Power converter with snubber
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United States of America Patent
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Mar 29, 2011
Grant Date -
Oct 29, 2009
app pub date -
Jun 30, 2009
filing date -
Jan 12, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A buck or boost converter, which includes a first inductor, a controlled switch, a main diode, and an output capacitor, also includes a snubber circuit to reduce losses. The snubber circuit includes a second inductor in a path in series with the switch and main diode of the converter, a series-connected resistor and diode connected directly in parallel with the second inductor, and a capacitance in parallel with the main diode and which can be constituted partly or entirely by parasitic capacitance of the main diode.
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