LM25149: negative power output

Chen Alex1

Genius 3755 points

Part Number: LM25149
Other Parts Discussed in Thread: LM5148

hi sIR

I want to design a negative power output

vin 24v /vout -5V/25A

LM25149 is a suit solution?

any tool to calculation parameter?

over 1 year ago

0 David Baba over 1 year ago

TI__Mastermind 40040 points

Hello Alex,

please follow the guidance in the application note below.

Working with Inverting Buck-Boost Converters (Rev. B)

Also, you can use the calculator and insert VIN as VIN + |VOUT| (modulus) and IOUT as IIN+IOUT where IIN is PIN/VINmin, and PIN ~POUT/0.9, where POUT is |VOUT|*IOUT.

Hope this helps.

David.

0 Charles Goeller over 1 year ago in reply to David Baba

Prodigy 30 points

Would it be possible to have your team review an LM5148 -15V output design I am considering for use?

0 David Baba over 1 year ago in reply to Charles Goeller

TI__Mastermind 40040 points

Sure Charles,

Feel free to open new thread when ready for review. Thanks.

David.

0 Charles Goeller over 1 year ago in reply to David Baba

Prodigy 30 points

By new thread, you mean post a separate question I gather. But I do not want to share this design with forum.

0 David Baba over 1 year ago in reply to Charles Goeller

TI__Mastermind 40040 points

Hello Charles,

Can email me

David.Baba@ti.com

Thanks.

David.

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LM25149: negative power output