TPS23757EVM: Could you please tell me how to change TPS23757 EVM output voltage to 6V?

Kazuya Nakai59

Guru 21285 points

Part Number: TPS23757EVM
Other Parts Discussed in Thread: TPS23757

Hello guys,

One of my customers is going to use TPS23757 for their new POE products.

Also they will refer to the schematic in SLVU318B.

But they want to change the output voltage from 5V to 6V for driving 5V analog circuits via LDO.

So could you please tell me how to change TPS23757 EVM output voltage from 5V to 6V?

All of parts which listed in table 5 on page11 of SLVU318B are needed to be changed?

Your reply would be much appreciated.

Best regards,

Kazuya Nakai.

0 Michael Pahl over 5 years ago

Hello Kazuya,

You would probably just need to change the feedback resistors for 6V: R32 & R34.

However it would be good to calculate the feedback components (C29, C30, R33, R28).

I would also measure VC just to be sure, but I calculated it and it seems okay.

If this post answers your question, please indicate so by marking this thread as resolved. Thank you.

Regards,

Michael P.

Applications Engineer

Texas Instruments

0 Michael Pahl over 5 years ago in reply to Michael Pahl

for more equations on designing a flyback.

If this post answers your question, please indicate so by marking this thread as resolved. Thank you.

Regards,

Michael P.

Applications Engineer

Texas Instruments

0 Kazuya Nakai59 over 5 years ago in reply to Michael Pahl

Guru 21285 points

Hello Michael,

Thank you very much for your reply.

It is very helpful for the customer and me.

Thank you again and best regards,

Kazuya.

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