公开(公告)号：US12301124B2

公开(公告)日：2025-05-13

申请号：US17970897

申请日：2022-10-21

Applicant: NANOWATT INC.

Inventor： Wenbo Liang ,  Edward Er Deng ,  Ying Li ,  San Hwa Chee

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/36 ,  H02M7/217 ,  H02M1/00

Abstract: An AC-DC converter includes an AC voltage source, a rectifier, and a rectifier control circuit. The rectifier includes a field effect transistor (FET) having a source, a drain, and a gate. The drain of the FET is coupled to the AC voltage source, and the source is coupled to ground. The rectifier control circuit is coupled to the gate of the FET. The rectifier control circuit is configured to provide a ramp voltage to regulate the FET after the AC voltage source is turned off.