DRV2625: Optimal Mode for Soothing Haptic Effects

Tool/software:

Hello TI Team,

We are using the DRV2625 with an 80Hz LRA to create a smooth, humming effect with a sine wave envelope via RTP.

We see two options:

1. Closed-Loop: Modulating the target intensity.

2. Open-Loop: Using the sine wave output and modulating its amplitude.

For the best smoothness and stability for this specific application, which mode is officially recommended?

Holly