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TW200951665A - Sensing circuit and method for a flyback converter - Google Patents

Sensing circuit and method for a flyback converter

Info

Publication number
TW200951665A
TW200951665A TW097121165A TW97121165A TW200951665A TW 200951665 A TW200951665 A TW 200951665A TW 097121165 A TW097121165 A TW 097121165A TW 97121165 A TW97121165 A TW 97121165A TW 200951665 A TW200951665 A TW 200951665A
Authority
TW
Taiwan
Prior art keywords
sensing circuit
flyback converter
sense
transformer
input voltage
Prior art date
Application number
TW097121165A
Other languages
English (en)
Other versions
TWI368124B (zh
Inventor
Pei-Lun Huang
Kuang-Ming Chang
Original Assignee
Richtek Technology Corp
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
Application filed by Richtek Technology Corp filed Critical Richtek Technology Corp
Priority to TW097121165A priority Critical patent/TW200951665A/zh
Priority to US12/457,128 priority patent/US8890552B2/en
Publication of TW200951665A publication Critical patent/TW200951665A/zh
Application granted granted Critical
Publication of TWI368124B publication Critical patent/TWI368124B/zh

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • 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
    • H02M1/0009—Devices or circuits for detecting current in a converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
TW097121165A 2008-06-06 2008-06-06 Sensing circuit and method for a flyback converter TW200951665A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW097121165A TW200951665A (en) 2008-06-06 2008-06-06 Sensing circuit and method for a flyback converter
US12/457,128 US8890552B2 (en) 2008-06-06 2009-06-02 Sensing circuit and method for a flyback converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW097121165A TW200951665A (en) 2008-06-06 2008-06-06 Sensing circuit and method for a flyback converter

Publications (2)

Publication Number Publication Date
TW200951665A true TW200951665A (en) 2009-12-16
TWI368124B TWI368124B (zh) 2012-07-11

Family

ID=41399717

Family Applications (1)

Application Number Title Priority Date Filing Date
TW097121165A TW200951665A (en) 2008-06-06 2008-06-06 Sensing circuit and method for a flyback converter

Country Status (2)

Country Link
US (1) US8890552B2 (zh)
TW (1) TW200951665A (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105652074B (zh) 2014-12-03 2018-08-10 万国半导体(开曼)股份有限公司 电压检测电路及检测电压变化的方法
CN105763061B (zh) * 2014-12-17 2018-05-29 万国半导体(开曼)股份有限公司 反激转换器输出电流计算电路及计算方法
TWI587612B (zh) * 2015-03-10 2017-06-11 立錡科技股份有限公司 電源轉換器、其中的開關控制電路及電流感測電阻短路偵測方法
TWI641196B (zh) * 2017-05-05 2018-11-11 茂達電子股份有限公司 電流平衡電路與使用其之多相式電源轉換器
TWI759690B (zh) * 2020-02-19 2022-04-01 英屬開曼群島商萬國半導體（開曼）股份有限公司 一種固定導通時間的反激式轉換器及控制方法
US11081965B1 (en) * 2020-03-30 2021-08-03 Dialog Semiconductor Inc Universal input voltage detection system for a flyback converter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200833A (en) * 1977-10-31 1980-04-29 Wilkerson A W Power maximization circuit
DE2850960A1 (de) * 1977-11-25 1979-05-31 Mishima Kosan Co Ltd Koordinatenlesevorrichtung
GB9121506D0 (en) * 1991-10-10 1991-11-27 Smiths Industries Plc Resistance monitors
JP3924093B2 (ja) * 1999-07-15 2007-06-06 富士通株式会社 ビタビ復号器および送信装置
US6405047B1 (en) * 1999-12-01 2002-06-11 Samsung Electronics, Co., Ltd. Device and method for tracking mobile station's position in mobile communication system
EP1258407B1 (de) * 2001-05-16 2008-08-20 Robert Bosch Gmbh Verfahren und Vorrichtung zur Ermittlung eines korrigierten Offsetwertes
US6674656B1 (en) * 2002-10-28 2004-01-06 System General Corporation PWM controller having a saw-limiter for output power limit without sensing input voltage
US7196503B2 (en) * 2004-07-26 2007-03-27 Intersil Americas, Inc. Current averaging circuit for a PWM power converter
IL166445A (en) * 2005-01-23 2011-07-31 Mosaid Technologies Inc A standard and method for evaluating the termination of a transmission line based on the determination of a typical impedance
US7911808B2 (en) * 2007-02-10 2011-03-22 Active-Semi, Inc. Primary side constant output current controller with highly improved accuracy
US7586313B2 (en) * 2007-04-26 2009-09-08 Schlumberger Technology Corporation Determining electrical characteristics of an electrical cable

Also Published As

Publication number Publication date
US8890552B2 (en) 2014-11-18
TWI368124B (zh) 2012-07-11
US20090302827A1 (en) 2009-12-10

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees