- Patent Title: Switched mode converter with variable common mode voltage buffer
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Application No.: US15168680Application Date: 2016-05-31
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Publication No.: US09985587B2Publication Date: 2018-05-29
- Inventor: Zhaohui He , Eric J. King , Siddharth Maru , John L. Melanson
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: US TX Austin
- Assignee: Cirrus Logic, Inc.
- Current Assignee: Cirrus Logic, Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03F3/217
- IPC: H03F3/217 ; H03F1/32 ; H03F3/183 ; H03F3/45 ; H04R3/00 ; H03F1/02

Abstract:
A switching power stage for producing a load voltage at a load output of the switching power stage, wherein the load output comprises a first load terminal having a first load voltage and a second load terminal having a second load voltage such that the load voltage comprises a difference between the first and the second load voltages, that may include: a power converter comprising a power inductor and a plurality of switches, wherein the power converter is configured to drive a power converter output terminal; a linear amplifier configured to drive a linear amplifier output terminal; and a controller for controlling the plurality of switches and the linear amplifier in order to generate the load voltage as a function of an input signal to the controller such that energy delivered to the load output is supplied predominantly by the power converter.
Public/Granted literature
- US20170207755A1 SWITCHED MODE CONVERTER WITH VARIABLE COMMON MODE VOLTAGE BUFFER Public/Granted day:2017-07-20
Information query
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