Invention Grant
- Patent Title: Switched resistor for switched driver stage feedback loop
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Application No.: US17687679Application Date: 2022-03-07
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Publication No.: US11990870B2Publication Date: 2024-05-21
- Inventor: Peter J. Holzmann
- Applicant: Nuvoton Technology Corporation
- Applicant Address: CN Taiwan
- Assignee: NUVOTON TECHNOLOGY CORPORATION
- Current Assignee: NUVOTON TECHNOLOGY CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H03F3/38
- IPC: H03F3/38 ; H03F1/02 ; H03F3/217

Abstract:
A class-D driver circuit includes a feedback loop including an input integrator stage, a switched modulator, and an output driver stage. A feedback resistor connects an output terminal of the output driver stage with an input node of the input integrator stage to provide a feedback current. The class-D driver circuit also includes a compensation circuit configured to provide a compensation current to an output node of the input integrator stage to relieve a slew rate limitation of the feedback loop, the compensation current having a magnitude based on the magnitude of the feedback current.
Public/Granted literature
- US20230283235A1 SWITCHED RESISTOR FOR SWITCHED DRIVER STAGE FEEDBACK LOOP Public/Granted day:2023-09-07
Information query
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