Hi team,
My customer is using TPS54320 now, and meets some problems. When they use 100k, 30k resistor. The outuput will oscillate sometimes. But when we change it to 30k, 10k. The output is ok and works well. Our datasheet just recommends to use 10k for the low side resistor and didn't say why. I have checked the control loop, the phase margins are both ok when 100k,30k and 30k,10k conditions.
Could you please help explain it?
Thank you.
BR
Frank
