Hello Ti Support
I did a design with 3 TPS53631RSB switching regulators and CSD95472 smart power stages. The output voltages (1.2V, 1.05V and 1.8V) are correct so far.
But at the power up of all three voltages there are no smooth slopes, instead there are voltage steps. Enclosed please find a scope plot (*.png) of the 1.2V power up for reference.
I tried several settings for the COMP network but I can only make it worse, not better.
Now the main difference to your reference designs is that I use the CSD95472 and not the CSD95372. So is the TPS53631 compatible to the CSD95472 (according the data sheets it should, I think)?
Are there any formulas available to correctly calculate the COMP network?
Do you have any ideas what I can do to make this power up smooth?
Is the TPS53631 capable of working in a ceramic capacitor only configuration?
Thank You, Kind Regards,
Patrik
