Piezo haptic driver enables tactile feedback to HMIs

The BOS1211 is a scalable, low-power piezo haptic controller based on patented CapDrive technology.

It allows automotive original equipment manufacturers (OEMs) and tier-one suppliers to add highly responsive, tactile feedback to buttons and sliders on displays and other human-machine interfaces (HMI).

This piezo haptic driver is designed to drive TDK's PowerHap 120V piezo actuators or similar loads with up to 120V HD haptic low-distortion waveforms.

The BOS1211 features a piezo sensing interface that detects pressure on the piezo actuator, plays automatic haptic waveform feedback, and notifies the user.

Piezo haptic buttons, supported by the BOS1211, improve on older haptic technologies, offering faster response times and an extended frequency range compared to linear resonant actuators (LRAs).

Tactile feedback from Piezo haptic buttons allows drivers to confirm button presses without looking away from the road, improving driver safety.

The BOS1211 runs waveforms through an integrated digital front-end and SPI interface. The interface integrates 1024-sample internal FIFO, a waveform synthesizer, and 2 KBytes of RAM for waveform memory.

This Piezo Haptic Driver is delivered in a wettable flank QFN-24 package, providing a space-efficient solution for haptic applications. The BOS1211 is AEC-Q100 Grade 2 qualified.