TPS2544 / Vout sequence , Tdscg specification for TPS2544 and TPS2543

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: TPS2544, TPS2543

Hello,

I have some questions about TPS2544.

Please see the attached file as my questions.

7080.TPS2544 Questions.pdf

<Q1>

Could you tell me the reason why tDCHG of TPS2544 was increasedfrom "205ms - 450ms" to "1.3s - 2.9s" in comparison with TPS2543 ?

<Q2>

Are Vout sequence about following pattern 1 - 3 correct ?

If no, Could you write the Vout Sequence for pattern 1-3 ?

Best Regards,

Ryuji Asaka

over 11 years ago

0 Eric Wright over 11 years ago

TI__Mastermind 42795 points

Hello,

Unfortunately, the attachment did not come through so I cannot see part of the question.

For Q1, TPS2544/5/6 are newer than TPS2543 and the most reasonable explanation is that the discharge time was extended to allow more PD devices to fully reset before being powered up again.

0 Ryuji over 11 years ago in reply to Eric Wright

Guru 20090 points

Hello Eric san,

Thank you for the reply.

Thus, I would like to send the file directly to you.

Could you please contact to below my e-mail address ?

asaka-r@clv.macnica.co.jp

For Q1,

Please let me know the meaning of "more PD devices".

I can't find any information from the datasheet.

If there is any example of connection difference between TPS2543 and TPS2544 , please let me know .

Best Regards,

Ryuji Asaka

0 Ryuji over 11 years ago in reply to Ryuji

Guru 20090 points

Hello Eric san,

Sorry for bothering you.

I attched the file for Q2 again.

Could you check this attached file ?

6786.20140204_TPS2544 Questions.pdf

If yes, please let me know the answer for Q2 and Q1.

If no, please contact to below e-mail address directly.

Then, I send the pdf file by e-mail.

asaka-r@clv.macnica.co.jp

Best Regards,

Ryuji Asaka

0 Eric Wright over 11 years ago in reply to Ryuji

TI__Mastermind 42795 points

Hello,

I can see the file now and will check with our China team for the questions.

0 Ryuji over 11 years ago in reply to Eric Wright

Guru 20090 points

Hello Eric san,

Thank you for your confirmation.

I wait the reply.

Best Regards,
Ryuji Asaka

0 Ryuji over 11 years ago in reply to Ryuji

Guru 20090 points

Hello Eric san,

Are there any update for this inquiry ?

Sorry for bothering you but I must reply this issue to our customer until tomorrow.

Thus please let me know the answer of below inquiry.

-------------

Please let me know the meaning of "more PD devices".

I can't find any information from the datasheet.

If there is any example of connection difference between TPS2543 and TPS2544 , please let me know

Are Vout sequence about following pattern 1 - 3 correct ?

If no, Could you write the Vout Sequence for pattern 1-3 ?

-------------

Best Regards,

Ryuji Asaka

0 Milo Zhu over 11 years ago in reply to Ryuji

TI__Intellectual 2795 points

Let us communication offline.

Power management

Power management forum

TPS2544 / Vout sequence , Tdscg specification for TPS2544 and TPS2543