Low-switching loss DC-DC converter

Details Low-switching loss DC-DC converter Low-switching loss DC-DC converter

1990-02-06

1991-02-05

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363 20, 363 95, 363 97, 363131, H02M 324

Patent

active

049910752

ABSTRACT:
A DC-DC converter comprises a switching element having a rise time t.sub.on and a fall time t.sub.off ; a control device for controlling the switching operation of the switching element; a transformer having a primary winding and a secondary winding, the primary winding being connected to a DC power source through the switching element, and having an open inductance L.sub.M ; an inductance coil having an inductance L connected to the secondary winding of the transformer; and a rectifying device for rectifying the output from the secondary winding of the transformer; assuming that the voltage applied to the primary winding of the transformer is E, the load current flowing through the transformer is I.sub.D, and the sum of the stray capacitance of the switching element and the distributed capacity of the windings of the transformer is C1, the following relational expressions being established:

REFERENCES:
patent: 4403269 (1983-09-01), Carroll
patent: 4415959 (1983-11-01), Vinciarelli
patent: 4674019 (1987-06-01), Martinelli
patent: 4675797 (1987-06-01), Vinciarelli
patent: 4709316 (1987-11-01), Ngo et al.
patent: 4788634 (1988-11-01), Schlecht et al.

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