Isolated 12V/2.5A buck power supply IC suggestions

Tyler Fontaine

Other Parts Discussed in Thread: LM5157, LM5155, LM5156, TPS54308

Could I get a recommendation for any TI products that I could use to design an isolated 12V/2.5A power supply with a 24V input?

over 5 years ago

0 Youhao Xi over 5 years ago

TI__Guru* 80055 points

Hi Tyler,

Thank you for reaching out and considering TI solutions. You may consider the LM5157 or the LM5156 in a flyback configuration. The LM5157 has integrated MOSFET supporting a peak current of at least 6.5A, and the LM5155/56 employs external MOSFET for better thermal management. You may refer to the following design, and you can change the IC to LM5156.

https://www.ti.com/tool/PMP40555

Thanks,

Youhao Xi, Applications Engineering

0 Young Zhao over 5 years ago

TI__Genius 14910 points

Hi ,

Or you can try a flybuck solution with TPS54308.

app note as below:

Designing a Simple and Low-Cost Flybuck Solution With the TPS54308.pdf

BRs,

Young

Isolation

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Isolated 12V/2.5A buck power supply IC suggestions