路440a还额外包含一第二信号引脚P2，且第一驱动电路440a中的指示信号产生电路142的连接关系，与前述第一驱动电路140a中的指示信号产生电路142的连接关系有所不同。As shown in FIG. 4, the first driving circuit 440a also includes a first signal pin P1, a judging circuit 141, an indication signal generation circuit 142, an alignment signal generation circuit 143, an indication signal detection circuit 144, and a control signal generation circuit 145. . The difference between the first driving circuit 440a and the aforementioned first driving circuit 140a mainly lies in that the first driving circuit 440a additionally includes a second signal pin P2, and the connection relationship of the indicating signal generating circuit 142 in the first driving circuit 440a , which is different from the connection relationship of the indication signal generating circuit 142 in the aforementioned first driving circuit 140a.
在第一驱动电路440a中，指示信号产生电路142耦接于判断电路141与第二信号引脚P2，设置成依据判断电路141的判断结果输出一指示信号至第二信号引脚P2。例如，当指示信号产生电路142接收到判断电路141的判断结果时，可在经过一段预定延迟时间后，输出一相对应的指示信号至第二信号引脚P2。例如，当指示信号产生电路142接收到前述的上升信号UP时，可在经过一段预定延迟时间之后输出具有一第一电位的指示信号至第二信号引脚P2，而当指示信号产生电路142接收到前述的下降信号DN时，可在经过一段预定延迟时间之后输出具有一相异的第二电位的指示信号至第二信号引脚P2。In the first driving circuit 440a, the indication signal generating circuit 142 is coupled to the judgment circuit 141 and the second signal pin P2, and is configured to output an indication signal to the second signal pin P2 according to the judgment result of the judgment circuit 141. For example, when the indication signal generating circuit 142 receives the determination result of the determination circuit 141 , it may output a corresponding indication signal to the second signal pin P2 after a predetermined delay time. For example, when the indication signal generation circuit 142 receives the aforementioned rising signal UP, it can output an indication signal with a first potential to the second signal pin P2 after a predetermined delay time, and when the indication signal generation circuit 142 receives the When the aforementioned falling signal DN is reached, an indication signal with a different second potential can be output to the second signal pin P2 after a predetermined delay time.
换言之，指示信号产生电路142输出至第二信号引脚P2上的指示信号，会反应出第一驱动电路440a中的判断电路141的判断结果。In other words, the indication signal output from the indication signal generation circuit 142 to the second signal pin P2 will reflect the judgment result of the judgment circuit 141 in the first driving circuit 440a.
在第一驱动电路440a中，指示信号产生电路142将指示信号输出到第二信号引脚P2的时间点，代表着第一驱动电路440a打算(intend to)调整第一开关阵列130a中的多个开关元件131～135的切换时序的时间点。In the first drive circuit 440a, the point in time when the indication signal generating circuit 142 outputs the indication signal to the second signal pin P2 represents that the first drive circuit 440a intends to adjust a plurality of switches in the first switch array 130a. Timings of switching timing of the switching elements 131 to 135 .
第一驱动电路440a中的对齐信号产生电路143、指示信号侦测电路144、以及控制信号产生电路145的实施方式及连接关系，都与前述第一驱动电路140a中的对应元件相同，为简明起见，在此不重复叙述。The implementation and connection relationship of the alignment signal generation circuit 143, the indicator signal detection circuit 144, and the control signal generation circuit 145 in the first driving circuit 440a are the same as the corresponding elements in the first driving circuit 140a, for the sake of brevity. , which will not be repeated here.
在LED发光装置400中，第一驱动电路440a、第二驱动电路440b、及第三驱动电路440c具有相同的电路架构。此外，第一LED阵列120a、第一开关阵列130a、以及第一驱动电路440a的组合构成了LED发光装置400中的第一套发光电路。第二LED阵列120b、第二开关阵列130b、以及第二驱动电路440b的组合构成了LED发光装置400中的第二套发光电路。第三LED阵列120c、第三开关阵列130c、以及第三驱动电路440c的组合则构成了LED发光装置400中的第三套发光电路。如图所示，前述的三套发光电路是并联的架构。请注意，前述LED发光装置400中的发光电路的套数只是举例说明，并非局限LED发光装置400的实际实施方式。In the LED lighting device 400, the first driving circuit 440a, the second driving circuit 440b, and the third driving circuit 440c have the same circuit structure. In addition, the combination of the first LED array 120 a , the first switch array 130 a , and the first driving circuit 440 a constitutes a first set of lighting circuits in the LED lighting device 400 . The combination of the second LED array 120b, the second switch array 130b, and the second driving circuit 440b constitutes a second set of lighting circuits in the LED lighting device 400 . The combination of the third LED array 120c, the third switch array 130c, and the third driving circuit 440c constitutes a third set of lighting circuits in the LED lighting device 400 . As shown in the figure, the aforementioned three sets of light-emitting circuits are in a parallel structure. Please note that the number of sets of lighting circuits in the aforementioned LED lighting device 400 is just an example and does not limit the actual implementation of the LED lighting device 400 .
LED发光装置400中的所有驱动电路的第一信号引脚P1都耦接在一起，但只有第一驱动电路440a还会把自己的第一信号引脚P1与第二信号引脚P2耦接在一起，其余的驱动电路都不会把自己的第一信号引脚P1与第二信号引脚P2相耦接。The first signal pins P1 of all the driving circuits in the LED lighting device 400 are coupled together, but only the first driving circuit 440a also couples its first signal pin P1 and the second signal pin P2 to the At the same time, the rest of the driving circuits will not couple their first signal pin P1 to the second signal pin P2.
例如，在图4与图5的实施例中，第一驱动电路440a的第一信号引脚P1与第二信号引脚P2，都耦接于第二驱动电路440b的第一信号引脚P1及第三驱动电路440c的第一信号引脚P1，但不与第二驱动电路440b的第二信号引脚P2相耦接，也不与第三驱动电路440c的第二信号引脚P2相耦接。For example, in the embodiment shown in FIG. 4 and FIG. 5, the first signal pin P1 and the second signal pin P2 of the first driving circuit 440a are both coupled to the first signal pin P1 and the second signal pin P2 of the second driving circuit 440b. The first signal pin P1 of the third driving circuit 440c is not coupled to the second signal pin P2 of the second driving circuit 440b, nor is it coupled to the second signal pin P2 of the third driving circuit 440c .
在前述的信号引脚连接方式之下，只有第一驱动电路440a会将其指示信号产生电路142输出到其第二信号引脚P2上的指示信号，同时耦合到自己的第一信号引脚P1以及其他驱动电路的第一信号引脚P1上，以致使所有的驱动电路会同时调整所有开关阵列的切换时序。Under the aforementioned signal pin connection mode, only the first drive circuit 440a will output the indication signal from its indication signal generating circuit 142 to its second signal pin P2, and at the same time couple it to its own first signal pin P1 and the first signal pin P1 of other driving circuits, so that all driving circuits can simultaneously adjust the switching timing of all switch arrays.
如前所述，指示信号产生电路142将指示信号输出到第二信号引脚P2的时间点，代表着第一驱动电路440a打算调整第一开关阵列130a中的多个开关元件131～135的切换时序的时间点。此时，由于第一驱动电路440a的第二信号引脚P2与所有驱动电路的第一信号引脚P1都耦接在一起，所以第一驱动电路440a的指示信号产生电路142输出到第一驱动电路440a的第二信号引脚P2上的指示信号，会同时耦合到第二驱动电路440b的第一信号引脚P1上，也会同时耦合到第三驱动电路440c的第一信号引脚P1上。As mentioned above, the time point when the indication signal generating circuit 142 outputs the indication signal to the second signal pin P2 represents that the first drive circuit 440a intends to adjust the switching of the plurality of switching elements 131-135 in the first switch array 130a. Time point in time series. At this time, since the second signal pin P2 of the first driving circuit 440a is coupled to the first signal pins P1 of all driving circuits, the indication signal generating circuit 142 of the first driving circuit 440a outputs to the first driving circuit 440a. The indication signal on the second signal pin P2 of the circuit 440a will be coupled to the first signal pin P1 of the second driving circuit 440b at the same time, and will also be coupled to the first signal pin P1 of the third driving circuit 440c at the same time .
在此情况下，第二驱动电路440b及第三驱动电路440c两者中的对齐信号产生电路143及指示信号侦测电路144，都会依据第一驱动电路440a的指示信号产生电路142所产生的指示信号来运作，进而造成第一驱动电路440a、第二驱动电路440b、及第三驱动电路440c三者中的控制信号产生电路145会同步作动，致使第一驱动电路440a、第二驱动电路440b、与第三驱动电路440c会同时调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序。换言之，调整第一开关阵列130a、第二开关阵列130b、与第三开关阵列130c的切换时序的时间点，都只会由第一驱动电路440a所决定。In this case, the alignment signal generation circuit 143 and the indication signal detection circuit 144 in both the second drive circuit 440b and the third drive circuit 440c will be based on the indication generated by the indication signal generation circuit 142 of the first drive circuit 440a signal to operate, thereby causing the control signal generating circuit 145 in the first drive circuit 440a, the second drive circuit 440b, and the third drive circuit 440c to operate synchronously, so that the first drive circuit 440a, the second drive circuit 440b , and the third driving circuit 440c simultaneously adjust the switching timing of the first switch array 130a, the second switch array 130b, and the third switch array 130c. In other words, the timing for adjusting the switching timing of the first switch array 130a, the second switch array 130b, and the third switch array 130c is only determined by the first driving circuit 440a.
由前述说明可知，在LED发光装置400中，只有第一驱动电路440a具有所有开关阵列的切换时序决定权，其他的驱动电路都只能依据第一驱动电路440a的指示来操作。It can be seen from the foregoing description that in the LED lighting device 400, only the first driving circuit 440a has the right to determine the switching timing of all switch arrays, and other driving circuits can only operate according to the instructions of the first driving circuit 440a.
由于LED发光装置400中的多个驱动电路(例如，驱动电路440a、440b、与440c)，会在同一时间调整多个开关阵列(例如，开关阵列130a、130b、与130c)的切换时序，使得并联的多个LED阵列(例如，LED阵列120a、120b、与120c)的操作态样会在同一时间点被切换。如此一来，便可有效避免切换时序不匹配(switching timing mismatch)的问题发生，进而提升LED发光装置400的发光效能和整体能源使用效率。Due to the multiple driving circuits (for example, driving circuits 440a, 440b, and 440c) in the LED lighting device 400, the switching timings of multiple switch arrays (for example, switch arrays 130a, 130b, and 130c) will be adjusted at the same time, so that The operation modes of multiple LED arrays connected in parallel (for example, the LED arrays 120a, 120b, and 120c) are switched at the same time point. In this way, the problem of switching timing mismatch can be effectively avoided, thereby improving the luminous efficacy and overall energy efficiency of the LED lighting device 400 .
另外，LED发光装置400的制造商可以依据实际电路环境的特性，将具有所有开关阵列的切换时序决定权的驱动电路(例如，前述的第一驱动电路440a)设置在最适当的位置，以提升整体系统的可靠度。In addition, the manufacturer of the LED lighting device 400 can set the driving circuit (for example, the aforementioned first driving circuit 440a) at the most appropriate position with the right to determine the switching timing of all switch arrays according to the characteristics of the actual circuit environment, so as to improve overall system reliability.
在前述的LED发光装置400，各驱动电路中的判断电路141的输入信号是整流器110所输出的整流信号HV，但这只是一实施例，而非局限判断电路141的实际实施方式。In the aforementioned LED lighting device 400 , the input signal of the judging circuit 141 in each driving circuit is the rectified signal HV output by the rectifier 110 , but this is just an example and not limited to the actual implementation of the judging circuit 141 .
例如，图6为本发明一第四实施例的LED发光装置600简化后的功能方块图。在LED发光装置600中，各驱动电路中的判断电路141的输入信号是由对应的开关阵列的多个节点S1～Sn的其中之一所提供的信号。例如，第一驱动电路440a中的判断电路141的输入信号SXa，是由第一开关阵列130a的多个节点S1～Sn的其中之一所提供的信号(例如，节点S3或S4所提供的信号)，第二驱动电路440b中的判断电路141的输入信号SXb，是由第二开关阵列130b的多个节点S1～Sn的其中之一所提供的信号(例如，节点S3或S4所提供的信号)，其余依此类推。For example, FIG. 6 is a simplified functional block diagram of an LED lighting device 600 according to a fourth embodiment of the present invention. In the LED lighting device 600, the input signal of the judgment circuit 141 in each driving circuit is a signal provided by one of the plurality of nodes S1-Sn of the corresponding switch array. For example, the input signal SXa of the judgment circuit 141 in the first driving circuit 440a is a signal provided by one of the multiple nodes S1-Sn of the first switch array 130a (for example, the signal provided by the node S3 or S4 ), the input signal SXb of the judgment circuit 141 in the second drive circuit 440b is the signal provided by one of the multiple nodes S1-Sn of the second switch array 130b (for example, the signal provided by the node S3 or S4 ), and so on for the rest.
有关前述LED发光装置400中的其他元件的实施方式、运作方式、及相关优点的说明，亦适用于LED发光装置600中的对应元件，为简明起见，在此不重复叙述。The descriptions about the implementation, operation, and related advantages of other components in the aforementioned LED lighting device 400 are also applicable to the corresponding components in the LED lighting device 600 , and are not repeated here for the sake of brevity.
前述LED发光装置100、300、400、或600中的不同功能方块可分别用不同的电路来实现，也可整合在一单一电路芯片中。例如，第一驱动电路140a或440a中的所有功能方块可以整合在一单一电路芯片中，也可以进一步将第一开关阵列130a整合到第一驱动电路140a或440a中，以形成一单一电路芯片。同样地，也可以将第二开关阵列130b整合到第二驱动电路140b或440b中，以形成一单一电路芯片。Different functional blocks in the aforementioned LED lighting device 100 , 300 , 400 , or 600 can be realized by different circuits, or can be integrated into a single circuit chip. For example, all functional blocks in the first driving circuit 140a or 440a can be integrated into a single circuit chip, and the first switch array 130a can be further integrated into the first driving circuit 140a or 440a to form a single circuit chip. Likewise, the second switch array 130b can also be integrated into the second driving circuit 140b or 440b to form a single circuit chip.
在说明书及权利要求书中使用了某些词汇来指称特定的元件。然而，所属技术领域的技术人员应可理解，同样的元件可能会用不同的名词来称呼。说明书及权利要求书并不以名称的差异作为区分元件的方式，而是以元件在功能上的差异来作为区分的基准。在说明书及权利要求书所提及的「包含」为开放式的用语，故应解释成「包含但不限定于」。另外，「耦接」在此包含任何直接及间接的连接手段。因此，若文中描述第一元件耦接于第二元件，则代表第一元件可通过电性连接或无线传输、光学传输等信号连接方式而直接地连接于第二元件，或者通过其他元件或连接手段间接地电性或信号连接至该第二元件。Certain terms are used in the description and claims to refer to particular elements. However, those skilled in the art should understand that the same element may be called by different terms. The specification and claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for distinction. The "comprising" mentioned in the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, "coupling" here includes any direct and indirect connection means. Therefore, if it is described that the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection or signal connection means such as wireless transmission or optical transmission, or through other elements or connections. The means are indirectly electrically or signally connected to the second element.
在此所使用的「及/或」的描述方式，包含所列举的其中之一或多个项目的任意组合。另外，除非说明书中特别指明，否则任何单数格的用语都同时包含复数格的涵义。The description of "and/or" used herein includes any combination of one or more of the listed items. In addition, unless otherwise specified in the specification, any singular term also includes plural meanings.
以上仅为本发明的较佳实施例，凡依本发明权利要求所做的均等变化与修饰，皆应属本发明的涵盖范围。The above are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298882.9ACN106304526A (en) | 2015-06-03 | 2015-06-03 | LED light-emitting device and related driving circuit |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298882.9ACN106304526A (en) | 2015-06-03 | 2015-06-03 | LED light-emitting device and related driving circuit |
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| CN106304526Atrue CN106304526A (en) | 2017-01-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510298882.9APendingCN106304526A (en) | 2015-06-03 | 2015-06-03 | LED light-emitting device and related driving circuit |
| Country | Link |
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| CN (1) | CN106304526A (en) |
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| CN102647826A (en)* | 2011-02-18 | 2012-08-22 | 美格纳半导体有限公司 | PWM control circuit and LED drive circuit using this circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20170104 |