Invention Grant
- Patent Title: Proportional feedback for reduced overshoot and undershoot in a switched output
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Application No.: US14270319Application Date: 2014-05-05
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Publication No.: US09742399B2Publication Date: 2017-08-22
- Inventor: Dan Shen
- Applicant: Cirrus Logic, Inc.
- 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 ; H03K17/693 ; H02J1/06 ; H03K17/687 ; H04R3/00 ; H02J1/00

Abstract:
Embodiments of apparatuses and methods for proportional feedback for reduced overshoot and undershoot in a switched output are described. An embodiment of an apparatus includes a switching output stage configured to receive an input signal and provide a responsive output signal. The apparatus may also include a pulling circuit coupled to one of the first switching device and the second switching device. The pulling circuit may pull a control voltage of power transistors in the switching output stage to reduce impedance of at least one of the transistors in response to a determination that the output signal at the common output node is outside of a predetermined range of a threshold value. Pulling strength may increase as a voltage difference between the output signal and one of the first supply voltage and the second supply voltage increases.
Public/Granted literature
- US20150318854A1 PROPORTIONAL FEEDBACK FOR REDUCED OVERSHOOT AND UNDERSTOOT IN A SWITCHED OUTPUT Public/Granted day:2015-11-05
Information query
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