Other Parts Discussed in Thread: LM5143
dear
customer use LM25143-Q1,and want to design 100A circuit,but it only shows 50A in datasheet ,is it use 2pcs LM25143-Q1 to push 100A?thanks in advance
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dear
customer use LM25143-Q1,and want to design 100A circuit,but it only shows 50A in datasheet ,is it use 2pcs LM25143-Q1 to push 100A?thanks in advance
HI
Yes, 2 pcs LM5143 with lower working frequency(<250Khz) can push to 100A, and the mosfet thermal dissipation need to be taken care.
Thanks
Raymond,
You can use the 5V/50A 2-phase apps circuit example in the LM25143-Q1 data sheet and extend it to 4 phases. As Daniel mentioned, component selection is critical at this current level to maximize efficiency and thermal performance. You can use the quickstart calculator to assist with this design.
Regards,
Tim