Other Parts Discussed in Thread: TPS562201, , TPS54308, TPS562208
Team, I have a customer experiencing noise on the switch node of the TPS562201 and they are now seeing the same behavior with the TPS54202. Can you offer any advice to help supress this? Ideally, we can maybe beef up the switch node with a white wire or add a snubber circuit to test on the existing board to give confidence in a solution. We have the opportunity to change the PCB, so if there is a better device that offers low EMI and good efficiency we can offer this.
The particular circuit involved is 9V input 5V output @2A
We have recommended the same device for another rail with 9V input 3.3V output @1A. Both of these power a noise sensitive RF node and low noise is important. Please advise. Thank you!
Scope shot, Layout and Schematic is attached.
L1 TOP red
SW node routed in L3