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Single-tube converter and control strategy thereof

A converter and single-tube technology, applied in the field of single-tube converters and their control strategies, can solve problems such as large occupied space, voltage oscillation, reverse recovery, etc., to reduce volume, solve reverse recovery, and reduce components Effect

Inactive Publication Date: 2016-07-27
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the output rectifier diode of the traditional single-ended forward converter with additional windings has shortcomings such as reverse recovery and voltage oscillation, and the filter circuit of the converter is a filter circuit combined with a large inductance and a capacitor, which makes the volume of the converter generally larger , takes up a lot of space

Method used

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  • Single-tube converter and control strategy thereof
  • Single-tube converter and control strategy thereof

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Embodiment Construction

[0023] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0024] 1. A single-tube converter is proposed.

[0025] The circuit topology of a single-transistor converter is as follows: figure 1 shown, including the transformer T r (primary side N 1 Coil, secondary coil N 2 , reset coil N 3 ), switch tube Q 1 (D 1 its body diode), the diode D 2 、D 3 , snubber inductance L r (can be provided by transformer leakage inductance), filter capacitor C o , load resistance R o . The switch tube may be a MOS tube.

[0026] Switch tube Q 1 source terminal, diode D 3 The anode terminal is also connected to the negative terminal of the input power supply. Reset coil N 3 Different terminal, transformer T r primary side N 1 The terminal with the same name is also connected to the positive pole of the input power supply. Transformer primary side N 1 Different terminal and switch tube Q 1 connected to the dra...

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PUM

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Abstract

The invention discloses a single-tube converter, which solves the problems of parasitic oscillation and reverse recovery of the output rectifier diode of a traditional single-ended forward converter with a magnetic reset winding; the filter circuit is only a capacitor connected in parallel in the converter output, reducing the use of magnetic components.

Description

technical field [0001] The invention belongs to the field of power electronic converters, and in particular relates to a single-tube converter and its control strategy. Background technique [0002] In the switching power supply conversion circuit, the single-ended forward converter with additional winding is widely used in small and medium power conversion occasions due to its advantages such as simple circuit structure, high operating reliability, and the transformer magnetization energy can be fed back to the input power without loss. However, the output rectifier diode of the traditional single-ended forward converter with additional windings has shortcomings such as reverse recovery and voltage oscillation, and the filter circuit of the converter is a filter circuit combined with a large inductance and a capacitor, which makes the volume of the converter generally larger , takes up a lot of space. Therefore, there is a need to find a converter circuit with a simple str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33523
Inventor 阚加荣吴云亚梁艳姚志垒商志根彭思敏汤雨
Owner YANCHENG INST OF TECH
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