DRV2665 Series
Haptic driver for piezo with integrated 105-V boost converter and DAC
Manufacturer: Texas Instruments
Catalog
Haptic driver for piezo with integrated 105-V boost converter and DAC
Key Features
• Integrated Digital Front EndUp to 400-kHz I 2C Bus Control100-Byte Internal FIFO InterfaceImmersion TS5000-CompliantOptional Analog InputsHigh Voltage Piezo-Haptic DriverDrives up to 100 nF at 200 V PP and 300 HzDrives up to 150 nF at 150 V PP and 300 HzDrives up to 330 nF at 100 V PP and 300 HzDrives up to 680 nF at 50 V PP and 300 HzDifferential Output105-V Integrated Boost ConverterAdjustable Boost VoltageAdjustable Boost Current LimitIntegrated Power FET and DiodeNo Transformer Required2-ms Fast Start Up Time3.3- to 5.5-V Wide Supply Voltage Range1.8-V Compatible, V DD Tolerant Digital PinsIntegrated Digital Front EndUp to 400-kHz I 2C Bus Control100-Byte Internal FIFO InterfaceImmersion TS5000-CompliantOptional Analog InputsHigh Voltage Piezo-Haptic DriverDrives up to 100 nF at 200 V PP and 300 HzDrives up to 150 nF at 150 V PP and 300 HzDrives up to 330 nF at 100 V PP and 300 HzDrives up to 680 nF at 50 V PP and 300 HzDifferential Output105-V Integrated Boost ConverterAdjustable Boost VoltageAdjustable Boost Current LimitIntegrated Power FET and DiodeNo Transformer Required2-ms Fast Start Up Time3.3- to 5.5-V Wide Supply Voltage Range1.8-V Compatible, V DD Tolerant Digital Pins
Description
AI
The DRV2665 device is a piezo haptic driver with integrated 105-V boost switch, integrated power diode, integrated fully-differential amplifier, and integrated digital front end. This versatile device is capable of driving both high-voltage and low-voltage piezo haptic actuators. The input signal can be driven as haptic packets over the I 2C port or through the analog inputs.
The digital interface of the DRV2665 device is available through an I 2C compatible bus. A digital interface relieves the costly processor burden of the PWM generation or additional analog channel requirements in the host system. Any writes to the internal first-in, first-out buffer (FIFO) will automatically wake up the device and begin playing the waveform after the 2 ms internal start-up procedure. When the data flow stops or the FIFO under-runs, the DRV2665 device will automatically enter a pop-less shutdown procedure.
The boost voltage is set using two external resistors, and the boost current limit is programmable through the R EXT resistor. A typical start-up time of 2 ms makes the DRV2665 device an ideal piezo driver for fast haptic responses. Thermal overload protection prevents the device from being damaged when overdriven.
The DRV2665 device is a piezo haptic driver with integrated 105-V boost switch, integrated power diode, integrated fully-differential amplifier, and integrated digital front end. This versatile device is capable of driving both high-voltage and low-voltage piezo haptic actuators. The input signal can be driven as haptic packets over the I 2C port or through the analog inputs.
The digital interface of the DRV2665 device is available through an I 2C compatible bus. A digital interface relieves the costly processor burden of the PWM generation or additional analog channel requirements in the host system. Any writes to the internal first-in, first-out buffer (FIFO) will automatically wake up the device and begin playing the waveform after the 2 ms internal start-up procedure. When the data flow stops or the FIFO under-runs, the DRV2665 device will automatically enter a pop-less shutdown procedure.
The boost voltage is set using two external resistors, and the boost current limit is programmable through the R EXT resistor. A typical start-up time of 2 ms makes the DRV2665 device an ideal piezo driver for fast haptic responses. Thermal overload protection prevents the device from being damaged when overdriven.
