SLOA194A May   2014  – January 2022 DRV2603 , DRV2604 , DRV2604L , DRV2605 , DRV2605L , DRV2605L-Q1 , DRV2624 , DRV2625 , DRV2667

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Eccentric Rotating Mass
    2. 1.2 Linear Resonant Actuator
    3. 1.3 Piezo Actuator
  3. 2How to Measure Energy
    1. 2.1 Current Consumption
    2. 2.2 Energy Consumption
    3. 2.3 Current Versus Acceleration
  4. 3Energy Consumption Comparisons for ERM, LRA and Piezo
  5. 4Energy Consumption Advantage of DRV260x and DRV262x Drivers
  6. 5Appendix A Energy Consumption of Actuators
  7. 6Appendix B. Test Setup Picture
  8. 7Appendix C. Energy Consumption Calculation for Smartphone Scenarios
  9. 8Revision History

1 Introduction

Haptics provide mechanical feedback through the use of vibrations to simulate specific events, surfaces, and effects. It can simulate different surfaces and effects by varying frequency, amplitude, duration, and direction of a vibration.

Figure 1-1 illustrates three types of actuators, Eccentric Rotating Mass (ERM), Linear Resonant Actuator (LRA), and Piezo Actuator.

GUID-20211119-SS0I-MWP0-X16K-9GRCT43X0WQC-low.gif Figure 1-1 Three Types of Actuators