SLOS825E December 2012 – April 2018 DRV2605
The DRV2605 smart-loop architecture has three modes of operation. Each of the modes can drive either ERM or LRA devices.
Each mode has different advantages and disadvantages. The DRV2605 device brings new cutting-edge actuator control with closed-loop operation around the back-EMF for automatic overdrive and braking. However, some existing haptic implementations already include overdrive and braking that are embedded in the waveform data. Open-loop mode is used to preserve compatibility with such systems.
The following sections show how the input data for each DRV2605 interface is translated to the output drive signal.