JPS5745722A - High-speed turn-off circuit for semiconductor switch element - Google Patents
High-speed turn-off circuit for semiconductor switch elementInfo
- 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
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.
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)
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 |
-
1980
- 1980-09-01 JP JP55120840A patent/JPS5745722A/en active Pending
Cited By (3)
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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