JPH02104787U - - Google Patents
Info
- Publication number
- JPH02104787U JPH02104787U JP1380289U JP1380289U JPH02104787U JP H02104787 U JPH02104787 U JP H02104787U JP 1380289 U JP1380289 U JP 1380289U JP 1380289 U JP1380289 U JP 1380289U JP H02104787 U JPH02104787 U JP H02104787U
- Authority
- JP
- Japan
- Prior art keywords
- output
- capacitor
- diode
- buck converter
- choke coil
- 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
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
従来の入出力非絶縁型バツクコンバータおよびバ
ツクコンバータ用電圧クランプ回路の回路図であ
る。
１……直流電源、３……出力平滑チヨークコイ
ル、４……出力コンデンサ、５……負荷、６……
コンデンサ、７……主スイツチング部、８……出
力ダイオード、９，１０……ダイオード、１１…
…抵抗器。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional input/output non-isolated buck converter and a voltage clamp circuit for the buck converter. 1...DC power supply, 3...Output smoothing choke coil, 4...Output capacitor, 5...Load, 6...
Capacitor, 7... Main switching section, 8... Output diode, 9, 10... Diode, 11...
…Resistor.
Claims (1)
スイツチング部で断続し前記出力平滑チヨークコ
イルに誘起するフライバツク電圧を出力ダイオー
ドを経由して負荷に接続する出力コンデンサに供
給し前記出力コンデンサに蓄積された電荷を出力
する入出力非絶縁型バツクコンバータの前記主ス
イツチング部を保護するバツクコンバータ用電圧
クランプ回路において、直列接続した第１のダイ
オードと第１のコンデンサとを前記出力平滑チヨ
ークコイルに並列接続し、前記第１のダイオード
と前記第１のコンデンサとの共通接続個所と前記
出力コンデンサとに第２のダイオードを接続し、
前記第１のコンデンサが吸収した過電圧による電
荷を前記出力コンデンサの端子間電圧の変動に応
じて前記第２のダイオードを通して前記出力コン
デンサに出力することを特徴とするバツクコンバ
ータ用電圧クランプ回路。 The DC current flowing through the output smoothing choke coil is switched on and off in the main switching section, and the flyback voltage induced in the output smoothing choke coil is supplied to the output capacitor connected to the load via the output diode, and the charge accumulated in the output capacitor is output. In a buck converter voltage clamp circuit that protects the main switching section of an input/output non-isolated buck converter, a first diode and a first capacitor connected in series are connected in parallel to the output smoothing choke coil, and the first connecting a second diode to a common connection point between the diode and the first capacitor and the output capacitor;
A voltage clamp circuit for a buck converter, characterized in that charge due to overvoltage absorbed by the first capacitor is output to the output capacitor through the second diode in accordance with fluctuations in voltage between terminals of the output capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1380289U JPH02104787U (en) | 1989-02-07 | 1989-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1380289U JPH02104787U (en) | 1989-02-07 | 1989-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02104787U true JPH02104787U (en) | 1990-08-21 |
Family
ID=31224425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1380289U Pending JPH02104787U (en) | 1989-02-07 | 1989-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02104787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015098472A1 (en) * | 2013-12-27 | 2015-07-02 | 株式会社村田製作所 | Power-supply circuit |
-
1989
- 1989-02-07 JP JP1380289U patent/JPH02104787U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015098472A1 (en) * | 2013-12-27 | 2015-07-02 | 株式会社村田製作所 | Power-supply circuit |
| JPWO2015098472A1 (en) * | 2013-12-27 | 2017-03-23 | 株式会社村田製作所 | Power circuit |
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