Patent ID: 11955884
Assignee: RICHTEK TECHNOLOGY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. The resonant switching power converter circuit according to claim 9, wherein the plurality of capacitors further include an output capacitor coupled to the first capacitor, the second capacitor and the third capacitor, and wherein the predetermined voltage includes a first predetermined voltage and a second predetermined voltage; wherein in the pre-charge mode, the control circuit executes at least one of the following operations:
(1) turning ON the fourth switch, the fifth switch, the seventh switch, the ninth switch and the tenth switch, and controlling the pre-charge circuit to charge each of the output capacitor, the third capacitor and the second capacitor to the first predetermined voltage;
(2) turning ON the second switch and the tenth switch, and controlling the pre-charge circuit to charge the third capacitor to the first predetermined voltage;
(3) turning ON the fifth switch, the seventh switch and the eighth switch, and controlling the pre-charge circuit to charge each of the second capacitor and the first capacitor to the first predetermined voltage; or
(4) turning ON the eighth switch, and controlling the pre-charge circuit to charge the first capacitor to the second predetermined voltage.