The DRV2700 device is a single-chip piezo driver with an integrated 105-V boost switch, integrated power diode, and integrated fully-differential amplifier. This 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 device supports four GPIO-controlled gains: 28.8 dB, 34.8 dB, 38.4 dB, and 40.7 dB.
The boost voltage is set using two external resistors. The boost current-limit is programmable through the R(REXT) resistor. 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, this boost converter is based on a hysteretic architecture to minimize switching losses and therefore increase efficiency.
A typical startup time of 1.5 ms makes the DRV2700 device an ideal piezo driver for coming out of sleep quickly. Thermal overload protection prevents the device from damage when overdriven.
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | DRV2700 Industrial Piezo Driver With Integrated Boost Converter datasheet (Rev. B) | 30 Mar 2015 |
| User guide | DRV2700EVM User's Guide (Rev. C) | 05 Jun 2018 | |
| Application note | Piezo Haptics With Integrated Waveforms: DRV2605L-Q1 and DRV2700 | 27 Sep 2017 | |
| Technical article | Four tech trends that improve the driver experience | 06 Jan 2017 | |
| Technical article | Are TI drivers stressing your piezo? | 14 May 2015 | |
| User guide | DRV2700EVM Quick Start Guide | 05 Feb 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | Download |
|---|---|---|
| QFN (RGP) | 20 | View options |
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