Control apparatus of voltage converter

A technology of voltage converters and control devices, which is applied in the direction of control/regulation systems, instruments, and conversion equipment without intermediate conversion to AC, and can solve problems such as high cost and complicated circuit design
CN1455508AInactive Publication Date: 2003-11-12UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO LTD
Publication Date
2003-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A control device connected between power switch and output end of a voltage convertor comprises a comparator and a trigger circuit. The comparator comprises a positive input end connected in electricity to a reference voltage, a negative input end in electricity with output end of the voltage convertor and an output end connected in electricity with the power switch and a voltage source; and the trigger circuit comprises a resistance connected in electricity between the reference voltage and positive input end of the comparator and a feedback resistance as well as a feedback capacity connected in series between the positive input end and the output end.
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Description

(1) Technical field

[0001] The present invention relates to a control device, in particular to a control device of a voltage converter capable of outputting a control pulse with a bistable state, accurately controlling the synchronous switching action of the power switch, and achieving voltage stabilization effect at the same time. (2) Background technology

[0002] Generally, a control device is provided in a voltage converter to adjust the output voltage of the voltage converter, and the control device used is usually a pulse width modulation controller, but the pulse width modulation controller has quite a lot of components , mainly includes an error amplifier, a triangular wave generator, a Schmitt comparator, a control gate and a level converter / FET driver, resulting in a relatively complex circuit design and a disadvantage of high cost. (3) Contents of the invention

[0003] The object of the present invention is to provide a control device for a voltage converter ca...

Claims

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