JPS6412866A - Snubber circuit - Google Patents

Snubber circuit

Info

Publication number
JPS6412866A
JPS6412866A JP16405487A JP16405487A JPS6412866A JP S6412866 A JPS6412866 A JP S6412866A JP 16405487 A JP16405487 A JP 16405487A JP 16405487 A JP16405487 A JP 16405487A JP S6412866 A JPS6412866 A JP S6412866A
Authority
JP
Japan
Prior art keywords
circuit
fet
transformer
snubber circuit
fets
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP16405487A
Other languages
Japanese (ja)
Other versions
JPH0767273B2 (en
Inventor
Kazuo Kobayashi
Hisao Shimizu
Fumiaki Ihara
Koji Kuwabara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Fujitsu Telecom Networks Ltd
Original Assignee
Fujitsu Ltd
Fujitsu Telecom Networks 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
Application filed by Fujitsu Ltd, Fujitsu Telecom Networks Ltd filed Critical Fujitsu Ltd
Priority to JP16405487A priority Critical patent/JPH0767273B2/en
Publication of JPS6412866A publication Critical patent/JPS6412866A/en
Publication of JPH0767273B2 publication Critical patent/JPH0767273B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Power Conversion In General (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To reduce the loss of a snubber circuit, by connecting the series circuit of a diode and a first capacitor in parallel to one of main switching elements. CONSTITUTION:A two-transistor forward type switching regulator is constituted of a transformer T1, a driving transformer T2, main switching elements or field effect transistors (FET) Q1, Q2, a drive control circuit 25 and the like. The induced voltage of the secondary winding of the transformer T1 is rectified, smoothed and outputted while the output is detected by said control circuit 25 to control the ON/OFF period of the FETs Q1, Q2. In this case, a snubber circuit 20 is constituted of first and second capacitors C1, C2, the FET Q3, driven in synchronized with the FETs Q1, Q2, and the like. When the FET Q3 is put ON, a resonance current is conducted through a resonance circuit, consisting of a choke coil L1 and the capacitors C1, C2.
JP16405487A 1987-07-02 1987-07-02 Snubber circuit Expired - Fee Related JPH0767273B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16405487A JPH0767273B2 (en) 1987-07-02 1987-07-02 Snubber circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16405487A JPH0767273B2 (en) 1987-07-02 1987-07-02 Snubber circuit

Publications (2)

Publication Number Publication Date
JPS6412866A true JPS6412866A (en) 1989-01-17
JPH0767273B2 JPH0767273B2 (en) 1995-07-19

Family

ID=15785913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16405487A Expired - Fee Related JPH0767273B2 (en) 1987-07-02 1987-07-02 Snubber circuit

Country Status (1)

Country Link
JP (1) JPH0767273B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539902A2 (en) * 1991-10-29 1993-05-05 ABBPATENT GmbH Switch-off snubber for A DC-DC converter
CN114079385A (en) * 2021-11-23 2022-02-22 吕真 Power supply circuit based on synchronous driving LLC resonant circuit series-parallel conversion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5265236B2 (en) * 2008-04-14 2013-08-14 Ａｓｔｉ株式会社 Snubber circuit for switching power supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539902A2 (en) * 1991-10-29 1993-05-05 ABBPATENT GmbH Switch-off snubber for A DC-DC converter
US5438501A (en) * 1991-10-29 1995-08-01 Abb Patent Gmbh Turn-off relief network for a direct voltage converter
CN114079385A (en) * 2021-11-23 2022-02-22 吕真 Power supply circuit based on synchronous driving LLC resonant circuit series-parallel conversion
CN114079385B (en) * 2021-11-23 2023-07-28 吕真 LLC resonant circuit series-parallel conversion power supply circuit based on synchronous drive

Also Published As

Publication number Publication date
JPH0767273B2 (en) 1995-07-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees