DRV10983: The issue of DRV10983 EVM for motor control

jack Tsai

Part Number: DRV10983
Other Parts Discussed in Thread: , MCF8316A

Hi Team,

The customer uses the DRV10983EVM control color wheel motor.
The circuit architecture and DRV10983EVM GUI settings is shown as below:

The customer measured that the FG signal output jitter(278us) of DRV10983 is much larger than the jitter(4.4us) of the input PWM signal.
The measured signal waveforms are shown as below

What other DRV10983 parameters can I adjust to make the jitter of the FG signal smaller and make the Motor speed more stable?

BR,

Jack

8 months ago

0 Vishnu Balaraj 8 months ago

TI__Mastermind 24405 points

I don't think DRV10983 is suited for color wheel applications as this device does not have speed loop. We have used MCF8316A to spin color wheel motors and this device works great as it implements FOC algorithm and the speed jitter is also below 10 us.

There is a similar question posted in below link.

https://e2e.ti.com/support/motor-drivers-group/motor-drivers---internal/f/motor-drivers---internal-forum/1280150/drv10983evm-speed-control-error-operation-in-digital-pwm-mode

Can you check if both are same? If so, then lets just have our conversations in one thread.