DRV201A评估模块

GY@艳

DRV201A评估模块以帮助评估DRV201A IC的音圈电机（VCM）驱动程序，摄像头支持自动对焦。The DRV201AEVM is an evaluation board to assist in evaluating the DRV201A IC as a voice coil motor (VCM) driver for camera auto focus.The device is an advanced voice coil motor driver for camera auto focus. It has an integrated D/A converter for setting the VCM current. VCM current is controlled with a fixed frequency PWM controller or a linear mode driver. Current generation can be selected via I2C register. Device has integrated sense resistor for current regulation and the current can be controlled through I2C.When changing the current in the VCM the lens ringing is compensated with an advanced ringing compensation function. Ringing compensation reduces the needed time for auto focus significantly. The device has also VCM short and open protection functions.