JPS5745722A - High-speed turn-off circuit for semiconductor switch element - Google Patents

High-speed turn-off circuit for semiconductor switch element

Info

Publication number
JPS5745722A
JPS5745722A JP55120840A JP12084080A JPS5745722A JP S5745722 A JPS5745722 A JP S5745722A JP 55120840 A JP55120840 A JP 55120840A JP 12084080 A JP12084080 A JP 12084080A JP S5745722 A JPS5745722 A JP S5745722A
Authority
JP
Japan
Prior art keywords
turn
capacitor
current
circuit
pulse source
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.)
Pending
Application number
JP55120840A
Other languages
Japanese (ja)
Inventor
Kiyomi Watanabe
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.)
Origin Electric Co Ltd
Original Assignee
Origin 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 Origin Electric Co Ltd filed Critical Origin Electric Co Ltd
Priority to JP55120840A priority Critical patent/JPS5745722A/en
Publication of JPS5745722A publication Critical patent/JPS5745722A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/04—Modifications for accelerating switching
    • H03K17/042—Modifications for accelerating switching by feedback from the output circuit to the control circuit
    • H03K17/04213—Modifications for accelerating switching by feedback from the output circuit to the control circuit in bipolar transistor switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To reduce the turn-on time, by obtaining a driving current through the use of charge/discharge energy in a surge absorbing circuit at turn-off, in the absorption of semiconductor switching having a surge absorbing circuit. CONSTITUTION:When a base current supplies to transistors 1, 8 from a driving pulse source 3, a transistor (TR)1 starts flowing a main circuit current ic, a TR8 discharges the electric charging charge of a capacitor 6 to the base of the TR1 to make the TR1 further conductive. When discharge is started from the capacitor 6 and the voltage decreases until the TR8 turns off, the base current of the TR1 is supplied from the pulse source only to reduce the turn-on time. Next, when the supply from the pulse source is stopped, the TRs 1, 8 are turned off, and a current flowing to the TR1 is by-passed via a diode 5 and the capacitor 6 and the capacitor 6 is charged up to be kept until the next turn-off.
JP55120840A 1980-09-01 1980-09-01 High-speed turn-off circuit for semiconductor switch element Pending JPS5745722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55120840A JPS5745722A (en) 1980-09-01 1980-09-01 High-speed turn-off circuit for semiconductor switch element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120840A JPS5745722A (en) 1980-09-01 1980-09-01 High-speed turn-off circuit for semiconductor switch element

Publications (1)

Publication Number Publication Date
JPS5745722A true JPS5745722A (en) 1982-03-15

Family

ID=14796255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55120840A Pending JPS5745722A (en) 1980-09-01 1980-09-01 High-speed turn-off circuit for semiconductor switch element

Country Status (1)

Country Link
JP (1) JPS5745722A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826568A (en) * 1981-07-14 1983-02-17 ゼネラル・エレクトリツク・カンパニイ Snubber circuit for power switching transistor
FR2535551A1 (en) * 1982-11-02 1984-05-04 Danfoss As LOW POWER DISSIPATION ELECTRONIC SWITCHING DEVICE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826568A (en) * 1981-07-14 1983-02-17 ゼネラル・エレクトリツク・カンパニイ Snubber circuit for power switching transistor
JPH0328847B2 (en) * 1981-07-14 1991-04-22 Gen Electric
FR2535551A1 (en) * 1982-11-02 1984-05-04 Danfoss As LOW POWER DISSIPATION ELECTRONIC SWITCHING DEVICE

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