PH12017500477B1 - Constant on-time (cot) control in isolated converter - Google Patents

Constant on-time (cot) control in isolated converter

Info

Publication number
PH12017500477B1
PH12017500477B1 PH12017500477A PH12017500477A PH12017500477B1 PH 12017500477 B1 PH12017500477 B1 PH 12017500477B1 PH 12017500477 A PH12017500477 A PH 12017500477A PH 12017500477 A PH12017500477 A PH 12017500477A PH 12017500477 B1 PH12017500477 B1 PH 12017500477B1
Authority
PH
Philippines
Prior art keywords
electronic switch
control signal
constant
processor
primary side
Prior art date
Application number
PH12017500477A
Other versions
PH12017500477A1 (en
Inventor
Tien-Chi Lin
Chih-Yuan Liu
Yueh-Ping Yu
Jung-Pei Cheng
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 US14/562,729 external-priority patent/US9954455B2/en
Application filed by Alpha & Omega Semiconductor Cayman Ltd filed Critical Alpha & Omega Semiconductor Cayman Ltd
Publication of PH12017500477A1 publication Critical patent/PH12017500477A1/en
Publication of PH12017500477B1 publication Critical patent/PH12017500477B1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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.
PH12017500477A 2014-09-19 2017-03-13 Constant on-time (cot) control in isolated converter PH12017500477B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201410483054.8A CN105490541B (en) 2014-09-19 2014-09-19 Fixed turn-on time suitching type conversion equipment
US14/562,729 US9954455B2 (en) 2014-09-12 2014-12-07 Constant on time COT control in isolated converter
PCT/US2015/050528 WO2016044489A1 (en) 2014-09-19 2015-09-16 Constant on-time (cot) control in isolated converter

Publications (2)

Publication Number Publication Date
PH12017500477A1 PH12017500477A1 (en) 2017-08-07
PH12017500477B1 true PH12017500477B1 (en) 2017-08-07

Family

ID=55533818

Family Applications (1)

Application Number Title Priority Date Filing Date
PH12017500477A PH12017500477B1 (en) 2014-09-19 2017-03-13 Constant on-time (cot) control in isolated converter

Country Status (6)

Country Link
EP (1) EP3195455A4 (en)
JP (1) JP6570623B2 (en)
KR (1) KR101883708B1 (en)
CN (1) CN105490541B (en)
PH (1) PH12017500477B1 (en)
WO (1) WO2016044489A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI688194B (en) 2019-03-08 2020-03-11 宏碁股份有限公司 Power supply circuit
CN110022050A (en) * 2019-04-28 2019-07-16 国网江西省电力有限公司电力科学研究院 A kind of frequency changing power device
TWI699640B (en) * 2019-05-16 2020-07-21 晶豪科技股份有限公司 Contstant on-time controller and buck regulator device using the same
CN114400899B (en) * 2020-11-16 2023-07-18 上海百功半导体有限公司 Novel zero-voltage switching control circuit, method and voltage converter

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178969A (en) * 1983-03-29 1984-10-11 Fujitsu Ltd Dc/dc converter
EP0689731A1 (en) * 1993-03-17 1996-01-03 National Semiconductor Corporation Frequency shift circuit for switching regulator
US5841641A (en) * 1996-05-01 1998-11-24 Compaq Computer Corporation Protected zero-crossing detection using switching transistor's on-resistance
US5757626A (en) * 1996-06-21 1998-05-26 Delta Electronics Inc. Single-stage, single-switch, islolated power-supply technique with input-current shaping and fast output-voltage regulation
JP3429417B2 (en) * 1996-11-15 2003-07-22 新電元工業株式会社 Forward type DC-DC converter
JP4210803B2 (en) * 1998-05-11 2009-01-21 サンケン電気株式会社 Synchronous rectification type DC-DC converter
US6456511B1 (en) * 2000-02-17 2002-09-24 Tyco Electronics Corporation Start-up circuit for flyback converter having secondary pulse width modulation
US7023717B2 (en) * 2001-05-10 2006-04-04 Fidelix Y.K. Switching power supply apparatus
US6510062B2 (en) * 2001-06-25 2003-01-21 Switch Power, Inc. Method and circuit to bias output-side width modulation control in an isolating voltage converter system
US6885016B2 (en) * 2001-09-04 2005-04-26 Eugene Robert Worley Switching power supply circuit using a silicon based LED for feedback
US6563718B1 (en) * 2001-12-06 2003-05-13 Koninklijke Philips Electronics N.V. Capacitively coupled power converter
JP5152185B2 (en) * 2007-06-29 2013-02-27 株式会社村田製作所 Switching power supply
US7911815B2 (en) * 2008-12-31 2011-03-22 Grenergy Opto, Inc. Primary-side feedback control device and related method for a power converter
JP5143104B2 (en) * 2009-09-30 2013-02-13 コーセル株式会社 Switching power supply
US8451628B2 (en) * 2010-04-01 2013-05-28 Analog Devices, Inc. Switching converter systems with isolating digital feedback loops
JP5170165B2 (en) * 2010-06-11 2013-03-27 株式会社村田製作所 Isolated switching power supply
TWI441427B (en) * 2010-12-15 2014-06-11 Richtek Technology Corp Shunt regulator, flyback converter and control method for its output feedback
US9444347B2 (en) * 2011-04-15 2016-09-13 Telefonaktiebolaget Lm Ericsson (Publ) Switched mode power supply with a simplified start-up supply
JP2013021785A (en) * 2011-07-08 2013-01-31 Brintz Technologie Co Ltd Power supply control method and power supply control device
US20130016535A1 (en) * 2011-07-12 2013-01-17 Power Systems Technologies, Ltd. Controller for a Power Converter and Method of Operating the Same
US20130229832A1 (en) * 2012-03-02 2013-09-05 Apple Inc. Controlling a flyback converter for use with a computer system
CN202931197U (en) * 2012-10-11 2013-05-08 无锡市晶源微电子有限公司 Flyback converter based on transformer transformation
CN103051192A (en) * 2012-12-12 2013-04-17 青岛联盟电子仪器有限公司 Flyback switching circuit controlled in double-peak current mode
US9136765B2 (en) * 2013-03-08 2015-09-15 Power Integrations, Inc. Techniques for controlling a power converter using multiple controllers

Also Published As

Publication number Publication date
PH12017500477A1 (en) 2017-08-07
EP3195455A4 (en) 2018-05-30
EP3195455A1 (en) 2017-07-26
CN105490541B (en) 2018-08-03
CN105490541A (en) 2016-04-13
KR20170045328A (en) 2017-04-26
WO2016044489A1 (en) 2016-03-24
JP2017529050A (en) 2017-09-28
JP6570623B2 (en) 2019-09-04
KR101883708B1 (en) 2018-07-31

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