My customer is using the TPS56528DDAR with the following conditions to supply an XFP optical module power.
- VIN = 12V, VOUT = 5V, IOUT = 1.24A(Inrush current=3.48A)
They designed the TPS56528 with the follwoing TI's simulation result shown below.
1. Please review whether there is a problem with the customer's schematic.
2. The following capture image is the initial power-up of the TPS56528. While the output is ramping up from 0V to 5V, the symptom of about 10mS holding at about 2.24V level is observed.
2-1. Is this symptom normal? Please tell us the cause of the symptom and how to get rid of it.
2-2. Are there any expected problems with this symptom?