gene heskett wrote: > Your idea of triple chipping the driver is an excellent one, but needs a > storage capacitor directly across the chip(s) supply pins, 2" of pcb trace > away won't cut it. Its got to be right there on those 2 pins, and a > capacitor per chip is probably a very good idea. Yes, I put a 1 uF cap on the back of the board directly under the driver chip. One for the low-side driver and logic, one for the floating high-side driver. I've been using this general topology since 2004 or so in my brush servo amp designs.
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