RESONANT POWER SUPPLY DEVICE
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United States of America Patent
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Issued Date -
Jun 1, 2017
app pub date -
Nov 9, 2016
filing date -
Nov 26, 2015
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Abstract
A resonant power supply includes a full bridge circuit having a first switching leg and a second switching leg and a control unit that controls operations of a first upper arm switching device and a first lower arm switching device constituting the first switching leg, and a second upper arm switching device and a second lower arm switching device constituting the second switching leg and feeds power to a load from a DC power supply via the full bridge circuit. The control unit controls the full bridge circuit so as to have a phase difference between a turn-off of the first upper arm switching device and the turn-off of the second lower arm switching device, and increases the phase difference in accordance with increase of a switching frequency of the full bridge circuit.
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