Voltage regulators with kickback protection

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United States of America Patent

PATENT NO 9847722
SERIAL NO

14867831

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.

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Patent Owner(s)

Patent OwnerAddress
VOLTERRA SEMICONDUCTOR LLC160 RIO ROBLES SAN JOSE CA 95134

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiang, Chiteh San Jose, US 10 80
Lu, Yang Fremont, US 395 2607
Zuniga, Marco A Berkeley, US 83 1809

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