순간 전류의 확보와 부하에 따른 과전류 보호를 양립한다. 과전류 보호 회로(71)는 역치 제어 신호 S170에 따라서 과전류 검출 역치 Vth를 제1 설정값(∝Iref)으로 할지 제1 설정값보다도 낮은 제2 설정값(∝Iset)으로 할지를 전환하는 역치 생성부(130)와, 감시 대상 전류에 따른 센스 신호 Vs와 과전류 검출 역치 Vth를 비교하여 과전류 보호 신호 S71을 생성하는 과전류 검출부(140)와, 제2 설정값에 따른 참조값 VIset(∝Iset)를 생성하는 참조값 생성부(150)와, 센스 신호 Vs와 참조값 VIset를 비교하여 비교 신호 VCMP를 생성하는 비교부(160)와, 비교 신호 VCMP를 감시하여 역치 제어 신호 S170을 생성하는 역치 제어부(170)를 갖는다.

    In order both to accommodate instantaneous current as well as overcurrent protection in accordance with the load, an overcurrent protection circuit has: a threshold value generation unit that, in accordance with a threshold value control signal, switches between setting an overcurrent detection threshold value to a first set value (∝ Iref) and a second set value (∝ Iset) lower than the first set value; an overcurrent detection unit that compares a sense signal in accordance with the current being monitored and the overcurrent detection value and generates an overcurrent protection signal; a reference value generation unit that generates a reference value (∝ Iset) in accordance with the seconds set value; a comparison unit that compares the sense signal and the reference value, and generates a comparison signal; and a threshold value control unit that monitors the comparison signal, and generates a threshold value control signal.


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    Title :

    OVERCURRENT PROTECTION CIRCUIT


    Additional title:

    과전류 보호 회로


    Publication date :

    2021-05-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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