JPS61162258U - - Google Patents
Info
- Publication number
- JPS61162258U JPS61162258U JP4498285U JP4498285U JPS61162258U JP S61162258 U JPS61162258 U JP S61162258U JP 4498285 U JP4498285 U JP 4498285U JP 4498285 U JP4498285 U JP 4498285U JP S61162258 U JPS61162258 U JP S61162258U
- Authority
- JP
- Japan
- Prior art keywords
- power output
- output elements
- circuit
- gate drive
- photocoupler
- 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
Links
- 230000005856 abnormality Effects 0.000 claims 1
- 230000000295 complement effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の一実施例によるパワー出力
素子の保護回路を示す回路図、第２図は従来のパ
ワー出力素子の保護回路を示す回路図である。
３，４はパワーＭＯＳＦＥＴ、８はゲート駆動
回路、１９，２０はホトカプラ。なお、図中、同
一符号は同一、又は相当部分を示す。
FIG. 1 is a circuit diagram showing a protection circuit for a power output device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional protection circuit for a power output device. 3 and 4 are power MOSFETs, 8 is a gate drive circuit, and 19 and 20 are photocouplers. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
母線間に直列接続して相補的に駆動する回路に於
いて、前記各パワー出力素子のゲート駆動回路に
対してその出力側がそれぞれ並列に接続されたフ
オトカプラを設け、この各フオトカプラに対して
異常判別信号を供給してオンさせることにより、
前記各パワー出力素子のゲート駆動信号を落して
前記パワー出力素子を同時にオフさせることを特
徴とするパワー出力素子の保護回路。 In a circuit in which power output elements of different polarities are connected in series between DC power supply buses and driven complementary to each other, a photocoupler whose output side is connected in parallel to the gate drive circuit of each of the power output elements is used. By supplying an abnormality determination signal to each photocoupler and turning it on,
A protection circuit for a power output element, characterized in that the gate drive signal of each of the power output elements is dropped to simultaneously turn off the power output elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4498285U JPH0613586Y2 (en) | 1985-03-29 | 1985-03-29 | Power output element protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4498285U JPH0613586Y2 (en) | 1985-03-29 | 1985-03-29 | Power output element protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61162258U true JPS61162258U (en) | 1986-10-07 |
| JPH0613586Y2 JPH0613586Y2 (en) | 1994-04-06 |
Family
ID=30558064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4498285U Expired - Lifetime JPH0613586Y2 (en) | 1985-03-29 | 1985-03-29 | Power output element protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613586Y2 (en) |
-
1985
- 1985-03-29 JP JP4498285U patent/JPH0613586Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613586Y2 (en) | 1994-04-06 |