LM5180-Q1: Question about the Datasheet

Chang-Yi Cheng

Prodigy 80 points

Part Number: LM5180-Q1

Currently, I want to design the flyback converter to supply the power for gate driver IC

And survey and study the LM5180-Q1 in TI

I read the datasheet and have the question about this component.

Please help me give the feedback about it.

However I think that it typo in datasheet.(page 26~27)

but double checking is good

9 months ago

0 Gui He 9 months ago

TI__Mastermind 18575 points

Hi YiCheng

Are you referring to the LM5180-Q1 datasheet? Sorry that I didn't find the equation in your screen shot. Can you share the equation number?

Thank you

0 Chang-Yi Cheng 9 months ago

Prodigy 80 points

LM5180-Q1 65-VIN PSR Flyback DC/DC Converter with 100-V, 1.5-A Integrated MOSFET datasheet (Rev. C) (ti.com)

page 26~27(equation32,33,34)

0 Gui He 9 months ago in reply to Chang-Yi Cheng

TI__Mastermind 18575 points

The first equation in your screen shot, I didn;t find that in the datasheet, but should be referring to the Figure 51; the other 3 equation should be referring to Figure 38.

In Figure 38. the Nps is 1(primary winding / the Vout1 _secondary). so I think we don't have question for the equation 32,33 here. For equation 34, yes it might be better to use a symbol like 'Nps_2' since it means the turns ratio for "primary winding /the Vout2 _secondary"

Thanks and best regards.

0 Chang-Yi Cheng 9 months ago in reply to Gui He

Prodigy 80 points

+1 Gui He 9 months ago in reply to Chang-Yi Cheng

TI__Mastermind 18575 points

Hi Chang-yi

As seen in the image you pasted, I believe the equation 32~34 is related to Figure-38. Do we have problem here?

Thanks

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LM5180-Q1: Question about the Datasheet