JPS63316919A - Snubber circuit for switching semiconductor device - Google Patents

Snubber circuit for switching semiconductor device

Info

Publication number
JPS63316919A
JPS63316919A JP62152662A JP15266287A JPS63316919A JP S63316919 A JPS63316919 A JP S63316919A JP 62152662 A JP62152662 A JP 62152662A JP 15266287 A JP15266287 A JP 15266287A JP S63316919 A JPS63316919 A JP S63316919A
Authority
JP
Japan
Prior art keywords
diode
recovery time
fast
snubber
whose
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.)
Withdrawn
Application number
JP62152662A
Other languages
Japanese (ja)
Other versions
JPS63316919K1 (en
JPH0549129B2 (en
Inventor
Toshio Shigekane
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP15266287A priority Critical patent/JPH0549129B2/ja
Publication of JPS63316919K1 publication Critical patent/JPS63316919K1/ja
Publication of JPS63316919A publication Critical patent/JPS63316919A/en
Publication of JPH0549129B2 publication Critical patent/JPH0549129B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To lower the price of a snubber circuit by reducing the reverse bias safety operation area of a main transistor, by providing a parallel circuit with a first diode, and providing a second diode at least with the same polarity as that of the first diode and whose recovery time in a forward direction is smaller than that of the first diode.
CONSTITUTION: A snubber diode equivalence circuit DSI is constituted of the parallel circuit of a fast switching diode D2 whose recovery time in the forward direction is slow and whose recovery time in a backward direction is fast used in an on-going device, and an ordinary diode D1 whose recovery time in the forward direction is fast and whose recovery time in the backward direction is slow. As the ordinary diode D1, a diode smaller in capacity than that of the fast switching diode D2 is selected. In such a way, when the main transistor Q1 starts to be turned off, a collector current Ic starts shunt to a snubber capacity Cs side at a fast rise speed via the D1 in the snubber diode equivalence circuit DSI. Thereby, a first spike voltage VP1: is decreased. Since the ordinary diode D1 is the one small in capacity and whose voltage drop VF in the forward direction is large, most of a shunt current flows on the fast switching diode D2.
COPYRIGHT: (C)1988,JPO&Japio
JP15266287A 1987-06-19 1987-06-19 Expired - Fee Related JPH0549129B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15266287A JPH0549129B2 (en) 1987-06-19 1987-06-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15266287A JPH0549129B2 (en) 1987-06-19 1987-06-19

Publications (3)

Publication Number Publication Date
JPS63316919K1 JPS63316919K1 (en) 1988-12-26
JPS63316919A true JPS63316919A (en) 1988-12-26
JPH0549129B2 JPH0549129B2 (en) 1993-07-23

Family

ID=15545343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15266287A Expired - Fee Related JPH0549129B2 (en) 1987-06-19 1987-06-19

Country Status (1)

Country Link
JP (1) JPH0549129B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654538A (en) * 1991-10-25 1994-02-25 Semikron Elektron Gmbh Free-wheeling diode device for rectification passage
WO2001026207A3 (en) * 1999-10-01 2002-01-17 Online Power Supply Inc Non-saturating magnetic element(s) power converters and surge protection
US6493242B1 (en) 1999-10-01 2002-12-10 Online Power Supply, Inc. Power factor controller
US6952355B2 (en) 2002-07-22 2005-10-04 Ops Power Llc Two-stage converter using low permeability magnetics

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654538A (en) * 1991-10-25 1994-02-25 Semikron Elektron Gmbh Free-wheeling diode device for rectification passage
WO2001026207A3 (en) * 1999-10-01 2002-01-17 Online Power Supply Inc Non-saturating magnetic element(s) power converters and surge protection
US6493242B1 (en) 1999-10-01 2002-12-10 Online Power Supply, Inc. Power factor controller
US6504423B2 (en) 1999-10-01 2003-01-07 Online Power Supply, Inc. Solid state driving circuit
US6507501B2 (en) 1999-10-01 2003-01-14 Online Power Supply, Inc. Individual or distributed non-saturating magnetic element(s) (referenced herein as NSME) power converters
US6567281B2 (en) 1999-10-01 2003-05-20 Online Power Supply, Inc. Individual or distributed non-saturating magnetic element(s) power converters and multi-stage converters
US6952355B2 (en) 2002-07-22 2005-10-04 Ops Power Llc Two-stage converter using low permeability magnetics

Also Published As

Publication number Publication date
JPH0549129B2 (en) 1993-07-23
JPS63316919K1 (en) 1988-12-26

Similar Documents

Publication Publication Date Title
JPH0278320A (en) Semiconductor device
JPS599566A (en) Voltage detector
JPS60208119A (en) Semiconductor switch
JPH01190026A (en) Driving circuit fed with low power
JPS63316919A (en) Snubber circuit for switching semiconductor device
JPH02202375A (en) Power semiconductor module
JPS61125224A (en) Semiconductor circuit device
JPS63115420A (en) Bipolar logic circuit
JPS5851774A (en) Power source circuit
JPS63131072A (en) Peak detection circuit
JPS5849087A (en) Inverter device
JPH02113622A (en) Mosfet transistor driving circuit
JPH01259618A (en) Window circuit
JPS60140593A (en) Decoder circuit
JPS57132221A (en) Bipolar constant current device
JPS6318818A (en) Drive circuit for switching transistor
JPS62147814A (en) Switching circuit
JPS6191638A (en) State display device of camera
JPH01109023A (en) Power source circuit for electric discharge machining
JPH0360515A (en) Voltage detecting circuit
JPH03253261A (en) Parallel operation power source controlling circuit
JPS6447123A (en) Solid-state relay
JPS645352A (en) Protection circuit for chopper type switching regulator
JPS6360624A (en) Darlington connection power transistor
JPS63107223A (en) Optical coupling semiconductor element for triac triggering

Legal Events

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