12VDC slew rate limiter

Thread Starter

Kajko

Joined Dec 20, 2016
1
Hallo,


I am looking for a slew rate limiter circuit for my PCB. The PCB input voltage is 12VDC with a slew rate 25V/ms, 25A.

The 12VDC is used to form voltages: 1.0VDC, 2.5VDC, 3.3VDC, and 5.0VDC, with a low ripple (FPGA design).


One of the DC-DC converters (12VDC to 1VDC) has a slew rate limitation max. 10V/ms, which I overlooked, and this is the reason why it is now unstable. I have to fix it now. There is no place on the PCB to implent a slew rate limiter (like RC Filter) on the input to the DC-DC converter.


Since the PCB is already manufactured I need the slew rate limiting circuit on the input for 25A. Any advice for a place limiting design?
 
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