Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1989-11-14
1990-09-25
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 20, 323222, 323224, 323282, 323250, H02M 3335
Patent
active
049597647
ABSTRACT:
A two switch, DC/DC converter provides sufficient inductive energy storage at the termination of the "on" period of each switch to alter the charge on the intrinsic and stray capacitance of the combination of switches producing zero voltage across the alternate switch prior to its turn on. A short dead-band between the turn on pulses provided by the control circuit allows time for this transition. Thus the energy stored in the capacitance of the switches is returned to the source and load rather than being dissipated in the switching devices. This greatly improves the efficiency of the converter particularly when operating at high frequency. The unique topology of the converter provides other new and useful characteristics in addition to zero voltage switching capaibility such as operation at constant frequency with pulse-width-modulation for regulation, quasi-square wave output current, and the ability to integrate the magnetic elements with or without coupling.
REFERENCES:
patent: 4415959 (1983-11-01), Vinciarelli
patent: 4441146 (1984-04-01), Vinciarelli
patent: 4672303 (1987-06-01), Newton
patent: 4720668 (1988-01-01), Lee et al.
patent: 4727308 (1988-02-01), Huljak
patent: 4734839 (1983-03-01), Barthold
patent: 4857822 (1989-08-01), Tabisz et al.
"A 14 MHz 100-Watt Class E Resonant Converter: Principles, Design Considerations and Measured Performance", R. Redl and N. Sokal, Power Electronics Conference, Oct. 7, 1986, pp. 1-10.
"Switching Supplies: Changing with the Times", J. Bassett, Electronics, Jan. 1988, pp. 145-150.
Computer Products Inc.
Wong Peter S.
LandOfFree
DC/DC converter switching at zero voltage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC/DC converter switching at zero voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC/DC converter switching at zero voltage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-332522