We are using TPS544C20 as regulator for 5.5V power rail (5.5V @ 16A)The schematics was referenced from TI Webench online tool. All layout guidelines are followed. The regulator is enabled for sequencing uses CNTL pin of TPS544C20. We are facing issue on power up where we are not seeing the regulator turning ON.
We change the FB resistor only to output 3.3V then the regulator turning ON but when change FB resistor to 5.5V we are not seeing the regulator turning ON.
We are debugging the issue and want TI experts to check the schematics and indicate any observations. The CNTL is used to enable the regulator and this is connected to 3.3V with 10K as pull-up, which comes first then enables TPS544C20.
Please check the schematics and let us know your observations.2437.WBDesign2.pdf
