This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS563209: TPS563209 heating

Part Number: TPS563209

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

p3,p4.pdf