MOS transistor conduction low power consumption anti-jamming circuit

A MOS tube, low-power technology, applied in the field of power conversion circuits, can solve the problems of low efficiency, high power consumption, poor reliability, etc., and achieve the effects of low cost, low power consumption, and high power factor

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

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Problems solved by technology

[0008] The invention provides a MOS tube conduction low power consumption anti-interference circuit, which mainly solves the

Method used

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  • MOS transistor conduction low power consumption anti-jamming circuit
  • MOS transistor conduction low power consumption anti-jamming circuit
  • MOS transistor conduction low power consumption anti-jamming circuit

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Example Embodiment

[0022] The MOS tube conducts a low-power anti-interference circuit, including a reverse isolation circuit, the output end of the reverse isolation circuit is connected to the load through an energy storage filter circuit, and the input end of the reverse isolation circuit is connected to the output end of the VMOS switch circuit Connected, the input end of the VMOS switch circuit is connected to the output end of the input power supply through the freewheeling inductor, the output end of the input power supply is connected to the input end of the width-modulated pulse control circuit through the input current sampling circuit, and the output end of the energy storage filter circuit passes The output current sampling circuit is connected to the input end of the width-modulated pulse control circuit. The output end of the width-modulated pulse control circuit is connected to the input end of the VMOS switch circuit through the drive signal synthesis circuit, the VMOS switch drive c...

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Abstract

The invention provides an MOS transistor conduction low power consumption anti-jamming circuit. The problems that an existing low voltage new energy power adapter is high in power consumption, low in efficiency and poor in reliability are mainly solved. According to the MOS transistor conduction low power consumption anti-jamming circuit, an alternative PWM control mode is used for enabling an M1 and an M2 to be alternatively conducted, the working frequency of each VMOS switch is 1/2 of a circuit frequency, the VMOS switches can work in a low switching frequency, and the switching power consumption is greatly lowered. Correspondingly, the working frequency of an L device and a C device in the circuit is twice the frequency of a VMOS transistor, the high working frequency of the circuit lowers the requirement for an inductor (L) and a capacitor (C) in an LC circuit, and cost and technological difficulty are lowered. An output protecting circuit is arranged in front of a load, it can be guaranteed that BOOST output is automatically adjusted when the load is in short circuit, current-limiting output is achieved, and meanwhile low power consumption is still guaranteed.

Description

technical field [0001] The invention relates to a power conversion circuit. 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 rectifier circuit is relatively high, high power consumption is...

Claims

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Application Information

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