SLOS751D March 2013 – November 2018 DRV2667
There are several key specifications to consider when choosing a piezo actuator for haptics, such as dimensions, blocking force, and displacement. However, the key electrical specifications from the driver perspective are voltage rating and capacitance.
At the maximum frequency of 500 Hz, the device is optimized to drive up to 50 nF at 200 VPP, that is the highest voltage swing capability. It drives larger capacitances if the programmed boost voltage is lowered and/or the user limits the input frequency range to lower frequencies (e.g. 300 Hz).