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Multistage-power-amplification-balanced-modulation-circuit-base mixing protection type switching voltage-stabilized power supply

A technology of power amplification and balanced modulation, applied in the direction of output power conversion device, emergency protection circuit device, DC power input conversion to DC power output, etc., can solve the problems of large ripple coefficient, low efficiency, complex circuit, etc., to achieve The effect of increasing the output current change control range, reducing radio frequency interference, and simplifying the circuit structure

Inactive Publication Date: 2015-09-09
CHENGDU LEIKEER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of large ripple coefficient, serious radio frequency interference, complex circuit and low efficiency existing in the current switch-type regulated power supply, and provide a hybrid protection switching regulated power supply based on a multi-stage power amplifier balanced modulation circuit

Method used

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  • Multistage-power-amplification-balanced-modulation-circuit-base mixing protection type switching voltage-stabilized power supply
  • Multistage-power-amplification-balanced-modulation-circuit-base mixing protection type switching voltage-stabilized power supply
  • Multistage-power-amplification-balanced-modulation-circuit-base mixing protection type switching voltage-stabilized power supply

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Embodiment

[0025] Such as figure 1 As shown, the present invention mainly consists of diode rectifier U, power amplifier P1, voltage comparator U2, transformer T, balance adjustment circuit, switching filter circuit, power output circuit, transformer feedback circuit, switching control circuit, oscillator 40, current comparison It is composed of I1, current comparator I2, slope compensator W, PWM controller 30, sliding regulator 50, hybrid protection circuit 10 and logic protection amplifier circuit 20.

[0026] Among them, the transformer T is composed of a primary coil L1 arranged on the primary side, a secondary coil L2 and a secondary coil L3 arranged on the secondary side. The present invention is provided with a sliding tap on the primary coil L1 of the transformer T, and the sliding tap is controlled by the sliding regulator 50 to ensure that the duty cycle of the PWM controller 30 and the common result of the switch control circuit Adjust the turns ratio between the primary winding ...

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Abstract

The invention discloses a switching voltage-stabilized power supply based on a multi-stage power amplification balanced modulation circuit. The switching voltage-stabilized power supply is mainly composed of a diode rectifier U, a power amplifier P1, a voltage comparator U2, a transformer T, a balanced adjustment circuit, a switching filter circuit and the like, wherein the balanced adjustment circuit is connected between the diode rectifier U and the voltage comparator U2 in series, the switching filter circuit is connected between the balanced adjustment circuit and the power amplifier P1 in series. The switching voltage-stabilized power supply is characterized in that a logic protection amplifying circuit is further connected between the Q end of the voltage comparator U2 and the negative electrode input end of the power amplifier P1 in series. According to the switching voltage-stabilized power supply based on the multi-stage power amplification balanced modulation circuit, the switching control circuit is composed of field-effect transistors, so that the switching voltage-stabilized power supply has a boosting mode and a voltage reducing mode, a full-voltage-range output current is controlled to be within + / - 0.1%, and compared with a traditional switching voltage-stabilized power supply, the output current change control precision is greatly improved.

Description

Technical field [0001] The invention relates to a switch regulated power supply, in particular to a hybrid protection switch regulated power supply based on a multi-stage power amplification balanced modulation circuit. Background technique [0002] With the continuous advancement of current technology, electronic products are becoming more and more powerful while also bringing great convenience to people's lives. The voltage stabilizing circuit is born out of operation. The traditional series linear adjusting voltage stabilizing circuit has the characteristics of high stability, adjustable output voltage, small ripple coefficient and simple circuit. However, the regulator tubes of these series linear regulator circuits always work in amplifying state, and current flows all the time, so the power consumption of the tubes is relatively large, and the efficiency of the circuit is not high, generally only 30% to 50%. %about. In order to overcome the above-mentioned shortcomings, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M1/14H02M1/44H02H7/125
CPCH02M3/33569H02M7/217
Inventor 黄涛
Owner CHENGDU LEIKEER SCI & TECH
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