Hi, I have a design that has two TAS5706A parts on it with slightly different layout and routing of the power and signals. When I apply +24V power to the design only one of the amps works as expected. If I lower the input supply voltage to 10V then both amps work as expected. The 3.3V rail is derived from the main supply so ramps up slightly behind it in time. I note that some of the TAS amps need a power supply sequence of 3.3V first, this is hard to do without getting a custom power supply built, it is much easier to derive the 3.3V from the main rail.
Do you have any hints on where to find the answer to this problem?
Neil