Other Parts Discussed in Thread: TPS54040, LMR33620, LMR36006, LMR36015
Hi everyone,
I am a bit overwhelmed whit the large choice of switching regulators out there so I wonder if someone can give me a few tips.
My design is basically a weighing station with a uP and a 24 bit sigma delta ADC that can be networked together over an RS485 bus using CAT5 cable. Power supply input will be 12 VDC to 24 VDC over the CAT5 cable. The design needs to be robust enough to work reliably in a typical industrial environment. Up to 32 boards may be networked together and they may be connected and disconnected from the bus at any time. Current consumption of each board is less then 100 mA. I am planing on using the TPS54040 and TPS7A4700 as a post regulator for low noise. My concern with this combination is complexity, cost and board space so I was wondering if there is a simpler solution for the task. Some of the features I am looking for are low noise, soft start and power good signal.
Many thanks, Chris