TPS562209 - About UVP & Vout discharge

Hide

Guru 21045 points

Other Parts Discussed in Thread: TPS562209, TPS562201, TPS562208

Hi Team,

We would like to know about UVP & Vout discharge

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[Q1]

Does this device have the output voltage discharge function?

If yes, could you please let us know the discharge resistance value?

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[Q2]

If this device have the output voltage discharge, does this become active when UVP work?

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[Q3]

I show operation of UVP in the figure.

Please tell me if I make a mistake.

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Regards,

Kanemaru

over 9 years ago

0 Hide over 9 years ago

Guru 21045 points

Hi Team,

Would you tell me about the progress on this matter?

I’m looking forward to hearing from you.

Regards,

Kanemaru

0 JohnTucker over 9 years ago in reply to Hide

TI__Guru**** 191445 points

So far as I know, there is no output discharge function. The datasheet does not contain much details about the UVP function. I will have to check it. I think the IC designer is out of the office until the end the year though.

0 Hide over 9 years ago in reply to JohnTucker

Guru 21045 points

Hi John-san,

Thank you always for your kind support!

If you could reply by next week, it would be very helpful.

Would you contact the IC designer?

I'd greatly appreciate your verification.

Regards,

Kanemaru

0 Eric Guo1 over 9 years ago in reply to Hide

TI__Intellectual 2590 points

kanemaru-san,

Please find new data sheet to the Hiccup on time and delay time.

http://www.ti.com/lit/ds/symlink/tps562201.pdf

The hiccup off time is 15ms and on time is 1.8ms.

thanks!

0 Eric Guo1 over 9 years ago in reply to Eric Guo1

TI__Intellectual 2590 points

kanemaru-san,

Hiccup off time is equal to hiccup waiting time. it is 15ms in new DS.
thanks!

0 Hide over 9 years ago in reply to Eric Guo1

Guru 21045 points

Hi Eric-san,

Thank you for your response.

I would like to know about UVP sequence of TPS562209.

Therefore, I refer to the following URL.

http://www.ti.com/lit/ds/symlink/tps562209.pdf

However, URL which you introduced is the datasheet of TPS562201 and TPS562208.

So, I believe that Hiccup off time is 7ms(typ) and on time is 1ms(typ).

Is my understanding correct?

Regards,

Kanemaru

0 Hide over 9 years ago in reply to Hide

Guru 21045 points

Hi Eric-san,

Thank you always for your kind support!

Would you tell me about the progress on this matter?

I’m looking forward to hearing from you.

Regards,

Kanemaru

0 Eric Guo1 over 9 years ago in reply to Hide

TI__Intellectual 2590 points

Hi Kanemaru-san,

yes, you are right. Hiccup one time is 1ms, off time is 7ms for TPS562209.

thanks!

0 Hide over 9 years ago in reply to Eric Guo1

Guru 21045 points

Hi Eric-san,

Thank you for your prompt reply.

I understand that this device don’t have the output discharge function and UVP sequence is the following figure.

Please let me know if there are any mistakes in that.

Regards,

Kanemaru

0 Eric Guo1 over 9 years ago in reply to Hide

TI__Intellectual 2590 points

Please remove 12ms Hiccup time from your picture, we only has 7ms Hiccup off time. One more suggestion, youe horizontal axis's ratio is not make sense, 14us is very small time vs 7ms.
thanks!

0 Hide over 9 years ago in reply to Eric Guo1

Guru 21045 points

Hi Eric-san,

Thank you for your advice!

I revised my picture.

Regards,

Kanemaru

0 Eric Guo1 over 9 years ago in reply to Hide

TI__Intellectual 2590 points

Hi kanemaru-san,

yes, you are right.

thanks!

0 Hide over 9 years ago in reply to Eric Guo1

Guru 21045 points

Hi Eric-san,

Thank you always for your kind support!

I understand. Thank you very much.

Regards,

Kanemaru

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TPS562209 - About UVP & Vout discharge