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High-stable-output VMOS follow current conduction control circuit

A circuit and freewheeling technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of poor reliability, high power consumption, low efficiency, etc., and achieve the effects of high power factor, low power consumption, and low cost

Inactive Publication Date: 2014-06-11
XIAN ZHIHAI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a highly stable output VMOS freewheeling conduction control circuit, which mainly solves the problems of high power consumption, low efficiency and poor reliability of existing low-voltage new energy power converters

Method used

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  • High-stable-output VMOS follow current conduction control circuit
  • High-stable-output VMOS follow current conduction control circuit
  • High-stable-output VMOS follow current conduction control circuit

Examples

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Embodiment Construction

[0022] The high stable output VMOS freewheeling conduction control circuit includes a reverse isolation circuit, the output end of the reverse isolation circuit is connected to the load through the energy storage filter circuit, and the input end of the reverse isolation circuit is connected to the output end of the VMOS switch circuit , the input end of the VMOS switch circuit is connected to the output end of the input power supply through the freewheeling inductance, the output end of the input power supply is connected to the input end of the width-adjustable pulse control circuit through the input current sampling circuit, and the output end of the energy storage filter circuit is passed through the output The current sampling circuit is connected to the input end of the width-adjustable pulse control circuit, the output end of the width-adjustable pulse control circuit is connected to the input end of the VMOS switch circuit through the drive signal synthesis circuit, the ...

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Abstract

The invention provides a high-stable-output VMOS follow current conduction control circuit which mainly solves the problems that an existing low-voltage new energy power converter is high in power consumption, low in efficiency and poor in reliability. The output end of an input power source of the high-stable-output VMOS follow current conduction control circuit is connected with the input end of a width modulation pulse control circuit through an input current sampling circuit. The output end of an energy storage filter circuit is connected with the input end of the width modulation pulse control circuit through an output current sampling circuit. The output end of the width modulation pulse control circuit is connected with the input end of a VMOS switching circuit through a drive signal synthetic circuit and a VMOS switching drive circuit in sequence. An output protection circuit is arranged in front of a load.

Description

technical field [0001] The invention relates to a power conversion circuit and belongs to the technical field of power conversion. Background technique [0002] In recent years, photovoltaic power generation, wind power generation, battery power supply and other renewable new energy systems with AC low voltage and DC low voltage power supply have been widely used. It is imperative to improve the power supply efficiency, power supply quality and power supply reliability of low voltage new energy power supply systems. [0003] At present, the power conversion known in the art basically adopts: [0004] 1. AC (AC) input, using a full-wave rectifier to rectify the input AC (AC) power to DC (DC) power, and then convert DC / DC to DC (DC) output. This kind of scheme solves the conversion problem of higher input voltage AC power supply and low-power power supply. However, when low-voltage AC power input and high-power power conversion, because the voltage drop of the AC / DC rectifie...

Claims

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Application Information

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IPC IPC(8): H02M1/088H02M1/32
Inventor 胡家培胡民海
Owner XIAN ZHIHAI POWER TECH
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