Zero voltage switching buck derived converter
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United States of America Patent
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-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Jun 2, 1999
filing date -
May 3, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A buck derived isolated DC-DC converter includes a half or full bridge of switching devices which are asymmetrically controlled so that top and bottom switches are opened and closed at mutually exclusive times. Primary side and secondary side DC blocking capacitor(s) and a small valued inductor are placed in series with an isolation transformer. A single secondary rectification uncontrolled switch and inductor-capacitor output filter are included. Additionally a voltage clamping circuit is added across the rectifier which includes an active switch which also may be connected to a tap on the output inductor.
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