JPS6437338U - - Google Patents
Info
- Publication number
- JPS6437338U JPS6437338U JP13263387U JP13263387U JPS6437338U JP S6437338 U JPS6437338 U JP S6437338U JP 13263387 U JP13263387 U JP 13263387U JP 13263387 U JP13263387 U JP 13263387U JP S6437338 U JPS6437338 U JP S6437338U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- load
- converter
- voltage
- overvoltage
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 9
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示すを構成ブロツ
ク図、第２図は本考案を具体化した回路図、第３
図は負荷供給線Ｖ０１の断線時における等価回路
図、第４図はリモートセンス線の断線時の等価回
路図、第５図はコモン線の断線時の等価回路図、
第６図は本考案の第２の実施例の構成ブロツク図
、第７図は本考案の変形実施例を示す構成ブロツ
ク図である。第８図は従来装置の構成ブロツク図
である。
１０…ＤＣ−ＤＣコンバータ、２０…負荷、３
１，３２…過電圧検出回路、３３…負電圧検出回
路、４０…ラツチ回路、５０…制御回路、Ｖ０…
負荷供給線、Ｓ＋，Ｓ−…リモートセンス線、Ｃ
ＯＭ…コモン線。
Fig. 1 is a configuration block diagram showing one embodiment of the present invention, Fig. 2 is a circuit diagram embodying the invention, and Fig. 3 is a block diagram showing an embodiment of the present invention.
The figure is an equivalent circuit diagram when the load supply line V01 is disconnected, Figure 4 is an equivalent circuit diagram when the remote sense line is disconnected, and Figure 5 is an equivalent circuit diagram when the common line is disconnected.
FIG. 6 is a block diagram of a second embodiment of the present invention, and FIG. 7 is a block diagram of a modified embodiment of the present invention. FIG. 8 is a block diagram of a conventional device. 10...DC-DC converter, 20...load, 3
1, 32... Overvoltage detection circuit, 33... Negative voltage detection circuit, 40... Latch circuit, 50... Control circuit, V0...
Load supply line, S+, S-...Remote sense line, C
OM...Common wire.
Claims (1)
圧を供給するＤＣ−ＤＣコンバータと、このＤＣ
−ＤＣコンバータの出力の供給を受ける負荷と、
この負荷に供給される電圧が過大にならないよう
に監視する過電圧検出回路と、この過電圧検出回
路によりＤＣ−ＤＣコンバータを制御する制御回
路とよりなる直流電源装置の過電圧保護回路にお
いて、 前記負荷に電力を供給する負荷供給線に接続さ
れた第１の過電圧検出回路と、この負荷に作用す
る電圧を検出するリモートセンス線に接続された
第２の過電圧検出回路と、この負荷のコモン電位
を定めるコモン線に接続された負電圧検出回路と
を備え、 第１または第２の過電圧検出回路若しくは負電
圧検出回路のいずれかが所定のしきい値電圧を越
える電圧を検出したときは、前記制御回路を介し
てＤＣ−ＤＣコンバータの出力を抑止するように
したことを特徴とする直流電源装置の過電圧保護
回路。[Claims for Utility Model Registration] A DC-DC converter that inputs an unstable DC power source and supplies a stabilized DC voltage, and this DC
- a load supplied with the output of the DC converter;
In the overvoltage protection circuit of a DC power supply device, the overvoltage protection circuit includes an overvoltage detection circuit that monitors the voltage supplied to the load so that it does not become excessive, and a control circuit that controls the DC-DC converter using the overvoltage detection circuit. a first overvoltage detection circuit connected to a load supply line that supplies the load, a second overvoltage detection circuit connected to a remote sense line that detects the voltage acting on this load, and a common that determines the common potential of this load. and a negative voltage detection circuit connected to the line, and when either the first or second overvoltage detection circuit or the negative voltage detection circuit detects a voltage exceeding a predetermined threshold voltage, the control circuit is 1. An overvoltage protection circuit for a DC power supply device, characterized in that the output of a DC-DC converter is suppressed through the DC-DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13263387U JPH0713396Y2 (en) | 1987-08-31 | 1987-08-31 | DC power supply overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13263387U JPH0713396Y2 (en) | 1987-08-31 | 1987-08-31 | DC power supply overvoltage protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6437338U true JPS6437338U (en) | 1989-03-07 |
| JPH0713396Y2 JPH0713396Y2 (en) | 1995-03-29 |
Family
ID=31389776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13263387U Expired - Lifetime JPH0713396Y2 (en) | 1987-08-31 | 1987-08-31 | DC power supply overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713396Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007202353A (en) * | 2006-01-27 | 2007-08-09 | Denso Corp | Controller for voltage conversion circuit |
| JP2020108288A (en) * | 2018-12-27 | 2020-07-09 | 新日本無線株式会社 | Switching power supply |
-
1987
- 1987-08-31 JP JP13263387U patent/JPH0713396Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007202353A (en) * | 2006-01-27 | 2007-08-09 | Denso Corp | Controller for voltage conversion circuit |
| JP2020108288A (en) * | 2018-12-27 | 2020-07-09 | 新日本無線株式会社 | Switching power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713396Y2 (en) | 1995-03-29 |