(1)Patent pending control algorithm
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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | DRV2604 Haptic Driver for ERM and LRA With Internal Memory and Smart-Loop Architecture datasheet (Rev. C) | PDF | HTML | 28 Mar 2018 |
| Application note | Haptic Implementation Considerations for Mobile and Wearable Devices (Rev. A) | PDF | HTML | 14 Nov 2021 | |
| Application note | Benefits of Auto-Resonance Tracking (Rev. A) | PDF | HTML | 11 Nov 2021 | |
| User guide | Haptic Control Console GUI (Rev. B) | 14 Oct 2021 | ||
| Application note | Haptic Energy Consumption (Rev. A) | PDF | HTML | 28 Sep 2021 | |
| User guide | Low-Voltage Battery Buck-Boost Haptic Driver Design Guide | 12 Jan 2015 | ||
| Application note | LRA Actuators: How to Move Them? | 03 Nov 2014 | ||
| More literature | DRV2604LEVM-CT Quick Start Guide | 22 May 2014 | ||
| Product overview | Automotive Haptics Solutions | 16 Sep 2013 | ||
| Product overview | Haptics: Touch feedback that really moves you (Rev. A) | 08 Jan 2013 | ||
| More literature | Haptics: Solutions for ERM and LRA Actuators | 18 Dec 2012 |
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