Current calibration method and device, driving chip, electronic equipment and storage medium
By adjusting the output current of the voice coil motor driver chip through a self-calibration method, the problem of output current offset is solved, and self-calibration without factory calibration is achieved, which improves the accuracy and stability of motor drive and adapts to different ambient temperatures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI AWINIC TECH CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the output current of voice coil motor driver chips is offset, requiring traditional factory calibration methods that incur significant testing time and costs.
The self-calibration method outputs a reference current based on the reference current value, converts the calibration code into a calibration current, detects the relationship between the output current and the reference current, and adjusts the calibration code until the output current equals the reference current value, thereby achieving self-calibration of the output current.
It achieves self-calibration of output current, eliminates offset, eliminates the need for factory calibration, avoids testing time and costs, adapts to different ambient temperatures, and improves the accuracy and stability of motor drive.
Smart Images
Figure CN122419280A_ABST