Texas Instruments - Versatile integrated industrial piezo driver deals with both low- and high-voltage loads (DRV2700)

Texas Instruments (TI) DRV2700 industrial piezoelectric driver-a single-chip device with integrated 105V boost switch, integrated power diode and integrated fully differential amplifier. The multifunctional device can drive high-voltage and low-voltage piezoelectric loads. The input signal can be differential or single-ended, and can be 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 for supply current to exceed the limit set by the R (REXT) resistor, which allows users to optimize the DRV2700 circuit for a given inductor based on the required performance requirements. In addition, the boost converter is based on a hysteretic architecture, which minimizes switching losses and improves efficiency. Applications include positioning actuators, sounder drivers, inkjet printers, sensors and micropumps.