Other Parts Discussed in Thread: TPS62404, , TPS62400
I’m currently using the dual buck converter IC from TI (TPS62404QDRCRQ1) that is supposed to output 1.575V and 3.3V. The 3.3V output (Vout2) is working fine. However, I measured only 1.2V at the 1.575V output (Vout1). I’ve also eliminated the possibility of a loading issue by cutting some traces on my board to isolate Vout1 from the rest of my circuits. My output filter values for each buck converter are 4.7uH and 10uF. The device marking is “OET 5CK CV1J”.
I'm not sure what else could be causing Vout1 to output 1.2V instead of 1.575V. Is it possible that I somehow got TPS62404 instead of TPS62404-Q1?