公开(公告)号：US10103634B2

公开(公告)日：2018-10-16

申请号：US15064687

申请日：2016-03-09

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jianhong Zeng ,  Chao Yan ,  Haoyi Ye ,  Peiqing Hu

IPC: H02M3/158 ,  H02M1/42 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00

Abstract: A power converter device, includes switching devices and a controller, to realize conversion between power supplies by controlling on and off the switching devices via the controller. The switching devices include: at least one normally-on type switching device and at least one normally-off type switching device both having an operation frequency greater than 1 kHz and connected in series. The controller outputs a first and second control signal to correspondingly control the normally-on type switching device and the normally-off type switching device to control the normally-off type switching device to be turned on after the normally-on type switching device to be turned off. The present disclosure uses the normally-off type switching device originally disposed in the circuit, having a voltage blocking ability, to realize directly usage of the normally-on type switching device to improve efficiency and power density of switching power supply.