Title :
Constant frequency ZVS converter with integrated magnetics
Author_Institution :
Comput. Products-Power Conversion, Fremont, CA, USA
Abstract :
The author introduces a high-frequency DC-DC converter which provides zero-voltage-switching (ZVS) and allows control of the output by pulse width modulation (PWM) at constant frequency. The topology is very tolerant to leakage inductance in the isolating transformer, and it is possible to combine the transformer and filter choke into a single integrated magnetic assembly yielding several additional benefits. The converter has been operated with ZVS to reduce losses at the switching transition, and this has allowed high-frequency operation even with high frequency and high input voltage. A control scheme has been defined whereby constant frequency operation and PWM produce a linear control to output transfer function with minimal interaction of load
Keywords :
magnetic circuits; power convertors; pulse width modulation; constant frequency; filter choke; high-frequency DC-DC converter; integrated magnetics; isolating transformer; leakage inductance; linear control; minimal load interaction; output transfer function; pulse width modulation; topology; zero-voltage-switching; DC-DC power converters; Filters; Frequency conversion; Inductance; Magnetic separation; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Topology; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1992. APEC '92. Conference Proceedings 1992., Seventh Annual
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0485-3
DOI :
10.1109/APEC.1992.228343
