Bridge driver for a switching voltage regulator which is operable to soft-switch and hard-switch
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United States of America Patent
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Oct 6, 2015
Grant Date -
Jan 2, 2014
app pub date -
Jun 27, 2012
filing date -
Jun 27, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Described is an apparatus which comprises: a low-side switch coupled to an output node for providing regulated voltage supply; and a first driver operable to cause the low-side switch to turn off when the output node rises above a first transistor threshold voltage. Described is also a voltage regulator which comprises: a signal generator to generate a pulse-width modulated (PWM) signal; a bridge having a low-side switch coupled to an output node for providing regulated voltage supply according to the PWM signal; a first driver operable to cause the low-side switch to turn off when the output node rises above a first transistor threshold voltage; and a bridge controller to provide control signals to the first driver. The voltage regulator may operate without diode clamps and its operation is self-timed. The voltage regulator also provides tolerance against process variation.
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