DRV2604LYZFR

Features for the DRV2604L

• 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
  • Internal RAM for Customized Waveforms
  • 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
• 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, V_DD-Tolerant Digital Interface

Description for the DRV2604L

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.