Title :
Zero-voltage switching in a constant frequency digitally controller resonant DC-DC power converter
Author :
Hayes, J.G. ; Mohan, N. ; Henze, C.P.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
A series-resonant DC-DC converter operating at a constant frequency above its resonant frequency is analyzed and experimentally tested. Using a state-plane analysis, the range of load for a given set of circuit parameters over which zero-voltage zero-current turn-on and zero-voltage turn-off (using lossless capacitive snubbers) are calculated and verified on a test circuit. A digital controller, designed previously for a quantized duty-ratio control in PWM DC-DC converters and now available in a gate array, is used to implement the constant-frequency control of the output voltage
Keywords :
digital control; frequency control; power convertors; pulse width modulation; switching; PWM; constant-frequency control; digital controller; digitally controller resonant DC-DC power converter; gate array; lossless capacitive snubbers; quantized duty-ratio control; state-plane analysis; zero-voltage switching; Circuit testing; DC-DC power converters; Digital control; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Resonant frequency; Snubbers; Voltage control; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1988. APEC '88. Conference Proceedings 1988., Third Annual IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/APEC.1988.10584
