Other Parts Discussed in Thread: CSD17527Q5A
We are using an LM3152MH-3.3 part with two CSD17527Q5A FETs to generate 3.3V from a 24V input. We have recently had 2 of these circuits fail and have found that one or both of the FETs have failed shorted. When I use TINA simulation software with these input/output voltages I see that the recomend FET is a CSD18537 which is a 60V part rather than the 30V part that we used. Is the 30V part too low a voltage rating for this application and the cause of our failures? The input power is from a VXI back plane and the rated supply variation is 24V +1.2/-.72 volts. The 3.3 is powering an FPGA and the current draw is not known, most likley well under 1 amp.
