A power supply circuit (41) includes a first P-channel MOSFET (PMOS 1) and a first voltage applying circuit (71). A first P-channel MOSFET (PMOS 1) is arranged between an in-vehicle power supply (50)and a vehicle device that is a power supply target, and is configured to switch between a power-on state in which power is supplied to the vehicle device and a power-off state in which power supply isinterrupted. The first voltage applying circuit (71) is configured to apply a voltage having a potential lower than that of the in-vehicle power supply (50) to the gate terminal. A state of the firstP-channel MOSFET (PMOS 1) is switched to an energized state, and a voltage having a potential equal to a potential of the in-vehicle power supply (50) is applied to the gate terminal, so that the state of the first P-channel MOSFET (PMOS 1) is switched to an de-energized state.
一种电源电路(41),包括第一P沟道MOSFET(PMOS 1)和第一电压施加电路(71)。第一P沟道MOSFET(PMOS 1)被设置在车载电源(50)与作为供电目标的车辆装置之间,并且被配置成切换向车辆装置供应电力的通电状态和电力供应中断的断电状态。第一电压施加电路(71)被配置成向栅极端子施加具有比车载电源(50)的电位低的电位的电压,使得第一P沟道MOSFET(PMOS 1)的状态切换到通电状态,以及向栅极端子施加具有与车载电源(50)的电位相等的电位的电压,使得第一P沟道MOSFET(PMOS 1)的状态切换到断电状态。
POWER SUPPLY CIRCUIT AND POWER SUPPLY APPARATUS
电源电路和电源装置
2020-10-09
Patent
Electronic Resource
Chinese
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 / B62D MOTOR VEHICLES , Motorfahrzeuge |