LM3477: external components calculation tool

Toshiro Imi

Part Number: LM3477

hello,

Could you provide LM3477 external components calculation tool or spreadsheet ? Our customer encountered unstable output so he needs external calculation tool or spread sheet.

I have checked, but this device does not have WEBENCH support, no PSPICCE AC model. Power stage designer is the only tool but no user guide.

Could you also let us know what is "Vslope" stands for in Power Stage Designer.

Best regards,

over 2 years ago

0 Tahar Allag over 2 years ago

TI__Mastermind 30990 points

Hello Toshiro,

this device is old device and no a lot design tools was done for it, there is an EVM as below

https://www.ti.com/lit/ug/snva037f/snva037f.pdf?ts=1661440961631&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLM3477%253FkeyMatch%253DLM3477

Is there is away you can share the Schematic and layout with the VIN, VOUT, IOUT conditions so ew can review?

Thanks!

Tahar

0 Toshiro Imi over 2 years ago in reply to Tahar Allag

TI__Expert 6790 points

Hi Tahar,

Thank you very much for your help. I have created a new thread in INTERNAL e2e and put our customer test circuit and test result.

Please review and let me know how to improve the performance,

Best regards,

T.Imi

0 Tahar Allag over 2 years ago in reply to Toshiro Imi

TI__Mastermind 30990 points

Thanks Toshiro-san,

I will look into that and close this .

Thanks!

Tahar

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LM3477: external components calculation tool