The TFA9914 is a high-efficiency 10 V boosted Class-D haptic Driver IC with a sophisticated smart haptic and LRA protection algorithm. It can deliver up to 5.6 W (AVG) output power to an 8 Ohm LRA, at a battery supply voltage of 4.0 V.
The internal boost converter raises the supply voltage to 10 V, providing ample headroom for major improvements in LRA performance of clean haptic effects and audio display features. Unlike the competing solutions, the adaptive haptic boost algorithm uses feedback to accurately calculate both the temperature, the excursion, and resonance frequency. This allows the TFA9914 to adapt to changes in the LRA conditions. It enables audio display, audio to haptic, and short click use cases.