Electronic Products & Technology

Piezo haptic driver shrinks BOM cost, hardware footprint

Stephen Law   

Electronics driver haptics piezo

BOREAS TECHNOLOGIES BOS1921 tiny piezo driver delivers autonomous operation and sensing for piezo haptic trackpads in a single chip – freeing PC OEMs from the dedicated electronics that other piezo drivers require for force sensing. This advancement reduces bill of materials (BOM) costs by up to 2x, keeps piezo haptic trackpads thin, improves responsiveness, and provides 15x greater sensing resolution than firm’s first-generation piezo haptic driver BOS1901. Device provides integrated digital front end with 13C/I2C and a waveform synthesizer (WFS)—removes the need for dedicated electronics, e.g., microcontrollers, reducing BOM costs and conserving board space. Device delivers high-resolution piezo sensing, with 7mV sensing resolution, interrupt generation and automatic triggering of haptic feedback. Product provides increased sensitivity and low-latency haptic feedback, requiring 10x less power than competing haptic platforms (saves battery life).

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