Invention Grant
- Patent Title: Power bootstrapping for lowering quiescent current
- Patent Title (中): 电源自举降低静态电流
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Application No.: US13974352Application Date: 2013-08-23
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Publication No.: US09369036B2Publication Date: 2016-06-14
- Inventor: Eric Martin Hayes , Mark David Rutherford
- Applicant: Broadcom Corporation
- Agency: Brinks Gilson & Lione
- Main IPC: G06F1/00
- IPC: G06F1/00 ; H02M1/36 ; H02M3/156 ; H02M1/00

Abstract:
A circuit includes a switching regulator that produces a first voltage supply output and that includes an operational supply input. The operational supply input may provide power for running the logic in the switching regulator. The circuit also includes a linear regulator that produces a second voltage supply output. A control circuit accepts the first voltage supply output and the second voltage supply output and includes a power output connected to the operational supply input. The control circuit is configured to pass the second voltage supply output to the power output until the first voltage supply output is established. After the first voltage supply is established, the control circuit instead passes the first voltage supply output to the power output through the control circuit. The first voltage supply output may also then provide power to the circuitry that would otherwise have been powered by the linear regulator.
Public/Granted literature
- US20150054340A1 Power Bootstrapping for Lowering Quiescent Current Public/Granted day:2015-02-26
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