The present invention relates to a circuit configuration for preventing an inrush current, applicable to various DC power supply circuits including a power supply circuit for vehicle electronic equipment. More specifically, the present invention relates to a circuit for preventing an inrush current generated during power supply of a load having independent power switchgear, capable of preventing damage to a power control circuit and an internal circuit due to the inrush current generated according to a capacitor having a high value generally attached to a power source unit of an electrical device (load side) consuming a DC current, and providing an effect of preventing the inrush current even when ON/OFF states of the power source is independently switched by the load of the electrical device attached thereto with its own power switchgear. The circuit for preventing the inrush current generated during power supply of the load having the independent power switchgear includes an inrush current limitation circuit unit for supplying a power of a power source unit to the load, wherein by the inrush current limitation circuit unit, a predetermined limitation current is supplied, and a normal current is applied in a predetermined time.
본 발명은 차량 전장품 전원공급 회로를 비롯한 다양한 직류 전원공급회로에 적용가능한 돌입전류 방지 회로구성에 관한 것으로, 보다 상세하게는 직류전류를 소모하는 전기장치(부하측)의 전원부에는 일반적으로 높은 값의 캐패시터(Capacitor)가 부착되는데 본 발명은 이에 따라 발생하는 돌입전류로 인한 전원 제어회로 및 내부 회로의 손상을 방지하는 것이며, 자체의 전원개폐장치가 부착된 전기장치 부하에 의해 전원 ON/OFF를 독립적으로 수행할 경우에도 돌입전류 방지효과가 있는 독립적인 전원개폐장치를 가진 부하의 전원공급 시 발생하는 돌입전류 방지회로에 관한 것이다. 이와 같은 본 발명의 특징은 전원부의 전원을 부하로 공급하는 돌입전류제한회로부를 포함하고, 상기 돌입전류제한회로부에 의하여, 소정의 제한전류를 공급하고 소정 시간 경과 후 정상전류를 인가하도록 구비되는 것을 특징으로 한다.
Inrush current limiting circuit even for a load with power switch
독립적인 전원개폐장치를 가진 부하의 전원공급 시 발생하는 돌입전류 방지회로
2016-12-23
Patent
Electronic Resource
Korean
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Inrush current limiting circuit even for a load with power switch
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