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A Hybrid Multi-output Switching Converter with High Power Factor

A high power factor, switching converter technology, applied in the direction of converting DC power input to DC power output, AC power input converting to DC power output, and output power conversion devices, etc., can solve the complex and unstable drive of the converter. problems, to achieve the effect of simplifying the circuit structure and control loop, improving efficiency and low efficiency

Active Publication Date: 2021-01-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of multiple switching tubes and the floating reference ground, the converter still has the problem of complex driving and instability

Method used

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  • A Hybrid Multi-output Switching Converter with High Power Factor
  • A Hybrid Multi-output Switching Converter with High Power Factor
  • A Hybrid Multi-output Switching Converter with High Power Factor

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Embodiment Construction

[0040]The present invention will be further described in detail below with reference to the drawings and specific embodiments. The invention proposes a novel high power factor hybrid structure multi-channel constant current output switching converter. The converter adopts the integration of Buck-Boost and Buck PFC converters, and only uses one active switch. Through the proposed passive current sharing network, the automatic current sharing and functional factor correction functions of multiple outputs are realized. Through a series resonance network, the converter realizes the common ground of the switch tube and the output branch, which is convenient for sampling and drive control, simplifies the control, and reduces the volume of the converter. And without using a transformer, the step-down conversion function is realized, which further reduces the volume of the converter. In addition, due to the single-stage power conversion structure and the inductor critical conduction mode co...

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Abstract

The invention discloses a multi-output switching converter with a high power factor hybrid structure, which adopts the integration method of Buck-Boost and Buck PFC converters, uses only one active switch, and realizes multi-channel output through the proposed passive current sharing network Automatic current sharing and function factor correction functions; through a series resonant network, the switching tube and the output branch can be grounded together, which is convenient for sampling and drive control, simplifies control, and reduces the size of the converter; and without using a transformer In this case, the step-down conversion function is realized, which further reduces the size of the converter; in addition, due to the single-stage power conversion structure and inductive critical conduction mode control, high efficiency and high power factor are realized; at the same time, the converter Wide input voltage, wide output load, and low voltage stress can also be achieved.

Description

Technical field[0001]The invention relates to the technical field of switching converters, in particular to a high power factor mixed structure multi-output switching converter.Background technique[0002]In recent years, with the vigorous development of medium and small power switching converters, switching converters have become an indispensable part of modern electronic equipment and are ubiquitously integrated into people's daily production and life. With the continuous development of corresponding switching converter design technology, modeling methods and emerging semiconductor switching devices, switching converters are becoming more and more compact, reliable, and relatively cheap. They are used in various fields such as aerospace, military and defense, commercial and civilian use. Has been widely used.[0003]However, as power electronic equipment is connected to the grid on a large scale, a large number of harmonics are generated, which seriously affects the power quality of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/217H02M3/156H02M1/42H05B45/355H05B45/375H05B45/38H05B44/00
CPCH02M7/217H02M3/156H02M1/42H02M1/009H05B45/37Y02B20/30Y02B70/10
Inventor 刘雪山万宇阳贺明智周群梁斌涂国强张福高蒋奥博杨建平
Owner SICHUAN UNIV