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Power Management

Q&A LTC4412 for 3.3V 4A - MOSFET Selection Review

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LTC4412 for 3.3V 4A - MOSFET Selection Review

Pons on Jan 11, 2022

Hi,

Our design uses LTC4212 for 3.3V ORing.

Current Rating: 4A (max)

Following MOSFET has been chosen for the design: Si6423ADQ / Vishay

Pl let us know if this MOSFET is good enough for the application?

Best Regards,

Pons

Top Replies

JayBee
Jan 11, 2022 in reply to Pons +1 verified
Pons,

Based on this graph from the MOSFET datasheet:

And the RDSon, the Si6423adq is a suitable MOSFET.

The forward voltage drop of the ideal diode will be around 60mV.

JayBee