DRV8662

ACTIVE

Haptic driver for piezo with integrated 105-V boost converter in QFN package

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Product details

Parameters

Haptic actuator type Piezo Input signal PWM, Analog Vs (Min) (V) 3 Vs (Max) (V) 5.5 Output voltage (Max) (V) 100 Vout (Max) (V p-p) 200 Iq (Typ) (mA) 5 Shutdown current (uA) 13 Startup time (ms) 1.5 Operating temperature range (C) -40 to 70 open-in-new Find other Piezo drivers

Package | Pins | Size

VQFN (RGP) 20 16 mm² 4 x 4 open-in-new Find other Piezo drivers

Features

  • High-Voltage Piezo Haptic Driver
    • Drives up to 100 nF at 200 VPP and 300 Hz
    • Drives up to 150 nF at 150 VPP and 300 Hz
    • Drives up to 330 nF at 100 VPP and 300 Hz
    • Drives up to 680 nF at 50 VPP 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 3.0 V to 5.5 V
  • 1.8V Compatible Digital Pins
  • Thermal Protection
  • Available in a 4 mm × 4 mm × 0.9 mm QFN package (RGP)
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Description

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 REXT resistor. The boost converter architecture will not allow the demand on the supply current to exceed the limit set by the REXT 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.

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Technical documentation

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Type Title Date
* Data sheet Piezo-Haptic Driver with Integrated Boost Converter. datasheet (Rev. B) Jul. 01, 2014
User guide DRV8662 Piezo Haptics Driver Evaluation Module (RevD Silicon) (Rev. B) Mar. 09, 2016
Application note DRV8662, DRV2665, and DRV2667 Configuration Guide Sep. 05, 2014
More literature Automotive Haptics Solutions Sep. 16, 2013
Technical article Live from CES 2013 - HD haptic mobile devices Jan. 10, 2013
Application note High-definition haptics: Feel the difference! Jul. 17, 2012
Technical article CES 2012 Preview: Haptics and Touch Screen Controllers Dec. 31, 2011
Technical article TI grabs 14 spots on EDN Hot 100 Products of 2011 list. Nov. 16, 2011
Technical article TI claims 14 of EDN's Hot 100 Products of 2011 Nov. 15, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description
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 (...)
Features
  • High-Voltage Piezo Haptic Driver
  • Drives single-layer and multi-layer piezo actuators
  • Adjustable 200V Differential Output
  • A programmable MSP430 with sample waveforms
  • Directly connect external PWM and analog signals
  • Fast Start-up Time of 1.5ms
  • Wide Supply Voltage Range of 3.0V to 5.5V
  • 1.8V Compatible Digital (...)
  • Design tools & simulation

    SIMULATION MODEL Download
    SLOM224.ZIP (21 KB) - TINA-TI Spice Model
    CALCULATION TOOL Download
    DRV8662/DRV2665/DRV2667 Design Equation Tool
    DRV8662-2665-2667_DESIGN_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 (...)
    Features
    • Piezo actuator model recommendation
    • Boost voltage and forward voltage calculation
    • Feedback resistor and boost current limit resistor values calculation
    • Current requirements approximation
    • Input capacitor and output capacitor capability calculation
    CALCULATION TOOL Download
    SLOR113A.ZIP (209 KB)

    CAD/CAE symbols

    Package Pins Download
    QFN (RGP) 20 View options

    Ordering & quality

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