Calculation tool
DRV8662
Haptic driver for piezo with integrated 105-V boost converter in QFN package
Data sheet
DRV8662
- High-Voltage Piezo Haptic Driver
- Drives up to 100 nF at 200 V PP and 300 Hz
- Drives up to 150 nF at 150 V PP and 300 Hz
- Drives up to 330 nF at 100 V PP and 300 Hz
- Drives up to 680 nF at 50 V PP and 300 Hz
- Differential Output
- Integrated Boost Converter
- Adjustable Boost Voltage
- Adjustable Current Limit
- Integrated Power FET and Diode
- No Transformer Required
- Fast Start Up Time of 1.5 ms
- Wide Supply Voltage Range of 3.3 V to 5.5 V
- 1.8 V Compatible Digital Pins
- Thermal Protection
- Available in a 4 mm × 4 mm × 0.9 mm QFN package (RGP)
The DRV8662 is a single-chip piezo haptic driver with 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 piezo haptic actuators. The input signal can be either differential or single-ended. The DRV8662 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, and the boost current limit is programmable via the R EXT resistor. The boost converter architecture will not allow the demand on the supply current to exceed the limit set by the R EXT resistor; therefore, the DRV8662 is well-suited for portable applications. This feature also allows the user to optimize the DRV8662 circuit for a given inductor based on the desired performance requirements.
A typical start-up time of 1.5 ms makes the DRV8662 an ideal piezo driver for fast haptic responses. Thermal overload protection prevents the device from being damaged when over driven.
Technical documentation
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View all 5 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV8662 Piezo Haptic Driver with Integrated Boost Converter datasheet (Rev. C) | PDF | HTML | 18 Oct 2022 |
| Application note | DRV8662, DRV2700, DRV2665, and DRV2667 Configuration Guide (Rev. A) | PDF | HTML | 08 Dec 2021 | |
| EVM User's guide | DRV8662 Piezo Haptics Driver Evaluation Module (RevD Silicon) (Rev. B) | 09 Mar 2016 | ||
| Product overview | Automotive Haptics Solutions | 16 Sep 2013 | ||
| Analog Design Journal | High-definition haptics: Feel the difference! | 17 Jul 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
DRV8662EVM — DRV8662 Evaluation Module
The DRV8662EVM Evaluation Module (EVM) is a fully-differential, high-voltage piezo actuator driver that provides quick response time for single layer and multi-layer piezo actuators. The DRV8662 drives piezo loads up to 200V differentially using an adjustable integrated boost converter. The (...)
User guide: PDF
Calculation tool
DRV8662-2665-2667_DESIGN_TOOL — DRV8662/DRV2665/DRV2667 Design Equation Tool
The DRV8662/DRV2665/DRV2667 Design Equation document assists the user in the design phase by calculating the driver hardware configuration based off of user-defined input parameters. The DRV8662/2665/2667 is a piezo haptic driver with integrated 105 V boost switch, integrated power diode, and (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGP) | 20 | Ultra Librarian |
Ordering & quality
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