High-frequency switch power supply

A high-frequency switching power supply, charging and discharging circuit technology, applied in the electrical field, can solve the problems of poor stability and low switching power supply efficiency, and achieve the effects of small voltage regulation rate, stable output voltage and high efficiency

Inactive Publication Date: 2015-05-27
王颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the existing switching power supply has the problems of low efficiency and poor stability

Method used

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  • High-frequency switch power supply

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Embodiment Construction

[0013] As shown in the figure, the present invention includes an oscillator, an A / D conversion module, a memory module, a comparison module, an overcurrent protection circuit, a charging and discharging circuit, a single-phase rectifier bridge, a differential amplifier and an overvoltage protection circuit, and is characterized in that: The converter, A / D conversion module, memory module and comparison module are connected to the ports of the main controller; the main controller is also connected to the overcurrent protection circuit, charge and discharge circuit, single-phase rectifier bridge, differential amplifier and overvoltage protection circuit.

[0014] The main controller is a SG3525 single-chip microcomputer.

[0015] The pin 16 of the control chip SG3525 is the reference voltage source output of the SG3525, the precision can reach (5.1±1%) V, temperature compensation is adopted, and an over-current protection circuit is provided. There is a dual-threshold comp...

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Abstract

The invention discloses a high-frequency switch power supply, belongs to the field of electricity, and particularly relates to an improvement of the high-frequency switch power supply for power generation, power transformation or power distribution. The invention provides the high-frequency switch power supply which is high in efficiency and high in stability. The high-frequency switch power supply comprises an oscillator, an A / D conversion module, a memorization module, a comparison module, an overcurrent protection circuit, a charging and discharging circuit, a single-phase rectification bridge, a differential amplifier and an overvoltage protection circuit, and is characterized in that the oscillator, the A / D conversion module, the memorization module and the comparison module are connected with a port of a main controller; the main controller is further connected with the overcurrent protection circuit, the charging and discharging circuit, the single-phase rectification bridge, the differential amplifier and the overvoltage protection circuit.

Description

technical field [0001] The invention belongs to the field of electricity, and in particular relates to an improvement of a high-frequency switching power supply for power generation, transformation or distribution. Background technique [0002] Switching power supply is a kind of power supply that uses modern power electronic technology to control the time ratio of switching on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating. At present, switching power supply is widely used in almost all electronic equipment due to its small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry. [0003] With the rapid development of power electronics technology, the relat...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/33507
Inventor 王颖
Owner 王颖
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