Current-fed, forward converter switching at zero current
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United States of America Patent
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Jun 23, 1987
Grant Date -
N/A
app pub date -
Nov 6, 1985
filing date -
Nov 6, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A single-ended, zero-current switching, forward converter circuit converts power from a current source to a voltage load in a succession of energy transfer cycles using a transformer constructed to have an effective leakage inductance L.sub.1e, a capacitor (C) in series with the primary winding of the transformer, a switching device also in series with the primary winding, a unidirectional conducting device connected in series with the secondary winding in an orientation to conduct when the switching device is conducting, and a controller that selectively closes and opens the switching device to transfer energy from the capacitor via the effective primary leakage inductance to the load during an energy transfer cycle having a characteristic time scale determined by L.sub.1e and C.
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