TPS54623: is there any better option similar to TPS54623 with max current=5A?

Aki Li

Part Number: TPS54623
Other Parts Discussed in Thread: TPS54521, , TPS54528

Customer thought that TPS54623 is too expensive for them. Is there any better option to it? Or other similar products? And the max output current=5A is also ok for them. I am checking TPS54521, but it seems that the efficiency of TPS54521 is a bit lower than TPS54623 .

over 4 years ago

0 JohnTucker over 4 years ago

TI__Guru**** 191445 points

Aki,

TPS5462X series are very popular, for good reason. The performance is good and they are very robust. If you are looking for a less expensive 5 A device, you can look at TPS54528.

0 Aki Li over 4 years ago in reply to JohnTucker

TI__Expert 8225 points

John,

Thank you for the prompt support. Besides TPS54528, is TPS54521 a good option? From the data, the performance of TPS54521 is better than TPS54528, right？

0 JohnTucker over 4 years ago in reply to Aki Li

TI__Guru**** 191445 points

TPS54528 has lower FET RDSon than TPS54521, so for the same conditions, the efficiency should be better for TPS54528. TPS54521 has adjustable switching frequency, so efficiency can improve as switching frequency lowers below that of TPS54528. It may or may not be enough to offset the TPS54528 RDSon advantage. TPA54528 will have a lower BOM cost. It is all an engineering trade off. You will have to make the decision based on your total priorities.

0 Aki Li over 4 years ago in reply to JohnTucker

TI__Expert 8225 points

Thanks!

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TPS54623: is there any better option similar to TPS54623 with max current=5A?