控制电路和开关模式变换器

Abstract

The utility model discloses a control circuit and a switch mode transformer, wherein the switch mode converter comprises a first switch tube. The control circuit controls on and off of the first switch tube to enable the output voltage of the switch mode converter to equal a preset output reference voltage value. The control circuit turns off the first switch tube and at least maintains a period of turn-off time when the output voltage of the switch mode converter is larger than a first threshold voltage, and thus overshoot of the output voltage is reduced, wherein the first threshold voltage is smaller than the preset output reference voltage value.
本实用新型公开了一种控制电路和开关模式变换器,其中开关模式变换器包括第一开关管,控制电路控制第一开关管的导通与关断使开关模式变换器的输出电压等于预设的输出参考电压值,所述控制电路在开关模式变换器的输出电压大于第一阈值电压时关断第一开关管并至少维持一定的关断时间,从而减小输出电压的过冲,其中第一阈值电压小于预设的输出参考电压值。

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Cited By (7)

    Publication numberPublication dateAssigneeTitle
    CN-102801288-ANovember 28, 2012成都芯源系统有限公司Control circuit, switching mode convertor and control method
    CN-102801288-BMay 13, 2015成都芯源系统有限公司控制电路、开关模式变换器及控制方法
    CN-103346536-AOctober 09, 2013昂宝电子(上海)有限公司System and method used for performing two-stage protection on power conversion system
    CN-103346536-BFebruary 17, 2016昂宝电子(上海)有限公司用于对电源变换系统进行两级保护的系统和方法
    CN-104917370-ASeptember 16, 2015登丰微电子股份有限公司降压转换控制器
    CN-104917370-BJuly 07, 2017登丰微电子股份有限公司降压转换控制器
    CN-105572528-AMay 11, 2016意法半导体股份有限公司检测电路,相关有源放电电路、集成电路以及方法