Amplifier with charge-pump generated local supplies

Details Amplifier with charge-pump generated local supplies Amplifier with charge-pump generated local supplies

2007-10-23

2007-10-23

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C330S253000

Reexamination Certificate

active

10327709

ABSTRACT:
An amplifier system includes a follower-type output stage that is driven by a pre-driver circuit. The follower-type output stage that is operated from VCC and GND (or VEE) power supplies. The pre-driver circuit for the follower output stage is operated from local power supplies corresponding to VHI and VLO. A charge-pump circuit generates the VHI power-supply such that VHI is above VCC. Another charge-pump circuit generates the VLO power-supply such that VLO is below GND (or VEE). The output stage delivers current to a load from the VCC and GND (or VEE) power supplies such that the output stage has increased power efficiency.

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