LM5171-Q1: Question about WEBENCH simulation of LM5171-Q1

Chase Jeong

Mastermind 7425 points

Part Number: LM5171-Q1
Other Parts Discussed in Thread: LM5137

Tool/software:

Dear TI experts,

I made WEBENCH simulation for my customer's application. Please see the result below.

webench.ti.com/.../SDP.cgi

And I have some questions ;

1. Is 30A current output made of 15A each output? (Total 30A) or 30A each output? (Total 60A)

2. Could you recomment other buck controller (more simple) for my customer?

- Input : 45V~75V

- Output : 12V, 30A

Best regards,

Chase

7 months ago

0 Feng Ji 7 months ago

TI__Mastermind 22650 points

Hi Chase,

I cannot open your result.

The total output current will be shared by two phases. If you need 30A output current, each phase will be 15A.

Best Regards,

Feng

0 Feng Ji 7 months ago in reply to Feng Ji

TI__Mastermind 22650 points

Hi Chase,

I will re-assign this thread to the buck team for a simpler device.

Best Regards,

Feng

0 David Baba 7 months ago in reply to Feng Ji

TI__Mastermind 40040 points

Hello Chase,

Do you need a Buck Converter? Do you need the supply to be Bidirectional? It is not clear from above, what part you considering for your application.

Thanks.

David.

0 Chase Jeong 7 months ago in reply to David Baba

Mastermind 7425 points

Dear David,

Thank you for your support.

If buck converter can support 30A, Yes I need buck converter.

And No, I just need one output and not bidirectional. WEBENCH result is just I put my customer's condition.

Best regards,

Chase

0 David Baba 7 months ago in reply to Chase Jeong

TI__Mastermind 40040 points

Hello Chase,

Suggest LM5137 dual phase, 15A per phase, it has adjustable soft start to 20ms. Hope this helps.,

David.

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LM5171-Q1: Question about WEBENCH simulation of LM5171-Q1