The invention discloses a driving circuit with EMI suppression and an automobile motor driving system. The EMI suppression driving circuit comprises a first filtering unit, a second filtering unit, a third filtering unit, a driving power supply and a driving chip. The first filtering unit comprises a differential mode filtering unit and a common mode filtering unit. According to the embodiment of the invention, the common-mode inductor filtering unit and the differential-mode filtering unit are used for filtering the power supply, the second filtering unit is used for supplying power to the driving chip, and the third filtering unit is used for supplying power to the driving power supply, so that the third filtering unit separates the driving power supply from the driving chip; the problem that transient voltage and current generated by an existing power semiconductor device generate electromagnetic interference on a low-voltage power supply loop and further interfere with other electronic equipment of a whole vehicle is solved.

    本发明公开了一种具有EMI抑制的驱动电路及汽车电机驱动系统。所述EMI抑制驱动电路包括:第一滤波单元、第二滤波单元、第三滤波单元、驱动电源和驱动芯片。第一滤波单元包括差模滤波单元和共模滤波单元。本发明实施例通过共模电感滤波单元和差模滤波单元对供电电源进行滤波,经过第二滤波单元给驱动芯片供电,再经过第三滤波单元给驱动电源供电,这样第三滤波单元将驱动电源与驱动芯片分开,解决现有功率半导体器件产生瞬变的电压和电流对低压电源回路产生的电磁干扰,进而干扰整车其他电子设备的问题。


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    Title :

    Driving circuit with EMI (Electro-Magnetic Interference) suppression and automobile motor driving system


    Additional title:

    具有EMI抑制的驱动电路及汽车电机驱动系统


    Contributors:
    WANG ZHONGYU (author) / HUANG RONGHUA (author) / LIU ZHIQIANG (author)

    Publication date :

    2022-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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