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Compact μTCA 12V and 3.3V Hot Swap Solution for Advanced Mezzanine Cards

Compact μTCA 12V and 3.3V Hot Swap Solution for Advanced Mezzanine Cards

The LTC4223 positive voltage Hot Swap controller allows a board to be safely inserted and removed from a live AMC or MicroTCA backplane. It controls the main 12V supply with an external N-channel MOSFET and the 3.3V auxiliary supply with an integrated switch. The 12V output ramp rate is adjustable and includes inrush current limiting. The 12V output is also protected against short circuit faults with a fast acting current limit and a 5% accurate timed circuit breaker. The 3.3V output includes both soft start and overcurrent protection.