DocumentCode
3782304
Title
Adaptive off-time control for variable-frequency, soft-switched flyback converter at light loads
Author
Y. Panov;M.M. Jovanovic
Author_Institution
Power Electron. Lab., Delta Products Corp., Research Triangle Park, NC, USA
Volume
1
fYear
1999
Firstpage
457
Abstract
The soft switching of a flyback converter can be achieved by operating the circuit in the critical conduction mode. However, the critical-mode operation at light loads cannot be maintained due to a very high switching frequency and the loss of the output voltage regulation. A control which regulates the output down to the zero load and maintains soft switching at light loads is proposed. The proposed control scheme was implemented in the 380 V/19 V, 65 W flyback DC/DC converter.
Keywords
"Programmable control","Adaptive control","Lighting control","Switching converters","Voltage control","Detectors","Power semiconductor switches","Signal detection","Frequency","Delay"
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
ISSN
0275-9306
Print_ISBN
0-7803-5421-4
Type
conf
DOI
10.1109/PESC.1999.789046
Filename
789046
Link To Document