Invention Publication
- Patent Title: SLEW CONTROL FOR VARIABLE LOAD PULSE-WIDTH MODULATION DRIVER AND LOAD SENSING
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Application No.: US17540648Application Date: 2021-12-02
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Publication No.: US20230178279A1Publication Date: 2023-06-08
- Inventor: Chandra B. PRAKASH , Ramin ZANBAGHI
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: GB Edinburgh
- Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee Address: GB Edinburgh
- Main IPC: H01F7/06
- IPC: H01F7/06 ; H02K33/00

Abstract:
A system may include an electromagnetic load, a driver configured to drive the electromagnetic load with a driving signal, and a processing system communicatively coupled to the electromagnetic load and configured to, during a haptic mode of the system couple a first terminal of the electromagnetic load to a ground voltage and cause the driving signal to have a first slew rate, and during a load sensing mode of the system for sensing a current associated with the electromagnetic load, couple the first terminal to a current-sensing circuit having a sense resistor coupled between the first terminal and an electrical node driven to a common-mode voltage and cause the driving signal to have a second slew rate lower than the first slew rate.
Public/Granted literature
- US11854738B2 Slew control for variable load pulse-width modulation driver and load sensing Public/Granted day:2023-12-26
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