|Package | PIN:||VSSOP (DGS) | 10|
|Temp:||I (-40 to 85)|
- Flexible Haptic and Vibration Driver
- LRA (Linear Resonance Actuator)
- ERM (Eccentric Rotating Mass)
- I2C-Controlled Digital Playback Engine
- Waveform Sequencer andTrigger
- Real-Time Playback Mode through I2C
- Internal RAM for Customized Waveforms
- I2CDual-Mode Drive (Open and Closed Loop)
- Smart-Loop Architecture (Patent Pending Control Algorithm)
- Automatic Overdrive and Braking
- Automatic Resonance Tracking and Reporting (LRA Only)
- Automatic Actuator Diagnostic
- Automatic Level Calibration
- Wide Support for Actuator Models
- Immersion TouchSense® 3000 Compatible
- Drive Compensation Over Battery Discharge
- Wide Voltage Operation (2 V to 5.2 V)
- Efficient Differential Switching Output Drive
- PWM Input with 0% to 100% Duty-Cycle Control Range
- Hardware Trigger Input
- Fast Startup Time
- 1.8-V Compatible, VDD-Tolerant Digital Interface
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Texas Instruments DRV2604LDGSR
The DRV2604L device is a low-voltagehaptic driver that provides a closed-loopactuator-control system for high-quality tactile feedback for ERM and LRA. This schema helpsimprove actuator performance in terms of acceleration consistency, start time, and brake time andis accessible through a shared I2C compatible bus or PWM input signal.
The DRV2604L device includes enoughintegrated 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 optionallytriggered through a hardware trigger terminal.
Additionally, the real-time playback modeallows the host processor to bypass the memory playback engine and play waveforms directly from the hostthrough I2C.
The smart-loop architecture inside the DRV2604L device allows simpleauto-resonant drive for the LRA as well as feedback-optimized ERM drive allowing for automaticoverdrive and braking. The smart-loop architecture creates a simplified input waveform interface aswell as reliable motor control and consistent motor performance.The DRV2604L device also featuresautomatic transition to an open-loop system in the event that an LRA actuator is not generating avalid back-EMF voltage. When the LRA generates a valid back-EMF voltage, theDRV2604L device automatically synchronizes with the LRA. TheDRV2604L also allows for open-loop driving through the use ofinternally-generated PWM.