- Patent Title: Over current protection with improved stability systems and methods
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Application No.: US16209898Application Date: 2018-12-04
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Publication No.: US11258250B2Publication Date: 2022-02-22
- Inventor: Dan Shen , Balakishan Challa , Lorenzo Crespi
- Applicant: SYNAPTICS INCORPORATED
- Applicant Address: US CA San Jose
- Assignee: SYNAPTICS INCORPORATED
- Current Assignee: SYNAPTICS INCORPORATED
- Current Assignee Address: US CA San Jose
- Agency: Paradice & Li LLP
- Main IPC: H02H9/02
- IPC: H02H9/02 ; H02H3/087

Abstract:
Systems and methods are provided for improved stability of driver amplifiers. In one example, a system includes an NMOSFET power device operable to generate a current signal at a drain terminal. The system further includes a current comparison amplifier operable to amplify a difference signal comprising a difference between a replica current signal of the NMOSFET power device and a reference current signal to drive a current comparison amplifier voltage output signal. The system further includes a PMOSFET clamp device comprising a source terminal coupled to a gate terminal of the NMOSFET power device operable to limit a voltage at the gate terminal of the NMOSFET power device responsive to the current comparison amplifier voltage output signal.
Public/Granted literature
- US20200176978A1 OVER CURRENT PROTECTION WITH IMPROVED STABILITY SYSTEMS AND METHODS Public/Granted day:2020-06-04
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