Utility model content
In view of the shortcoming of prior art, the purpose of this utility model is the power supply adaptor providing a kind of versatility high.
The utility model discloses a kind of power supply adaptor, for providing charging voltage to terminal equipment, it is characterized in that, described power supply adaptor comprises input rectifying filter circuit, voltage conversion circuit, the first charging voltage output circuit and the second charging voltage output circuit; Described input rectifying filter circuit is used for alternating voltage to be converted to the first direct voltage; Described voltage conversion circuit is connected with described input rectifying filter circuit, for described first direct voltage is converted to the second direct voltage; Described first charging voltage output circuit is connected with described voltage conversion circuit, for exporting common charging voltage to described terminal equipment, and by identifying that the charge protocol of described terminal equipment exports corresponding charging current; Described second charging voltage output circuit is connected with described voltage conversion circuit, fills standard soon, be depressed into described terminal equipment to export corresponding charging quickly for what identify described terminal equipment.
Preferably, described power supply adaptor also comprises input anti-jamming circuit, output rectifier and filter and feedback circuit; Described input anti-jamming circuit is connected with the input of described input rectifying filter circuit; Described output rectifier and filter is connected with the output of described voltage conversion circuit, for carrying out rectification and filtering process to described second direct voltage; Described feedback circuit is connected with described voltage conversion circuit and described output rectifier and filter, for the second direct voltage after sampling processing to control the output of described voltage conversion circuit.
Preferably, described input anti-jamming circuit comprises fuse, the first electric capacity, the first resistance, the second resistance, the first inductance and the 3rd resistance; The first end of described fuse is connected with the first end of described first resistance by the second end of described fuse; Second end of described first resistance is connected by the first end of described second resistance with described first electric capacity, and the second end of described first electric capacity is connected with the first end of described first resistance; The first end of described first inductance is connected with the first end of described first resistance, second end of described first inductance is connected with the first end of described first electric capacity, 3rd end of described first inductance is connected with the first end of described 3rd resistance, and the 4th end of described first inductance is connected with the second end of described 3rd resistance.
Preferably, described input rectifying filter circuit comprises bridge rectifier, the second electric capacity, the second inductance, the 3rd electric capacity; The first end of described bridge rectifier is connected with the first end of described second electric capacity, second end of described bridge rectifier is connected with the second end of described 3rd resistance, 3rd end of described bridge rectifier is connected with the first end of described 3rd resistance, and the 4th end of described bridge rectifier is connected with the second end of described second electric capacity; The first end of described second inductance is connected with the 4th end of described bridge rectifier, and the second end of described second inductance is connected with the first end of described bridge rectifier by described 3rd electric capacity.
Preferably, described voltage conversion circuit comprises transformer, and described transformer comprises first end, the second end, the 3rd end, the 4th end, five terminal and the 6th end, the 3rd end ground connection of described transformer.
Preferably, described feedback circuit comprises optical coupler, power management chip, the first switch element; First path terminal of described first switch element is connected with the 6th end of described transformer, and the alternate path end of described first switch element passes through grounding through resistance; The voltage input end of described power management chip receives described first direct voltage by the 4th resistance, the 5th resistance, the 6th resistance, and the output of described power management chip is connected with the third path end of described first switch element; The first end of described optical coupler is connected with the output of described output rectification filter unit, to receive the second direct voltage after described process, second end ground connection of described optical coupler, 3rd end ground connection of described optical coupler, the 4th end of described optical coupler is connected with the feedback end of described power management chip.
Preferably, described power management chip is CX7170 chip.
Preferably, described first charging voltage output circuit comprises the first synchronous rectification step-down chip and usb protocol chip; Described first synchronous rectification step-down chip is used for described second direct voltage to be converted to the 3rd direct voltage; Described usb protocol chip receives described 3rd direct voltage, to export common charging voltage to described terminal equipment, and by identifying that the charge protocol of described terminal equipment exports corresponding charging current.
Preferably, described second charging voltage output circuit comprises the second synchronous rectification step-down chip, fills protocol identification chip soon; Describedly fill protocol identification chip soon for what identify described terminal equipment and fill standard soon, export corresponding charging quickly pressure to control described second synchronous rectification step-down chip.
Preferably, the second synchronous rectification step-down chip is CX8517 chip, and the described protocol identification chip that fills soon is CX7811 chip.
Power supply adaptor of the present utility model can according to the rechargeable standard of terminal equipment, and export corresponding charging voltage, versatility is high.
Embodiment
Fig. 1 is the modular structure schematic diagram of the power supply adaptor of the utility model one execution mode.As shown in Figure 1, a kind of power supply adaptor is used for providing charging voltage to terminal equipment, and power supply adaptor comprises input rectifying filter circuit 200, voltage conversion circuit 400, first charging voltage output circuit 600 and the second charging voltage output circuit 700.
Wherein, input rectifying filter circuit 200 is for being converted to the first direct voltage by the alternating voltage of reception.
Voltage conversion circuit 400 is connected with input rectifying filter circuit 200, for the first direct voltage is converted to the second direct voltage.
First charging voltage output circuit 600 is connected with voltage conversion circuit 400, for exporting common charging voltage to terminal equipment, and exports corresponding charging current by the charge protocol of identification terminal equipment (not shown in figure 1).
Second charging voltage output circuit 700 is connected with voltage conversion circuit 400, fills standard soon for identification terminal equipment, is depressed into terminal equipment to export corresponding charging quickly.
In the utility model one execution mode, power supply adaptor can also but be not limited to also to comprise input anti-jamming circuit 100, feedback circuit 300 and output rectifier and filter 500.
Wherein, input anti-jamming circuit 100 to be connected with the input of input rectifying filter circuit 200.
Output rectifier and filter 500 is connected with the output of voltage conversion circuit 400, for carrying out rectification and filtering process to the second direct voltage.
Feedback circuit 300 is connected with voltage conversion circuit 400 and output rectifier and filter 500, for the second direct voltage after sampling processing with the output of control voltage translation circuit 400.
In the utility model one execution mode, feedback circuit 300 can also but be not limited to be connected with the output of input rectifying filter circuit 200, to receive the second direct voltage after process as starting resistor.
Fig. 2 is the input nonlinearities circuit of the utility model one execution mode and the electrical block diagram of input rectifying filter circuit.
Wherein, input anti-jamming circuit and comprise fuse F1, the first electric capacity C1, the first resistance C1, the second resistance R2, the first inductance L 1 and the 3rd resistance R3.
Particularly, the first end of fuse F1 is connected with the first end of the first resistance R1 by second end of fuse F1.Second end of the first resistance R1 is connected with the first end of the first electric capacity by the second resistance R2, and the second end of the first electric capacity is connected with the first end of the first resistance R1.The first end of the first inductance L 1 is connected with the first end of the first resistance R1, second end of the first inductance L 1 is connected with the first end of the first electric capacity, 3rd end of the first inductance L 1 is connected with the first end of the 3rd resistance R3, and the 4th end of the first inductance L 1 is connected with second end of the 3rd resistance R3.
Wherein, input rectifying filter circuit comprises bridge rectifier D S1, the second electric capacity C2, the second inductance L 2, the 3rd electric capacity C3.
Particularly, the first end of bridge rectifier D S1 is connected with the first end of the second electric capacity C2, second end of bridge rectifier D S1 is connected with second end of the 3rd resistance R3,3rd end of bridge rectifier D S1 is connected with the first end of the 3rd resistance R3, and the 4th end of bridge rectifier D S1 is connected with second end of the second electric capacity C2.The first end of the second inductance L 2 is connected with the 4th end of bridge rectifier D S1, and the second end of the second inductance L 2 is connected with the first end of bridge rectifier D S1 by the 3rd electric capacity C3.
Fig. 3 is the voltage conversion circuit of the utility model one execution mode, the electrical block diagram of feedback circuit.Please also refer to Fig. 1, Fig. 2, Fig. 3.
Wherein, voltage conversion circuit comprises transformer BT1, and transformer BT1 comprises first end, the second end, the 3rd end, the 4th end, five terminal and the 6th end, the 3rd end ground connection of transformer BT1.
Wherein, feedback circuit comprises optical coupler U2, power management chip U1, the first switch element Q1.
Particularly, first path terminal of the first switch element Q1 is connected with the 6th end of transformer BT1, and the alternate path end of the first switch element Q1 passes through grounding through resistance.The voltage input end of power management chip U1 receives the first direct voltage by the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, and the output of power management chip U1 is connected with the third path end of the first switch element Q1.The first end of optical coupler U2 is connected with the output of output rectification filter unit, to receive the direct voltage of the second direct voltage such as 15V after process, the second end ground connection of optical coupler U2, the 3rd end ground connection of optical coupler U2, the 4th end of optical coupler U2 is connected with the feedback end FB of power management chip U1.
In an execution mode of the present utility model, voltage conversion circuit also comprises the first peripheral circuit be made up of the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the 4th electric capacity C4, the first diode D1, the second diode D2.Feedback circuit also comprises the second peripheral circuit be made up of to the 20 resistance R10 ~ R20 the 3rd diode D3, the first Zener diode DZ1, ambipolar linear chip U3, the 5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C7, the 8th electric capacity C8, the tenth resistance.
Wherein, power management chip U1 can be, but not limited to as CX7170 chip, its U2 of optical coupling can be, but not limited to as PCB17 chip.
Fig. 4 is the electrical block diagram of the output rectifier and filter of the utility model one execution mode.Please also refer to Fig. 1, Fig. 3 and Fig. 4, output rectifier and filter comprises with regard to nine electric capacity to the 12 electric capacity R9 ~ R12, the 21 resistance R21, the 3rd inductance L 3 and the 4th diode D4.Output rectifier and filter is used for being connected with the output of voltage conversion circuit, processes, with the direct voltage of output example as 15V for the second direct voltage exported voltage conversion circuit.
Fig. 5 is the electrical block diagram of the first charging voltage output circuit of the utility model one execution mode.Please also refer to Fig. 1 and Fig. 5, the first charging voltage output circuit comprises the first synchronous rectification step-down chip U4 and usb protocol chip U6.
It is such as the direct voltage of 5V that the second direct voltage after first synchronous rectification step-down chip U4 is used for the process exported by output rectifier and filter is converted to the 3rd direct voltage.
Usb protocol chip U6 receives the 3rd direct voltage, to export the voltage of common charging voltage such as 5V to terminal equipment, and exported electric current to the first connector USB2 of corresponding charging current such as 500MA, 1000MA, 2.1A by the charge protocol of identification terminal equipment, thus export terminal equipment to.
Particularly, the first synchronous rectification step-down chip U4 can be, but not limited to as CX8517 chip, and usb protocol chip U6 can be, but not limited to as CW3002DAAS chip.
Wherein, the first charging voltage output circuit also comprises the 3rd peripheral circuit be made up of to the 18 electric capacity C13 ~ C18, the 22 resistance to the 28 resistance R22 ~ R28, the 5th diode D5, the 6th diode D6, the 4th inductance L 4 and the first coil B1 the 13 electric capacity.
Fig. 6 is the electrical block diagram of the second charging voltage output circuit of the utility model one execution mode.As shown in Figure 6, the second charging voltage output circuit comprises the second synchronous rectification step-down chip U5, fills protocol identification chip U7 soon.
Fill protocol identification chip U7 soon and fill standard soon for identification terminal equipment, the charging quickly exporting corresponding charging quickly pressure such as 5V/9V/12V to control the second synchronous rectification step-down chip U5 is depressed into the second connector USB1, thus exports terminal equipment to.
Particularly, the second synchronous rectification step-down chip can be, but not limited to as CX8517 chip, fills protocol identification chip soon and can be, but not limited to as CX7811 chip.
Wherein, the second charging voltage output circuit also comprises the 4th peripheral circuit be made up of to the 40 resistance R29 ~ R40, the 19 electric capacity to the 20 electric capacity C19 ~ C26, the 7th diode D7, the 5th inductance L 5, second coil B2 the 29 resistance.
Power supply adaptor of the present utility model can according to the rechargeable standard of terminal equipment, and export corresponding charging voltage, versatility is high.
Should be understood that, the above-mentioned statement for the utility model preferred embodiment is comparatively detailed, and therefore can not think the restriction to the utility model scope of patent protection, scope of patent protection of the present utility model should be as the criterion with claims.