Hi,
We are using TPS40305 to convert 8-16V (VIN) to 4.5V (@9A) Vout.
This power supply is becoming main culprit in the PTCRB certification (not able to reach to the limitations for TIS). As soon as we remove this supply from equation the system gets through the process. Even we have already tried to put a shield on but no effect. At last we are planning to redo the layout as well add more filter circuit at the input and output both the terminals.
Here is the design snippet:
I'm looking to add PI filter as well multiple low value capacitors in the input path, as follows for output.
Is it gonna help improve the performance? Anything specific that you thing we should take care during routing?
Thanks,
Dhvanish