Patent ID: 11916477
Assignee: WUXI CHIPOWN MICROELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The voltage conversion circuit according to claim 1, wherein the second control signal is adapted to control the first MOS transistor to switch on or off: when a voltage on the chip auxiliary power pin is less than the working voltage of the driving circuit, the second control signal controls the first MOS transistor to switch on, and the chip power pin provides the working voltage for the driving circuit through the first MOS transistor; and when the voltage on the chip auxiliary power pin reaches the working voltage of the driving circuit, the second control signal controls the first MOS transistor to switch off, and the chip auxiliary power pin provides the working voltage for the driving circuit.