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PH12017500476B1 - Constant on-time (cot) control in isolated converter - Google Patents

Constant on-time (cot) control in isolated converter

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Publication number
PH12017500476B1
PH12017500476B1PH12017500476APH12017500476APH12017500476B1PH 12017500476 B1PH12017500476 B1PH 12017500476B1PH 12017500476 APH12017500476 APH 12017500476APH 12017500476 APH12017500476 APH 12017500476APH 12017500476 B1PH12017500476 B1PH 12017500476B1
Authority
PH
Philippines
Prior art keywords
electronic switch
control signal
constant
processor
primary side
Prior art date
Application number
PH12017500476A
Other versions
PH12017500476A1 (en
Inventor
Tien-Chi Lin
Chih-Yuan Liu
Yueh-Ping Yu
Pei-Lun Huang
Original Assignee
Alpha & Omega Semiconductor Cayman Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/562,735external-prioritypatent/US9577543B2/en
Application filed by Alpha & Omega Semiconductor Cayman LtdfiledCriticalAlpha & Omega Semiconductor Cayman Ltd
Publication of PH12017500476A1publicationCriticalpatent/PH12017500476A1/en
Publication of PH12017500476B1publicationCriticalpatent/PH12017500476B1/en

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Abstract

The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response.
PH12017500476A2014-09-192017-03-13Constant on-time (cot) control in isolated converterPH12017500476B1 (en)

Applications Claiming Priority (3)

Application NumberPriority DateFiling DateTitle
CN201410483711.9ACN105490567B (en)2014-09-192014-09-19Fixed ON time suitching type conversion equipment
US14/562,735US9577543B2 (en)2014-09-122014-12-07Constant on time (COT) control in isolated converter
PCT/US2015/050536WO2016044497A1 (en)2014-09-192015-09-17Constant on-time (cot) control in isolated converter

Publications (2)

Publication NumberPublication Date
PH12017500476A1 PH12017500476A1 (en)2017-07-31
PH12017500476B1true PH12017500476B1 (en)2019-11-15

Family

ID=55533822

Family Applications (1)

Application NumberTitlePriority DateFiling Date
PH12017500476APH12017500476B1 (en)2014-09-192017-03-13Constant on-time (cot) control in isolated converter

Country Status (6)

CountryLink
EP (1)EP3195460A4 (en)
JP (1)JP6570202B2 (en)
KR (1)KR101915057B1 (en)
CN (1)CN105490567B (en)
PH (1)PH12017500476B1 (en)
WO (1)WO2016044497A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
CN117590056B (en)*2024-01-152024-04-26广州德肯电子股份有限公司Alternating current-direct current signal isolation detection circuit and detection device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6525514B1 (en)*2000-08-082003-02-25Power Integrations, Inc.Method and apparatus for reducing audio noise in a switching regulator
US7023717B2 (en)*2001-05-102006-04-04Fidelix Y.K.Switching power supply apparatus
US6510062B2 (en)*2001-06-252003-01-21Switch Power, Inc.Method and circuit to bias output-side width modulation control in an isolating voltage converter system
US6998828B2 (en)*2004-03-292006-02-14Semiconductor Components Industries, L.L.C.Low audible noise power supply controller and method therefor
RU2264685C1 (en)*2004-04-012005-11-20Общество с ограниченной ответственностью Научно-производственное предприятие НПП "Поликоммуникационные системы"Regulated voltage converter
CN1938924B (en)*2004-04-132010-04-28崇贸科技股份有限公司PWM controller with modulator for power saving and noise reduction
US7280376B2 (en)2004-10-152007-10-09Dell Products L.P.Primary side voltage sense for AC/DC power supplies capable of compensation for a voltage drop in the secondary
EP1900087A2 (en)*2005-07-062008-03-19Cambridge Semiconductor LimitedSwitch mode power supply control systems
US7483281B2 (en)*2006-08-112009-01-27System General Corp.Multi-channel power converter with switching frequency modulation circuit for power saving
JP4947147B2 (en)*2007-07-182012-06-06株式会社村田製作所 Isolated DC-DC converter
US7983061B2 (en)*2008-02-222011-07-19System General CorporationSwitching controller capable of reducing acoustic noise for power converters
US8253403B2 (en)*2008-12-162012-08-28Green Solution Technology Co., Ltd.Converting circuit and controller for controlling the same
WO2011051824A1 (en)2009-10-302011-05-05Koninklijke Philips Electronics N.V.Isolated power converter having reduced stanby power
JP2012050191A (en)*2010-08-252012-03-08Rohm Co LtdSwitching regulator
WO2012109783A1 (en)*2011-02-142012-08-23Intersil Americas Inc.Isolated boost dc/dc converter
JP2013027145A (en)*2011-07-212013-02-04Sanken Electric Co LtdSwitching power supply unit
US8873254B2 (en)2012-03-122014-10-28Linear Technology CorporationIsolated flyback converter with sleep mode for light load operation
CN103457453B (en)*2012-06-042016-05-11台达电子工业股份有限公司 A control method for reducing audio noise

Also Published As

Publication numberPublication date
JP2017529051A (en)2017-09-28
KR20170048462A (en)2017-05-08
KR101915057B1 (en)2018-12-28
WO2016044497A1 (en)2016-03-24
CN105490567B (en)2018-04-13
JP6570202B2 (en)2019-09-04
EP3195460A1 (en)2017-07-26
CN105490567A (en)2016-04-13
EP3195460A4 (en)2018-05-16
PH12017500476A1 (en)2017-07-31

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