Other Parts Discussed in Thread: TPS54360B, TPS54560B
Hello to all,
Here is my PSU schematic. You can see the derated cap values in red text strings. I've used TPS54560B and TPS54360B in this design and also used Webench Tool for both my +12.6V and +5.6V rails. Hence Webench does not support the inverting application, i've followed SLVA317B and Excel sheet. But i have a few questions;
1) Both my +/-12.6V rails using TPS54560B but frequency resistor values are different for the same Fsw (1966 kHz). Is it OK?
2) Do input and output capacitor values look normal? Actually they are way above than minumum value which is 3uF according to datasheet but there is no info about upper limit :) I need get rid of the ripple and nois as much as possible. That's why i'll use linear regulators after this.
3) Compensation values are different for buck and inverting rail. I've calculated over and over again. Found the exact same values with Excel sheet. I assume they are ok but found some schmatics online that shows some people uses the same components for both buck and inverting application.
4) If is there anything you see on the schmatic is needs to be fixed or if you want to give me some tips it will be awasome:)
Thank you in advance