Drive circuit for zero-voltage switching power converter with co

Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter

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363 98, 363132, 307239, 307571, H02M 3335

Patent

active

053051912

ABSTRACT:
A drive arrangement and operative scheme for the power switching transistors of a half-bridge power drives the two power switching transistors with unequal duty cycles having conducting durations such that the sum of the conduction intervals substantially equals the combined switching period of the two power switching transistors. The conducting intervals are separated by very short dead time intervals controlled by the differing turn-on and turn-off times of the two power switching transistors. The short interval between alternate conductions of the two power switching transistors is sufficient to allow zero voltage turn on of the power switching transistors but short enough to minimize power loss and conducted noise.

REFERENCES:
patent: 4814962 (1989-03-01), Magalhaes
patent: 4860189 (1989-08-01), Hitchcock
patent: 4901216 (1990-02-01), Small
"Twelfth International Telecommunications Energy Conference", Intellec '90, Oct. 21-25, 1990, pp. i-185.

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