Other Parts Discussed in Thread: TPS54318
customer is using tps54218, plan to change to tps54318, whether i use it directly ,no change any schematic;
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The TPS54218 is pin to pin and BOM to BOM compatible with the TPS54318.
The only difference is that the current limit is different: for the TPS54218 it has a min. value of 2.9 A and for the TPS54318 it has a min. value of 3.7 A.
So the answer is yes, if the design works for one then it will work for the other. As long as the output current doesn't exceed the limits.