Resonant power converter with current sharing among multiple transformers
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United States of America Patent
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Apr 25, 1989
Grant Date -
N/A
app pub date -
Jan 4, 1988
filing date -
Jan 4, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A resonant power converter has a plurality of transformers, each having a primary winding and a secondary winding coupled thereto; the primary windings of all of the plurality of transformers are connected in series. The plurality of transformer secondary circuits are effectively connected in parallel, for current addition. a relatively small portion of the resonance capacitor is placed across each primary winding to insure a low impedance which causes the secondary-winding-connected rectifiers to commutatively switch substantially independently and share the entire output current substantially equally. A plurality of lower power transformers are thus utilized to replace a single high power transformer, so that leakage inductance is reduced and a higher operating frequency can be maintained.
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