Resonant forward converter
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United States of America Patent
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-
Nov 29, 1988
Grant Date -
N/A
app pub date -
Jun 22, 1987
filing date -
Jun 22, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A resonant forward converter at a switching frequency of 10 MHz provides a small volume point-of-load converter for distributed power systems. The leakage inductance of a transformer is made negligibly small relative to the magnetizing inductance of the transformer. This enables a resonant controllable switch on the primary side of a transformer and a secondary side rectified diode to be switched either on or off at the same time. The capacitance across the primary side switch and the secondary side diode rings with a resonant inductor connected in parallel with the transformer. Both the switch and diode, therefore, have zero voltage switching transitions. Further, the resonant inductor being connected in parallel with the transformer provides a resonant ring that is independent of load.
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