05986895 is referenced by 175 patents and cites 6 patents.

Switching losses at high line in variable-input Class-D resonant DC-to-DC power converters regulated by changing the duty cycle of the switching transistors are avoided by making the turn-off time of the discharging switch dependent upon the current in the resonant transformer primary circuit, thereby preserving bidirectional zero-voltage switching. Losses due to asymmetrical high current pulses in one arm of the rectified output can be mitigated by use of MOSFETs as synchronous rectifiers to take the place of rectifying diodes.

Title
Adaptive pulse width modulated resonant Class-D converter
Application Number
9/92425
Publication Number
5986895
Application Date
June 5, 1998
Publication Date
November 16, 1999
Inventor
Chau Hon Yu
Kwai Chung
HK
Wing Ling Cheng
Taipo
HK
Neal George Stewart
Tsuen Wan
HK
Agent
Coudert Brothers
Assignee
Astec International
HK
IPC
H02M 7/537
H02M 3/335
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