Method for driving a resonant converter, and corresponding converter and computer program product
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United States of America Patent
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May 9, 2017
Issued Date -
N/A
app pub date -
Apr 28, 2016
filing date -
Oct 1, 2015
priority date (Note) -
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Abstract
A driving module of a resonant converter receives an enabling signal and a voltage across a switch of a secondary side, and generates a control signal for first and second switches of the secondary side. The driving module cyclically controls switches of a primary full-bridge switching stage and both switches of the secondary side. After a fixed time, the driving module turns off the low-side switch and turns on the high-side switch, waits for a rising edge of the enabling signal, waits for zero current in the secondary side switches, turns off the first switch via the control signal after a variable delay relative to the rising edge of the enabling signal, keeps the second switch on, waits for zero voltage across the first switch, switches back on the first switch via the control signal when the voltage measured across the first switch drops below a variable threshold.
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