Texas Instruments DRV201 Evaluation Module DRV201EVM DRV201EVM Scheda Tecnica
Codici prodotto
DRV201EVM
User's Guide
SLVU528 – March 2012
DRV201 Evaluation Module
Figure 1. DRV201EVM
The DRV201EVM is an evaluation board to assist in evaluating the DRV201 IC as a voice coil motor
(VCM) driver for camera auto focus.
(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 I
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 I
2
C register. Device has integrated sense
resistor for current regulation and the current can be controlled through I
2
C.
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.
compensation function. Ringing compensation reduces the needed time for auto focus significantly. The
device has also VCM short and open protection functions.
The following related documents are available for download through the Texas Instruments web site at
1. DRV201 Voice Coil Motor Driver for Camera Auto Focus (
2. USB Interface Adapter Evaluation Module (
1
SLVU528 – March 2012
DRV201 Evaluation Module
Copyright © 2012, Texas Instruments Incorporated