Hi there,
I have been using the DRV2667 for the last year or so to drive piezo stacks from Thorlabs as micro-actuators. We have been using the chip to output 100Vpp to 200Vpp square waves to quickly and sharply increase the length of the piezos. Over this time, I have burned through quite a few chips. They will often work for weeks before they give out. I am wondering if the square wave actuation is causing the problem.
After the chips go bad, they seem to produce a fuzzy, buzzing sound instead of the familiar click from the square wave pulses.
Any help would be appreciated.
-Drew Hamilton
