Patent ID: 9246449
Filing Date: 2016-01-26
CPC Classification: H01L,H03F

Claim Text:
1. A stereo class-D audio amplifier comprising: a plurality of high-side vertical power MOSFETs: a corresponding plurality of low-side vertical power MOSFETs corresponding to each high-side vertical power MOSFET of the plurality of high-side vertical power MOSFETs; an interconnection between each respective high-side vertical power MOSFET and the corresponding low-side vertical power MOSFET forming a respective half-bridge output of the stereo class-D audio amplifier, each of the plurality of high-side vertical power MOSFETs being formed on a first die and each of the corresponding plurality of low-side vertical power MOSFETs being formed on a second die; and a plurality of complementary bootstrap power supply circuits corresponding to each of the plurality of high-side vertical power MOSFETs, each respective complementary bootstrap power supply circuit including a first floating gate buffer connected to a respective high-side vertical power MOSFET of the plurality of high-side vertical power MOSFETs and a second floating gate buffer connected to the corresponding low-side vertical power MOSFET of the corresponding plurality of low-side vertical power MOSFETs.