DRV2604 Texas instruments

DRV2604

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DRV2604

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Описание

The DRV2604 device is designed to provide extremely flexible haptic control of ERM and LRA actuators over a shared I2C compatible bus. This control relieves the host processor from ever generating pulse-width modulated (PWM) drive signals, saving both costly timer interrupts and hardware pins.The DRV2604 device includes enough integrated RAM to allow the user to pre-load over 100 customized waveforms. These waveforms can be instantly played back through I2C or optionally triggered through a hardware trigger pin. 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 DRV2604 device also contains a smart-loop architecture, which allows effortless auto resonant drive for LRA as well as feedback-optimized ERM drive. This feedback gives automatic overdrive and braking, which creates a simplified input waveform paradigm as well as reliable motor control and consistent motor performance.The DRV2604 device features a trinary-modulated output stage, providing greater efficiency than linear-based output drivers. The 9-ball WCSP footprint, flexible operation, and low component count make the DRV2604 device the ideal choice for portable and touch-enabled vibratory and haptic applications.

Flexible Haptic/Vibra Driver
- LRA (Linear Resonance Actuator)
- ERM (Eccentric Rotating Mass)
I²C Controlled Digital Playback Engine
- Internal RAM for Waveform Storage
- Real-Time Playback Mode through I²C
Smart-Loop Architecture⁽¹⁾
- Automatic Overdrive/Braking (ERM/LRA)
- Automatic Resonance Tracking (LRA)
- Automatic Actuator Diagnostic (ERM/LRA)
- Automatic Level Calibration (ERM/LRA)
Immersion TouchSense^® 3000 Compatible
Optional PWM Input with 0% to 100% Duty Cycle Control Range
Optional Analog Input Control
Optional Hardware Trigger Pin
Efficient Output Drive
Fast Startup Time
Constant Acceleration Over Supply Voltage
1.8-V Compatible, V_DD-Tolerant Digital Pins ⁽¹⁾

⁽¹⁾Patent pending control algorithm

Haptic actuator type	ERM, LRA
Features	RAM available, Smart loop
Input signal	Analog, I2C, PWM
Vs (min) (V)	2.5
Vs (max) (V)	5.5
Vout (max) (V)	5.5
Peak-to-peak output voltage (max) (V)	11
Iq (typ) (mA)	0.6
Shutdown current (ISD) (µA)	1.75
Startup time (ms)	0.7
Operating temperature range (°C)	-40 to 85
Rating	Catalog