BOOST AND LDO HYBRID CONVERTER WITH DUAL-LOOP CONTROL
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United States of America Patent
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Oct 3, 2019
app pub date -
Mar 28, 2018
filing date -
Mar 28, 2018
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Abstract
A boost and LDO hybrid converter with dual-loop control is disclosed. In some implementations, a hybrid converter includes an inductor having a first terminal to receive an input voltage and a second terminal; an n-type metal oxide semiconductor device (nMOS) having a drain coupled to the second terminal of the inductor; a p-type metal oxide semiconductor device (pMOS) having a gate, a drain, and a source, the source coupled to the second terminal of the inductor; an output capacitor having a first terminal coupled to the drain of the first pMOS; and a controller having a switch driver and a buffer, wherein the controller is configured to use the switch driver to drive the gate of the first pMOS in a boost mode and to use the buffer to drive the gate of the first pMOS in a low drop out (LDO) mode.
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