Single-chip industrial piezo driver and evaluation board

The Texas Instruments (TI) DRV2700 industrial piezo driver is now available from Mouser stock. The single-chip piezo driver features an integrated 105V boost switch, power diode, and fully-differential amplifier. The versatile device is capable of driving both high-voltage and low-voltage piezoelectric loads. The input signal can be either differential or single-ended and AC or DC coupled. The DRV2700 supports four GPIO-controlled gains: 28.8dB, 34.8dB, 38.4dB, and 40.7dB. The boost converter architecture does not allow the demand on the supply current to exceed the limit set by the R(REXT) resistor which allows the user to optimize the DRV2700 circuit for a given inductor based on the desired performance requirements. Additionally, the boost converter is based on a hysteretic architecture to minimize switching losses and, therefore, increase efficiency. Also available the DRV2700EVM evaluation module (EVM) is intended for high-voltage piezo applications typically used in industrial applications. The differential 200Vpp output capability, as well as the 100V single ended output, can be evaluated using this evaluation module. The available pin breakouts in addition with the on board MSP430 allows for prototyping into already existing systems.