SNVAAA7 October 2024 LM5013 , LM5013-Q1 , LM5141 , LM5141-Q1 , LM5143 , LM5143-Q1 , LM5143A-Q1 , LM5145 , LM5145-Q1 , LM5146 , LM5146-Q1 , LM5148 , LM5148-Q1 , LM5149 , LM5149-Q1 , LM5190-Q1 , LM65645-Q1 , LM70660 , LM706A0 , LM706A0-Q1 , LM70840 , LM70840-Q1 , LM70860 , LM70860-Q1 , LM70880 , LM70880-Q1 , LM76003 , LM76003-Q1 , LM76005 , LM76005-Q1 , TPS54360B , TPS54360B-Q1 , TPS54560 , TPS54560B , TPS54560B-Q1 , TPS54561 , TPS54561-Q1
A good power design practice is to use an output inductor with a saturation current rating higher than the maximum high side current limit specification of a regulator, this makes sure that the inductor does not saturate even during a soft-short condition on the output.
As an example, some converters rated for 65V 8A have a maximum current limit greater than 17A whereas a controller can have a max current limit of approximately 12A for an 8A continuous output design. Higher current limits can restrict inductor choices and can require slightly larger or taller inductors versus what could be used with a device with tighter current limits. LM70880-Q1 shares the benefit of having tight current limits which can enable lower cost or smaller inductors.