
DRV2604L Series
Haptic driver for ERM/LRA with 2-V operation, waveform memory & auto-resonance tracking
Manufacturer: Texas Instruments
Catalog
Haptic driver for ERM/LRA with 2-V operation, waveform memory & auto-resonance tracking
Key Features
• Flexible Haptic and Vibration DriverLRA (Linear Resonance Actuator)ERM (Eccentric Rotating Mass)I2C-Controlled Digital Playback EngineWaveform Sequencer and TriggerReal-Time Playback Mode through I2CInternal RAM for Customized WaveformsI2C Dual-Mode Drive (Open and Closed Loop)Smart-Loop Architecture (Patent Pending Control Algorithm)Automatic Overdrive and BrakingAutomatic Resonance Tracking and Reporting (LRA Only)Automatic Actuator DiagnosticAutomatic Level CalibrationWide Support for Actuator ModelsImmersion TouchSense®3000 CompatibleDrive Compensation Over Battery DischargeWide Voltage Operation (2 V to 5.2 V)Efficient Differential Switching Output DrivePWM Input with 0% to 100% Duty-Cycle Control RangeHardware Trigger InputFast Startup Time1.8-V Compatible, VDD-Tolerant Digital InterfaceFlexible Haptic and Vibration DriverLRA (Linear Resonance Actuator)ERM (Eccentric Rotating Mass)I2C-Controlled Digital Playback EngineWaveform Sequencer and TriggerReal-Time Playback Mode through I2CInternal RAM for Customized WaveformsI2C Dual-Mode Drive (Open and Closed Loop)Smart-Loop Architecture (Patent Pending Control Algorithm)Automatic Overdrive and BrakingAutomatic Resonance Tracking and Reporting (LRA Only)Automatic Actuator DiagnosticAutomatic Level CalibrationWide Support for Actuator ModelsImmersion TouchSense®3000 CompatibleDrive Compensation Over Battery DischargeWide Voltage Operation (2 V to 5.2 V)Efficient Differential Switching Output DrivePWM Input with 0% to 100% Duty-Cycle Control RangeHardware Trigger InputFast Startup Time1.8-V Compatible, VDD-Tolerant Digital Interface
Description
AI
The DRV2604L device is a low-voltage haptic driver that provides a closed-loop actuator-control system for high-quality tactile feedback for ERM and LRA. This schema helps improve actuator performance in terms of acceleration consistency, start time, and brake time and is accessible through a shared I2C compatible bus or PWM input signal.
The DRV2604L device includes enough integrated RAM to allow the user to pre-load over 100 customized smart-loop architecture waveforms. These waveforms can be instantly played back through I2C or optionally triggered through a hardware trigger terminal.
Additionally, the real-time playback mode allows the host processor to bypass the memory playback engine and play waveforms directly from the host through I2C.
The smart-loop architecture inside the DRV2604L device allows simple auto-resonant drive for the LRA as well as feedback-optimized ERM drive allowing for automatic overdrive and braking. The smart-loop architecture creates a simplified input waveform interface as well as reliable motor control and consistent motor performance. The DRV2604L device also features automatic transition to an open-loop system in the event that an LRA actuator is not generating a valid back-EMF voltage. When the LRA generates a valid back-EMF voltage, the DRV2604L device automatically synchronizes with the LRA. The DRV2604L also allows for open-loop driving through the use of internally-generated PWM.
The DRV2604L device is a low-voltage haptic driver that provides a closed-loop actuator-control system for high-quality tactile feedback for ERM and LRA. This schema helps improve actuator performance in terms of acceleration consistency, start time, and brake time and is accessible through a shared I2C compatible bus or PWM input signal.
The DRV2604L device includes enough integrated RAM to allow the user to pre-load over 100 customized smart-loop architecture waveforms. These waveforms can be instantly played back through I2C or optionally triggered through a hardware trigger terminal.
Additionally, the real-time playback mode allows the host processor to bypass the memory playback engine and play waveforms directly from the host through I2C.
The smart-loop architecture inside the DRV2604L device allows simple auto-resonant drive for the LRA as well as feedback-optimized ERM drive allowing for automatic overdrive and braking. The smart-loop architecture creates a simplified input waveform interface as well as reliable motor control and consistent motor performance. The DRV2604L device also features automatic transition to an open-loop system in the event that an LRA actuator is not generating a valid back-EMF voltage. When the LRA generates a valid back-EMF voltage, the DRV2604L device automatically synchronizes with the LRA. The DRV2604L also allows for open-loop driving through the use of internally-generated PWM.