Tool/software:
Hi Sir,
My customer would like to use DRV8231A to control the shutter motor on the digital camera.
But they found the sawtooth wave in the output current, which will cause abnormal shutter operation.
Since the competitor IC G2015 witch can provide a flat square wave in output current, Can DRV8231A provide the same output current with G2015? (refer to the below test report)
If DRV8231A cannot support it, please advise a correct solution. Thanks!
The below is design condition:
Shutter driver current: need constant current, 270mA(+/- 5%).
Resistance of Lens coil for shutter: 22 Ohm(+/- 10%).
Vm = 7.27V = 0.27*(Rdson+Rrnf+Rmotor)
DRV8231A and G2015 test report: DRV8231A and G2015 test report.xlsx
G2015 datasheet: 1212.G2015.pdf
The control current waveform on shutter motor module.