LMR51420: LMR51420XFDDCR

m s

Part Number: LMR51420

Tool/software:

I design circuits using TI Power Design(Power Designer (ti.com)).

Detal: Vin:24V Vout:12V Iout:2A

I chose the following design.

The chip（LMR51420） shorted out when it was powered on。Why？

After adjusting the inductance（15uF=>100uF）, the chip(LMR51420) works normally.

Is changing the inductance the right way?

Can you tell me the correct way to keep the chip（LMR51420） from short-circuiting?

0 Andrew Kutzler over 1 year ago

Hi M S,

Can you please your layout and schematic?

Thanks,

Andrew

0 m s over 1 year ago in reply to Andrew Kutzler

0 Andrew Kutzler over 1 year ago in reply to m s

Hi m s,

Can you send the inductor p/n that you used?

Thanks,

Andrew

0 m s over 1 year ago in reply to Andrew Kutzler

Hi Andrew,

SLO1350H150MTT.

Thanks,

0 Andrew Kutzler over 1 year ago in reply to m s

Hi MS,

Hmm. Did you try a 15 uH inductor from another supplier? I don't see why it won't work.

Thanks,

Andrew

0 Andrew Kutzler over 1 year ago in reply to Andrew Kutzler

Hi MS,

I haven't heard from you in a while. I'm going to close the thread.

Thanks,
Andrew

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