JPS5975784U - switching power supply - Google Patents

switching power supply

Info

Publication number
JPS5975784U
JPS5975784U JP17203982U JP17203982U JPS5975784U JP S5975784 U JPS5975784 U JP S5975784U JP 17203982 U JP17203982 U JP 17203982U JP 17203982 U JP17203982 U JP 17203982U JP S5975784 U JPS5975784 U JP S5975784U
Authority
JP
Japan
Prior art keywords
circuit
power supply
switching power
flywheel diode
detection
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
Application number
JP17203982U
Other languages
Japanese (ja)
Other versions
JPS6349100Y2 (en
Inventor
江木　豊
Original Assignee
東光株式会社
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 東光株式会社 filed Critical 東光株式会社
Priority to JP17203982U priority Critical patent/JPS5975784U/en
Publication of JPS5975784U publication Critical patent/JPS5975784U/en
Application granted granted Critical
Publication of JPS6349100Y2 publication Critical patent/JPS6349100Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)
  • Protection Of Static Devices (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のスイッチング電源装置の回路図であり、
第２図、第３図は本考案のスイッチング電源装置の実施
例を示す回路図である。 １：交流源、２，９：整流回路、３，８：制御回路、４
、　４’、　７．７’　　：出力端、５．１０：検出回
路、６：駆動停止回路、１１：電圧比較器、ＤＩ。 Ｄ４：フライホイールダイオード、Ｄ２：ダイオード、
Ｄ３．Ｄ５：整流タイオート、ｚｌ、ｚ２．ｚ３゜Ｚ４
：ツ゛エナダイオード、ｐｌ、　ｐ２．　Ｐ３：接続点
、Ｓｌ、　Ｓ２：基準電源、ＳＡ：サイリスタ、Ｌｌ、
　Ｌ２：チョークコイル、Ｑｌ、Ｑ２．Ｑ３：トランジ
スタ。Figure 1 is a circuit diagram of a conventional switching power supply.
FIGS. 2 and 3 are circuit diagrams showing an embodiment of the switching power supply device of the present invention. 1: AC source, 2, 9: Rectifier circuit, 3, 8: Control circuit, 4
, 4', 7.7': Output terminal, 5.10: Detection circuit, 6: Drive stop circuit, 11: Voltage comparator, DI. D4: flywheel diode, D2: diode,
D3. D5: Rectifier tie auto, zl, z2. Z3゜Z4
: Zener diode, pl, p2. P3: Connection point, Sl, S2: Reference power supply, SA: Thyristor, Ll,
L2: Choke coil, Ql, Q2. Q3: Transistor.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）チョークコイルに接続されているフライホイール
ダイオードと直列に過電流検出用の抵抗を接続し、フラ
イホイールダイオードとチョークコイルの接続点にフラ
イホイールダイオードのオープン状態を検出する第１の
検出回路を接続し、フライホイールダイオードと過電流
検出用の抵抗の接続点にフライホイールダイオードのシ
ョート状態を検出する第２の検出回路を接続し、さらに
いずれかの検出回路の信号によりスイッチ素子の制御回
路の駆動を停止させるための駆動停止回路を設けである
ことを特徴とするスイッチング電源装置。(1) A first detection circuit that connects a resistor for overcurrent detection in series with the flywheel diode connected to the choke coil, and detects an open state of the flywheel diode at the connection point between the flywheel diode and the choke coil. A second detection circuit for detecting a short-circuit state of the flywheel diode is connected to the connection point between the flywheel diode and the resistor for overcurrent detection, and a control circuit for the switch element is connected by a signal from one of the detection circuits. A switching power supply device comprising a drive stop circuit for stopping the drive of the switching power supply device. （２）該駆動停止回路は過電圧保護回路を兼ねている実
用新案登録請求の範囲第１項記載のスイッチング電源装
置。(2) The switching power supply device according to claim 1, wherein the drive stop circuit also serves as an overvoltage protection circuit.
JP17203982U 1982-11-12 1982-11-12 switching power supply Granted JPS5975784U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17203982U JPS5975784U (en) 1982-11-12 1982-11-12 switching power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17203982U JPS5975784U (en) 1982-11-12 1982-11-12 switching power supply

Publications (2)

Publication Number Publication Date
JPS5975784U true JPS5975784U (en) 1984-05-23
JPS6349100Y2 JPS6349100Y2 (en) 1988-12-16

Family

ID=30375123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17203982U Granted JPS5975784U (en) 1982-11-12 1982-11-12 switching power supply

Country Status (1)

Country Link
JP (1) JPS5975784U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03135364A (en) * 1989-10-18 1991-06-10 Hitachi Ltd Power circuit equipped with open protecting circuit
JP2008148473A (en) * 2006-12-12 2008-06-26 Nec Commun Syst Ltd Power supply circuit and setting method of intermediate bus voltage of power supply circuit
JP2011205810A (en) * 2010-03-26 2011-10-13 Tdk-Lambda Corp Overvoltage protection circuit of non-insulation converter
US11676787B2 (en) * 2017-03-24 2023-06-13 Siemens Aktiengesellschaft Circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03135364A (en) * 1989-10-18 1991-06-10 Hitachi Ltd Power circuit equipped with open protecting circuit
JP2008148473A (en) * 2006-12-12 2008-06-26 Nec Commun Syst Ltd Power supply circuit and setting method of intermediate bus voltage of power supply circuit
JP2011205810A (en) * 2010-03-26 2011-10-13 Tdk-Lambda Corp Overvoltage protection circuit of non-insulation converter
US11676787B2 (en) * 2017-03-24 2023-06-13 Siemens Aktiengesellschaft Circuit breaker

Also Published As

Publication number Publication date
JPS6349100Y2 (en) 1988-12-16

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