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Texas Instruments
DRV2605L-Q1 Automotive Haptic Driver for LRA and ERM with Effect Library and Smart-Loop Architecture

The DRV2605L-Q1 device is an automotive haptic driver that includes a haptic-effect library and 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 DRV2605L-Q1 device offers a licensed version of TouchSense 2200 software from Immersion which eliminates the requirement to design haptic waveforms because the software includes over 100 licensed effects (6 ERM libraries and 1 LRA library) and audio-to-vibe features.
Additionally, the real-time playback mode allows the host processor to bypass the library playback engine and play waveforms directly from the host through I2C.
The smart-loop architecture inside the DRV2605L-Q1 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 DRV2605L-Q1 also allows for open-loop driving through the use of internally-generated PWM. Additionally, the audio-to-vibe mode automatically converts an audio input signal to meaningful tactile effects.

• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
   – Device Temperature Grade 2: –40°C to 105°C
   – Device HBM ESD Classification Level 1B
   – Device CDM ESD Classification Level C6
• Flexible Haptic and Vibration Driver
   – LRA (Linear Resonance Actuator)
   – ERM (Eccentric Rotating Mass)
• I2C-Controlled Digital Playback Engine
   – Waveform Sequencer and Trigger
   – Real-Time Playback Mode through I2C
   – I2C Dual-Mode Drive (Open and Closed Loop)
• Smart-Loop Architecture (Patent Pending Control
   – Automatic Overdrive and Braking
   – Automatic Resonance Tracking and Reporting
      (LRA Only)
   – Automatic Actuator Diagnostic
   – Automatic Level Calibration
   – Wide Support for Actuator Models
• Licensed Immersion TouchSense® 2200 Features:
   – Integrated Immersion Effect Library
   – Audio-to-Vibe
• 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
• Hardware Trigger Input
• Fast Startup Time
• 1.8-V Compatible, VDD-Tolerant Digital Interface

2 Applications
• Touch-Enabled Infotainment
• Mechanical Button Replacement
• Automotive Body Controls
• Driver Alerts

other parts : DRV2605LTDGSRQ1  


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