Other Parts Discussed in Thread: TPS7A47,
hello,
I used TPS7a4700 and TPS7A3301 to supplied ±18V for my audio amplifier TME49724 。 At powering on, the amplifier outputed a pulse voltage (tens of milliseconds,up to 8V) ,which damaged my audio ADC。 I suspect that negative and positive power sources have different ramp time that leads to this problem.According to waveform captured,+18 voltage can power on in a few milliseconds, but -18V takes hundreds of milliseconds .So, is there any suggestions can solve this problem ?
Besides, the capacitors added the two LDO ss/nr pins are 1uF。