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DRV2605L: Haptics Effect Recommendation

Chuchen Wang
Expert 3470 points
Part Number: DRV2605L
Other Parts Discussed in Thread: DRV2625

Hi,

My customer purchased a DRV2605L to evaluate our haptics solution.  Below is their feedback:

The feel of the feedback that is on the Iphone 10 and Apple Watch ( sharp , strong , short~100-200ms) is  what we like to try and replicate.

The eval. board does not appear to have a example close enough to this. The eval. board LRA device is what we would like to use to mimic this effect.

Any recommendations/support you could give us to accomplish this?

Is there a particular built-in effect that may mimic their requirement?  Or is there another device or EVM you'd recommend?

Thanks,

Chuchen

The feel of the feedback that is on the Iphone 10 and Apple Watch ( sharp , strong , short~100-200ms) is  what we like to try and replicate.

 

The eval. board does not appear to have a example close enough to this. 

 

The eval. board LRA device is what we would like to use to mimic this effect. Any recommendations/support you could give us to accomplish this?

  • 0
    TI__Genius 10852 points
    Hi Chuchen,

    Creating this type of effect requires a high quality haptic system. A sharp haptic effect would be much shorter than 100ms. I believe the waveform should be around 20ms. You can achieve higher acceleration clicks using the DRV2625 and a high quality LRA.
    You can get close using the DRV2605L in conjunction with a high quality LRA. You will need to adjust the registers according to the LRA that is being used. This requires running the calibration routine, and setting the appropriate waveform. I would suggest waveform 0x04 and change the ODT setting to 0xFF or 0xFE.