Hi
we are using TPS563209 as a buck converter from 12V to 5V.
We have dual inputs for this buck- one is DC in from a PSU, other from a booster- TPS61088RHL
When loaded by 2A the inductor gets really hot, over 80 °C and the buck also reaches high temperature.
Same phenomena with both inputs.
Another issue is the booster. when the above buck is loaded , the booster's inductor also gets very hot and the corner of the IC connected to the inductor is also hot.
attached please find schematics.
please advice.
rgds
Ehud Licht