BUCK POWER CONVERTER
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United States of America Patent
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Issued Date -
Jun 12, 2014
app pub date -
Dec 12, 2012
filing date -
Dec 12, 2012
priority date (Note) -
Abandoned
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Abstract
A buck power converter includes a power transistor, an inductor, a first diode, and an anti-ringing circuit. The power transistor has a first terminal, a second terminal, and a control terminal. The first terminal of the power transistor receives an input voltage, and the control terminal of the power transistor receives a pulse width modulation (PWM) signal. The anti-ringing circuit detects a detection voltage on the second terminal of the power transistor. According to the detection voltage, the anti-ringing circuit provides at least one second diode serially coupled between the second terminal of the power transistor and a reference ground terminal in a forward-biased manner, so as to clamp a voltage swing of the detection voltage.
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