High-frequency DC-DC power converter with zero-voltage switching

Details High-frequency DC-DC power converter with zero-voltage switching High-frequency DC-DC power converter with zero-voltage switching

1988-06-27

1989-07-04

Beha Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, H02M 3335

Patent

active

048456055

ABSTRACT:
A high-frequency DC-DC Converter uses a single, primary-side power switching transistor and all of the circuit parasitic elements to achieve high efficiency and small size while operating from no-load to full-load with a relatively narrow operating frequency variation of only about 1.35:1 maximum, and with a reasonably low peak switching device voltage which is only about 3 times the input voltage. The energy stored in the switching device output capacitance is not lost during each high-frequency cycle, but is resonated back to the supply or load circuit. A single-ended-parallel, multi-resonant-converter (SEP-MRC) utilizes a control circuit for controlling the conduction, or "on", time of the single primary-side device, to adjust and regulate the load voltage.

REFERENCES:
patent: 4449174 (1984-05-01), Ziesse
patent: 4605999 (1986-08-01), Bowman et al.
patent: 4672303 (1987-06-01), Newton
patent: 4685041 (1987-08-01), Bowman et al.
patent: 4720668 (1988-01-01), Lee et al.
K-H Liu et al., "Zero-Voltage switching Technique in DC/DC Converters", IEEE 1986 PESC Record pp. 58-70 (Jun. 1986).
R. Redl et al., "Class-E Resonant Regulated DC/DC Power Converters: Analysis of Operation, and Experiment Results at 1.5 MHz.", IEEE 1983 PESC Record pp. 50-60 (Jun. 1983).
W. A. Tabisz et al., "Application of a Novel, Multi-Resonant Switch in High-Frequency DC/DC Converts", VPI Partnership Conference (1987).

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