The DRV2603 is a haptic driver designed specifically to solve common obstacles in driving both Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements. The DRV2603 is designed for low latency, high efficiency, and more drive strength for actuators commonly used for tactile feedback in the portable market.
LRA actuators typically have a narrow frequency band over which they have an adequate haptic response. This frequency window is typically ±2.5 Hz wide or less, so driving an LRA actuator presents a challenge. The DRV2603 solves this problem by employing auto resonance tracking, which automatically detects and tracks the LRA resonant frequency in real time. This means that any input PWM frequency within the input range (10 kHz to 250 kHz) will automatically produce the correct resonant output frequency. As an additional benefit, the DRV2603 implements an automatic braking algorithm to prevent LRA ringing at the end of waveforms, leaving the user with a crisp haptic sensation.
For both ERM and LRA actuators, the automatic input level translation solves issues with low voltage PWM sources without adding additional external components, so if the digital I/O levels vary, the output voltage does not change. The DRV2603 also has supply correction that ensures no supply regulation is required for constant vibration strength, allowing an efficient, direct-battery connection.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV2603 Haptic Drive With Auto-Resonance Detection for Linear Resonance Actuators (LRA) datasheet (Rev. C) | PDF | HTML | 10 Aug 2016 |
| 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 | |
| Application note | Haptic Energy Consumption (Rev. A) | PDF | HTML | 28 Sep 2021 | |
| Application note | LRA Actuators: How to Move Them? | 03 Nov 2014 | ||
| Product overview | Haptic Solutions for Wearable Devices (Rev. A) | 30 Sep 2014 | ||
| User guide | DRV2603 ERM/LRA Haptic Driver Evaluation Kit (Rev. B) | 24 Sep 2013 | ||
| 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 | ||
| More literature | DRV2603EVK-CT Quick Start Guide | 20 Apr 2012 |
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The DRV2603 is a haptic driver designed to control Linear Resonant Actuators (LRA) and Eccentric Rotating Mass (ERM) motors. The DRV2603 provides many features which help eliminate the design complexities of haptic motor control including reduced solution size, high efficiency output drive, (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RUN) | 10 | Ultra Librarian |
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