There seems to be some real disconnect between the TPS65261 part and the webench design software. If I go to this page:
http://www.ti.com/product/tps65261#relEnds
and enter some values into the tables on the right I am not provided the opportunity to enter the desired output voltage ripple percentage.
From within webench, it seems there is no option ANYWHERE to change the output voltage ripple percentage. The only place I can find to alter this is if I start a new design then webench tells me the part is not webench enabled. This is ridiculous. What use is a design tool if it misses out the ability to enter a parameter as basic as output voltage ripple?
I want to design a power network based on the TPS65261. It will take 2 sources. 12V and 5V. The first channel will buck 12V to 5V@1.35A. The second channel will buck 5V to 2V5@0.88A with 15%Vpp output ripple. The third channel will buck 5V to 1.5V@0.9A.
Because webench is forcing me to use 10%Vpp on the 2V5 channel, it cannot generate a solution. The tolerance must be reduced to 15%Vpp for it to work, but with no option to alter the the Vpp I cannot get webench to work.
How do I alter Vpp in a design?
