Hi,
I have a problem with LM25119 chip. Output voltage is ~1V on each channel, assuming there should be 5V.
Vin is 24V. I measured VCC1 which is 7.5V. Voltage between VCC1 and HB is 6.47V, SS1 is 4.6V, FB1 is 0.8V, COMP1 is 1.08V., UVLO is 12V.
There are Cramp=1n, Rramp=28k,Rs=0.008Rm Rfb1=3.32 and Rfb2=17.8k mounted on the board. I used MOSFETS SiDR680DP.
Where should I look for a problem?