Overvoltage protection circuit, overvoltage protection method and apparatus

The invention discloses an overvoltage protection circuit, an overvoltage protection method and apparatus. The overvoltage protection circuit comprises a reference voltage selection circuit, an overvoltage protection comparator, a power tube driving module and an input voltage partial voltage module...

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Bibliographic Details
Main Authors HU JIANWEI, LUO XUCHENG, CHENG JIANTAO
Format Patent
LanguageChinese
English
Published 08.06.2018
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Summary:The invention discloses an overvoltage protection circuit, an overvoltage protection method and apparatus. The overvoltage protection circuit comprises a reference voltage selection circuit, an overvoltage protection comparator, a power tube driving module and an input voltage partial voltage module, wherein the reference voltage selection circuit comprises a rise rate detection circuit, a controlcircuit and a voltage regulation circuit; the rise rate detection circuit is used for detecting the rise rate of the input voltage; the control circuit is used for controlling the voltage regulationcircuit to output a voltage matched with the rise rate; the rise rate is higher, the output voltage of the voltage regulation circuit is lower; the input voltage partial voltage module is used for obtaining the partial voltage of the input voltage; and the overvoltage protection comparator is used for outputting an electric level signal for controlling the power tube driving module to disconnect asubsequent circuit when it
Bibliography:Application Number: CN201711392723