Title :
A compact DC-to-DC power converter for distributed power processing
Author :
Lo, D. ; Henze, C. ; Mulkern, J.
Author_Institution :
Unisys Corp., St. Paul, MN, USA
Abstract :
A compact (55 W/in/sup 3/), efficient (86% power train), 1 MHz switch-mode, DC-to-DC power converter contained in a 2 in by 2 in by 0.25 in, 1 in/sup 3/ inch package is presented. The converter developed for on-card applications in distributed power processing systems, uses pulse-width modulation at a constant frequency of 1 MHz (2 MHz ripple frequency) and zero-voltage resonant transition switching. The interleaved forward topology, steady-state analysis, capacitor substrate, planar printed-wiring-board transformer, packaging, electrical performance, power loss analysis, thermal analysis, reliability, and efficiency and power density improvements are described.<>
Keywords :
packaging; power convertors; pulse width modulation; reliability; transformers; 1 MHz; PWM; capacitor substrate; distributed power processing systems; efficiency; electrical performance; interleaved forward topology; packaging; planar printed-wiring-board transformer; power density; power loss analysis; pulse-width modulation; reliability; steady-state analysis; switch-mode DC-DC power convertor; thermal analysis; zero-voltage resonant transition switching; DC-DC power converters; Frequency conversion; Packaging; Performance analysis; Pulse modulation; Pulse transformers; Pulse width modulation converters; Resonance; Resonant frequency; Switching converters;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/APEC.1990.66395
