TPS54478 - Question of datasheet P.22 Figure 35

Hiroshi Katsunaga

Mastermind 6480 points

Other Parts Discussed in Thread: TPS54478

Hello,

My customer has a question about TPS54478.

[Q]

What does C3 of Figure 35(datasheet p.22) implement it for?

Is this necessary?

Regards,

Hiroshi Katsunaga

over 11 years ago

0 JohnTucker over 11 years ago

TI__Guru**** 191445 points

It's been a few years since I worked with that and I don't remember directly. Let me see if I have some notes on it and I'll get back to you.

0 Hiroshi Katsunaga over 11 years ago in reply to JohnTucker

Mastermind 6480 points

Hi, John.

Thank you for your fast reply.

I will wait for your additional comment.

Regards,

Hiroshi Katsunaga

0 Matt Schurmann over 11 years ago in reply to Hiroshi Katsunaga

TI__Genius 11095 points

C3 appears to be on the BOM to filter noise on the EN pin. It's not necessary, but it might be wise to add a placeholder on the BOM for it just in case.

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TPS54478 - Question of datasheet P.22 Figure 35