I have created a design with the TPS4022RHAT which is designed to supply 5 & 3.3V @15 A.
I used webbenc to select the values and created the design based on them.
I am now testing the power supply and have a problem with Channel 1.
at no load the output is sitting at around 4.6V instead of 5V and applying a light load to the output the voltage starts to drop.
It looks like a current sensing issue but I cannot work out what I have done wrong.
Both the webbench output and my schematic are attached below.
The 3.3V output on channel 2 is working fine.
AGND & PGND are seperaTPS40422_5V_15A_3V3_15A _ PSU.pdfwebench_project_28154_7_534120988.pdfte Planes which are connected together at the themal pad of the device.
