JPH0237591U - - Google Patents

Info

Publication number
JPH0237591U
JPH0237591U JP11503788U JP11503788U JPH0237591U JP H0237591 U JPH0237591 U JP H0237591U JP 11503788 U JP11503788 U JP 11503788U JP 11503788 U JP11503788 U JP 11503788U JP H0237591 U JPH0237591 U JP H0237591U
Authority
JP
Japan
Prior art keywords
output
circuit
power supply
switching element
frequency
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
Application number
JP11503788U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP11503788U priority Critical patent/JPH0237591U/ja
Publication of JPH0237591U publication Critical patent/JPH0237591U/ja
Priority to US08/032,728 priority patent/US5590033A/en
Pending legal-status Critical Current

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Description

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

第1図は、この考案に係る電源装置の回路図で
ある。 1:直流電源部、2:インバータ回路、3:整
流回路、4:電圧検出回路、5:制御回路、6:
PLL回路、Tr,Tr:スイツチング用ト
ランジスタ、PCL:クロツク入力端子。
FIG. 1 is a circuit diagram of a power supply device according to this invention. 1: DC power supply section, 2: Inverter circuit, 3: Rectifier circuit, 4: Voltage detection circuit, 5: Control circuit, 6:
PLL circuit, Tr 1 and Tr 2 : switching transistors, PCL: clock input terminal.

Claims (1)

【実用新案登録請求の範囲】 (1) 直流電源と、スイツチング素子と、このス
イツチング素子を所定のスイツチング周波数でオ
ン・オフする制御回路とを備え、前記直流電源の
出力をチヨツピングすることにより負荷へ供給さ
れる直流出力を制御し、または前記直流電源の出
力を一旦交流電圧に変換することによりその直流
電圧を変圧して前記負荷へ供給する電源装置にお
いて、 前記制御回路が、外部クロツク入力端子と、前
記スイツチング周波数をこの外部クロツク入力端
子に印加されるクロツクの周波数またはその整数
倍の周波数に合致させる同期回路を具備すること
を特徴とする電源装置。 (2) 前記制御回路は、前記直流出力を検出する
検出回路と、前記同期回路としてのPLL回路と
、このPLL回路を構成する電圧制御発振器の出
力を基準周波数とし、前記検出回路の出力に応じ
たデユーテイ比のパルスを発生するPWM回路と
、このPWM回路の出力に基づいて前記スイツチ
ング素子をオン・オフする駆動回路とを備えたも
のである請求項1の電源装置。
[Claims for Utility Model Registration] (1) Comprising a DC power supply, a switching element, and a control circuit that turns on and off the switching element at a predetermined switching frequency, the output of the DC power supply can be applied to a load by chopping the output of the DC power supply. In the power supply device that controls the supplied DC output or once converts the output of the DC power source into an AC voltage to transform the DC voltage and supply it to the load, the control circuit is connected to an external clock input terminal. . A power supply device comprising: a synchronization circuit that matches the switching frequency with the frequency of a clock applied to the external clock input terminal or an integral multiple thereof. (2) The control circuit has a detection circuit that detects the DC output, a PLL circuit as the synchronization circuit, and an output of a voltage controlled oscillator constituting this PLL circuit as a reference frequency, and operates according to the output of the detection circuit. 2. The power supply device according to claim 1, further comprising: a PWM circuit that generates pulses with a duty ratio of 1, and a drive circuit that turns on and off the switching element based on the output of the PWM circuit.
JP11503788U 1988-09-02 1988-09-02 Pending JPH0237591U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11503788U JPH0237591U (en) 1988-09-02 1988-09-02
US08/032,728 US5590033A (en) 1988-09-02 1993-03-16 Power source apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11503788U JPH0237591U (en) 1988-09-02 1988-09-02

Publications (1)

Publication Number Publication Date
JPH0237591U true JPH0237591U (en) 1990-03-13

Family

ID=31356326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11503788U Pending JPH0237591U (en) 1988-09-02 1988-09-02

Country Status (1)

Country Link
JP (1) JPH0237591U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172977A (en) * 1983-03-18 1984-09-29 Matsushita Electric Ind Co Ltd Switching power source circuit
JPS6125089B2 (en) * 1979-03-12 1986-06-13 Kureha Kagaku Kogyo Kk
JPS6214860B2 (en) * 1981-04-02 1987-04-04 Mitsubishi Electric Corp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6125089B2 (en) * 1979-03-12 1986-06-13 Kureha Kagaku Kogyo Kk
JPS6214860B2 (en) * 1981-04-02 1987-04-04 Mitsubishi Electric Corp
JPS59172977A (en) * 1983-03-18 1984-09-29 Matsushita Electric Ind Co Ltd Switching power source circuit

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