Implement inrush current limit

Implement inrush current limit like we did in Sayma AMC / AFCZ. It's critical for operation with NAT ecosystem.

• P3V3MP
• payload power
• RTM 12V switch
• FMC 12V switch

changed title from inrush current limit to Implement inrush current limit

I agree, this relates to the problem that GSI reported, that the NAT PSU tripped if the AFC was turned on with certain FMCs because of current limits, right?

I was looking at the AFCZ board to check the solution and I couldn't find the inrush current limiter, either in the main 12V line or between it and the lines for the connectors. Management power seems to have a resetable fuse. I'm looking at commit 13eb879. What am I missing?

I'm talking about these circuits the capacitors may need to be higher, 1uF or so

the similar, well-tested solution is also used in Sayma AMC https://github.com/sinara-hw/Sayma_AMC/blob/master/POWER_Management.SchDoc

12V RTM and both FMC

P3V3MP RTM only (like on Sayma and AFCZ)

Payload_PWR

assigned to @tprzywoz

changed milestone to %AFC v4.0

Ok, I didn`t realize the capacitance and slow start of the power mosfets. I was looking for a NTC or something. This looks great.

mentioned in commit c961a747

Solved in c961a747

closed