Part Number:TPS54140
Hello,
We have an issue on our 2 prototypes that implements following schematic:
This schematic has been validated on a previous product but today we have the following startup curves and the DC/DC do not start. We have 1.2V output.
We suspect a layout issue on our 4-layers PCB, but we don't find the root cause. We tried improve the layout on pin 9 (GND) by adding short wires to ground.
Any idea?
Thank you for your help.
Nicolas