DRV2605LDGSR

The DRV2605L device is a low-voltage 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 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 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 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 DRV2605L device automatically synchronizes with the LRA. The DRV2605L 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.

Applications

• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripheral Devices
• Touch-Enabled Devices
• Industrial Human-Machine Interfaces
• Electronic Point of Sale (ePOS)

Key features

• 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 Algorithm) – 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 Range
• Hardware Trigger Input
• Fast Startup Time
• 1.8-V Compatible, VDD -Tolerant Digital Interface