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

Claim 41:
42. The resonant switching power converter circuit according to claim 35, wherein the resonant switching power converter circuit comprises at least two resonant capacitors including a first resonant capacitor and a second resonant capacitor, and wherein the predetermined voltage includes a first predetermined voltage, a second predetermined voltage and a third predetermined voltage, and wherein the plurality of switches include the first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, and a tenth switch;
wherein in the pre-charge mode, the control circuit executes at least one of the following operations:
(1) turning ON the sixth switch, and controlling the pre-charge circuit to charge the first resonant capacitor to the first predetermined voltage;
(2) turning ON the second switch and the eighth switch, and controlling the pre-charge circuit to charge the non-resonant capacitor to the second predetermined voltage; or
(3) turning ON the second switch, the third switch and the tenth switch, and controlling the pre-charge circuit to charge the second resonant capacitor to the third predetermined voltage.