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Active clamping circuit, active clamping circuit system and active clamping circuit manufacturing method

A technology of clamping circuit and clamping capacitor, which is applied in the direction of control/regulation system, electrical components, and adjustment of electrical variables, etc., and can solve problems such as high peak voltage of the circuit, breakdown of the switch tube, etc.

Pending Publication Date: 2020-03-17
SHINRY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of transformer leakage inductance, a higher peak voltage will be generated in the circuit, which may break down the switch tube

Method used

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  • Active clamping circuit, active clamping circuit system and active clamping circuit manufacturing method
  • Active clamping circuit, active clamping circuit system and active clamping circuit manufacturing method
  • Active clamping circuit, active clamping circuit system and active clamping circuit manufacturing method

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] Each will be described in detail below.

[0037]The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", as well as any variations thereof, ...

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PUM

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Abstract

The application discloses an active clamping circuit, an active clamping circuit system and an active clamping circuit manufacturing method. The active clamping circuit comprises an input circuit, a transformer and an output circuit, wherein the input circuit comprises a clamping circuit module and a discharge circuit module, the clamping circuit module comprises a second capacitor and a second switch tube, the second capacitor is a clamping capacitor, and the second switch tube is a clamping switch tube; the input circuit is externally connected with an input power supply, the clamping capacitor is connected with the discharge circuit module in parallel, the input circuit is connected with the output circuit through the transformer, and the output circuit is connected with a load. The clamping capacitor in the active clamping circuit is connected with the discharge circuit module in parallel, so that the clamping switch tube is prevented from being damaged by voltage spike energy on the clamping capacitor, and the problem of surge impact on the clamping switch tube is solved.

Description

technical field [0001] The present application relates to the field of circuit design, in particular to an active clamping circuit, a manufacturing method thereof, and an active clamping system. Background technique [0002] In recent years, with the development and innovation of power electronics technology, switching power supplies are widely used in electronic equipment. A switching power supply is a power supply that maintains a stable output voltage by controlling the time when the switching tube is turned on and off. Due to the existence of transformer leakage inductance, high peak voltage will be generated in the circuit, which may break down the switch tube. Contents of the invention [0003] The embodiment of the present application provides an active clamping circuit and its manufacturing method, and an active clamping system. The active clamping circuit adopts a simple circuit and adds a discharge circuit module, which can effectively eliminate the active clamp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/32H02M3/335
CPCH02M1/32H02M3/33523H02M1/0038
Inventor 李祥赵德琦吴壬华
Owner SHINRY TECH
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