Other Parts Discussed in Thread: PMP11257
Tool/software:
Hi, I am trying to achieve 48V on Vdd with reference to RTN. I have added a bulk capacitance of 47uF from Vdd to RTN.
The Vdd voltage kept on resetting from 46V down to 0V and back up again. So I added a 2.2K load resistor and it maintained at 46.5V. At this point, I measured CDB and it was still held low at 0.155V even though Vdd is stable at 46.5V.
I then connected a separate board (draws about 4.65W) to Vdd of the TP2378 and Vdd now fluctuates between 4.7V to 0V and it goes up and down. CDB remains low.
Did the TPS2378 ever got out of current limiting mode even when Vdd was stable at 46.5V with a 2.2k load?
