US 12,289,057 B2
Circuits and methods for controlling bidirectional CLLC converters
Chen Wei, Shenzhen (CN); Dongfeng Zhu, Shenzhen (CN); Haitao Xie, Shenzhen (CN); Ying Liu, Shenzhen (CN); and Jianwen Shao, Cary, NC (US)
Assigned to Wolfspeed, Inc., Durham, NC (US)
Appl. No. 17/788,002
Filed by Wolfspeed, Inc., Durham, NC (US)
PCT Filed Dec. 24, 2019, PCT No. PCT/CN2019/127970
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2021/127995, PCT Pub. Date Jul. 1, 2021.
Prior Publication US 2023/0040992 A1, Feb. 9, 2023
Int. Cl. H02M 3/335 (2006.01); H02J 7/02 (2016.01)
CPC H02M 3/33584 (2013.01) [H02J 7/02 (2013.01); H02M 3/33573 (2021.05); H02J 2207/20 (2020.01)] 48 Claims
OG exemplary drawing
 
1. A bidirectional power converter comprising:
a first switch circuit coupled to a second switch circuit via a transformer,
wherein the first switch circuit is configured to transfer power to the second switch circuit during a charging mode,
wherein the second switch circuit is configured to transfer power to the first switch circuit during a discharging mode,
wherein the first switch circuit is configured to operate in a half bridge configuration during a first portion of the charging mode, and in a full bridge synchronous rectifier configuration during a first portion of the discharging mode,
wherein the second switch circuit is configured to operate in a half bridge configuration during the first portion of the discharging mode, and
wherein a first switch of the first switch circuit is configured to be active during at least part of the first portion of the discharging mode.