DRV2624: I am a ME in Austin in search of a EE familiar with the Ti DRV2624 to be used in a medical device.

Hi Ivan,

I've been traveling and am just getting back to my project. Are you able to provide insight how to contact the Austin TI Office for on-site support. 

Hi Craig,

Do you have some specific questions about DRV2624? If you have specific questions you can let us know or start new e2e threads with those questions.
Is my understanding correct that you want to use DRV2624 in an application and you want to control it with an MCU or similar, so you're looking for someone who can do the necessary control for the DRV? There is a previous driver for linux platforms as pointed out on my last post: e2e.ti.com/.../520428

You could contact Customer Support Center for details on local offices: ticsc.service-now.com/.../

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

Hi Ivan,

I did look at the linux link but could not gain insight from the post. I am using a Nordic nRF52 module for MCU and BLE in an attempt to create pulses from 1 to 100Hz which will trigger the DRV. I am using an LRA with a 68Hz resonant frequency. In principal, I'm using an FSR that interprets a variable muscular force and convert the output to a haptic "tapping" proportional to the applied force. i.e. small force = low frequency tapping (1 Hz) up to strong force (100Hz tapping). Hope this makes sense.

Hi Craig,

Perhaps varying the drive time would be easier than varying drive frequency.
LRA should be driven at its resonance frequency for best performance. If load frequency is shifted, the vibration force is reduced (thus performance is reduced). Although this could be another option; shift drive frequency so that vibration force is reduced.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

Thank you so much for helping me work toward a solution. In response to your statement, I am not trying to change the strength. I want the "strength" to always be at the maximum resonant frequency which is 68Hz. My goal is to have the 68 Hz output occur at a varying frequency between 1 pulse per second up to 100 pulses per second. This output corresponds proportionally to muscular contraction. A weak contraction elicits an output of 1Hz. As contractions become stronger, the pulses occur more closely together, up to a maximum of 100 Hz. Regardless of the number of pulses per second, the output should always be at the resonant frequency of 68 Hz.