TPA3255: INDUCTOR for TPA3255 Output choke.

JULIAN DE ROSS

Part Number: TPA3255

Dear Forum

I'm looking for a small inductor to use with my 3255 project. Smaller than those used in the EVM and other clones.

Can I get a comment on the suitability of this unit for which the L vs I graph is shown?

I see that even at 8amps, "L" is still above the Lmin of 5uH for the 3255.
I'd like to use this, or at least give it a try.
Am I missing something?
Cheers

Julian

over 4 years ago

0 Xiaolin Qin over 4 years ago

TI__Expert 6295 points

hello, could you share our team you max output power and PVDD, enviroment temp etc. application detailed? we will propose inductor for you.

0 Robert Clifton56 over 4 years ago in reply to Xiaolin Qin

TI__Mastermind 20830 points

Hi Julian,

So we choose inductors that retain most of it's inductance till it reaches it's current saturation limit. This is done so you are maintaining your LC filter cutoff frequency.

Best Regards,
Robert Clifton

0 JULIAN DE ROSS over 4 years ago in reply to Robert Clifton56

Intellectual 450 points

Thanks Rob again.
It's sinking in :)
Cheers
J

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TPA3255: INDUCTOR for TPA3255 Output choke.