Tool/software:
Hello,
Why is the maximum output current of the LM5143-Q1 limited to 40A even though it is an external FET DC/DC controller?
Thanks,
JH
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Hello JH
While the LM5143-Q1 is an external FET DC/DC controller, the 40A specification should be viewed as a general design recommendation rather than a hard limitation. The actual maximum output current is indeed determined by the external components (MOSFETs and inductors) you select.
For applications requiring currents beyond 40A, we typically recommend moving to a 3-phase or 4-phase design approach. This recommendation is based on practical considerations - managing efficiency and thermal performance becomes challenging even with dual phase designs.
Hope this answers your question
Thank you
Regards
Onkar Bhakare
Hello JH
Let me know if you need further help.
Thank you
Regards
Onkar Bhakare