Subject: RE: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

From: "Tallada, Sandeep" <[email-masked]>
Date: Mon, 20 Feb 2023 08:32:14 +0000

It’s a great detail asiyab. Thanks you so much.
Could you please help posting this on below link : https://secure-web.cisco.com/1j26SO95E52JeM05dAjcsp3YqPDRvmGsvDEn4_GEg5OuJDoaOPitrQI_TXsT-ryqZftvXus0Py4FjSaxFB5HDVu3HiOCHQ_sC6H2rXcKVWzfZJ_TefaKcYmy2ABnoignBSJI-AP9eEh0Qbuk6LGatKvw01iB7gPe9nHPU2exZ3oI0uvb-6BS-cd8GzNQH0QU9UlYDUZuoDevQDfSr6OCvup7TTLaN50sGwBEIo2jW7J_C8MoR7bp3Ykf0s9MhqATCrIGMP0efA7UEMbF6Wqrra-QXnwp-52vbV1JFO1WYC-YADifPFQKZ3RAeakeYXVE64L-CeNVH8NRyY7le5caTtZr-KNOlyzrnryRrvh1ahsVIQhbqGy4y6xqPdbVcKnkVgczNiM53FE2IteW4C5FuvIAStbGKeP1oczHmAi0KIV216otao06n3L09yrkLnF5c5i0oXnUYNTOCxrv5KOmH7w/https%3A%2F%2Fe2e.ti.com%2Fp%2Faddpost

I will follow-up to get this resolved quickly.

Regards,
Sandeep

From: asiyab <[email-masked]>
Sent: Friday, February 17, 2023 1:12 PM
To: Tallada, Sandeep <[email-masked]>; Gupta, Akash <[email-masked]>
Cc: Kartik .Anand(NC Team) <[email-masked]>
Subject: Re: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

Dear Sir,
Please find the below observations,

  1.  By increasing input voltage gradually this IC is not generating output voltage. Observed at 4V the output voltage is increasing from 0V to 2V & then again decreasing to 0V. At this time some humming noise observed from the IC. If we make power-supply On/Off by increasing the input voltage, then at 7.5V it is generating 5V o/p.
  2.  Measured the voltages for both ICs & below are the details.

  *   Also observed when we keep any conductor/measuring probe on VFB1 & VFB2 pins then the Output is getting decreased from 5V to 0V.

--

Thanks & Regards,

Asiya,

NC Analysis.

On 2/16/2023 7:57 PM, Tallada, Sandeep wrote:
Asiya, Sorry for the delay in response. Could you please help me understand on how much it is generating and you see any ripples or any other behavior you observed ?

Regards,
Sandeep

From: asiyab <[email-masked]><mailto:[email-masked]>
Sent: Saturday, February 11, 2023 12:00 PM
To: Tallada, Sandeep <[email-masked]><mailto:[email-masked]>; Gupta, Akash <[email-masked]><mailto:[email-masked]>
Cc: Kartik .Anand(NC Team) <[email-masked]><mailto:[email-masked]>
Subject: Re: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

Dear Sir,
Please inform, if any update on below issue.

--

Thanks & Regards,

Asiya,

NC Analysis.

On 2/7/2023 11:12 AM, asiyab wrote:
Dear Sir,
This circuit is in our hardware board. 5V output is not generating when 7.5V is applied from Power-supply.

--

Thanks & Regards,

Asiya,

NC Analysis.

On 2/7/2023 11:09 AM, Tallada, Sandeep wrote:
Asiyab, You have the hardware board for the below or based on the simulations you are saying 5V is not seen.
Also if it is simulations, is it performed in TINA, can you send me the file ?

Regards,
Sandeep

From: asiyab <[email-masked]><mailto:[email-masked]>
Sent: Tuesday, February 7, 2023 10:58 AM
To: Tallada, Sandeep <[email-masked]><mailto:[email-masked]>; Gupta, Akash <[email-masked]><mailto:[email-masked]>
Cc: Kartik .Anand(NC Team) <[email-masked]><mailto:[email-masked]>
Subject: Re: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

Dear Sir,
Please find the below circuit.

--

Thanks & Regards,

Asiya,

NC Analysis.

On 2/7/2023 2:55 AM, Tallada, Sandeep wrote:
Asiya, Could you please help me with the circuit to better asses the reason why you are not seeing 5V on TPS54294PWP.

Regards,
Sandeep

From: Gupta, Akash <[email-masked]><mailto:[email-masked]>
Sent: Monday, February 6, 2023 10:04 AM
To: asiyab <[email-masked]><mailto:[email-masked]>
Cc: Tallada, Sandeep <[email-masked]><mailto:[email-masked]>
Subject: RE: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

+Sandeep for support here.

Thanks & Regards,
Akash Gupta
+91-9958349851

All information in this email and in any related correspondence is provided “AS IS” and is subject to TI’s Important Notice (http://secure-web.cisco.com/1_vvY8xpABlF54fWtR1kdanV6VfwwNcS0y1tMQdBQzQG9BZUOwf222ostd2sj6gT7_kScZqCjuXPKumH_Wpq0JfbqO9Lac1YK0-6leqPzsPfqU2LUzE0RweZxRrvzxKky7-jA4jQE7BkDnNAd5qn-EQYgBpFTA9Kl9j2kQkcuCcYBWO0lMTL1kaESn-IObYNyLKGHdy9Dn0pg-Ff_am5RZ7EO1ImEwp82UoADl3NYyJXjw_CknoA_7LqTp3G_l69b44SLCYakVtft28r6Ja_FmFpP-heyCXJolcZQMTqpq3lVt752LN7y_vPMVNF0Z4YFO9VDZzX4dnFYk_d8bn5Fz9dhx_2xnRvwUFgJUjRj1k0PLSDderBImYgiuDMgZKKQKDQq71FR-CTud6d_I2zJNLCYAd7j31rOj5YYJp0kwunH7t5FTL_aN33-aPiGbODLWMaozwkPvXLA2WOMDdxkGQ/http%3A%2F%2Fwww.ti.com%2Fcorp%2Fdocs%2Flegal%2Fimportant-notice.shtml<http://secure-web.cisco.com/1d5yxlAztxwlqHKl7nKhSPebXnV4EeyK2uWYUafqSWdhUveYToXGOJzgiUafrajwgUHDLy6MAuedUT8BIfXVA_zwJvrdlsUgSim053NHBeKpvIb2S2r1ppB3fAdi2ViGC8TvYeAXbHvLafNyCs7cdg2OQsaWcSfiQSnW_fW1fZ3e2UOacJakJ-t8M0WXjaYzflO23qwVxlDRt4muwGLS4XqqBrWjSK0N4ikJofp80xyWbigN1Z87AOL_FEh7iRCQhZqdLc3yostlDV0taC4hB2G8wQEZT8wKa3Zxt367OrugZ352wnRUzUBJJiN2yvWH7tGszc4kgvK_U4TkhwmZ8AL7L3sZhXqUxZkzdqaCkk-a2d7NBguWh0qphp-RxGZ_y9dejuRPpmeh5nm1xHWP2RQ/http%3A%2F%2Fwww.ti.com%2Fcorp%2Fdocs%2Flegal%2Fimportant-notice.shtml>)

From: asiyab <[email-masked]<mailto:[email-masked]>>
Sent: Saturday, February 4, 2023 1:30 PM
To: Gupta, Akash <[email-masked]<mailto:[email-masked]>>
Subject: [EXTERNAL] P/No: TPS54294PWP & TPS542941PWP

Dear Sir,
As discussed, please let me know the difference between these two parts P/No: TPS54294PWP & TPS542941PWP except OVP feature.

In our circuit, we are generating 5V & 3.3V outputs by giving input voltage 7V. Same circuit is working fine with P/No:TPS542941PWP but when we replace with part:TPS54294PWP it is not generating the output voltage-5V.

--

Thanks & Regards,

Asiya,

NC Analysis,

Medha Servo Drives Pvt Ltd.
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--

Thanks & Regards,

Asiya,

NC Analysis.

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Disclaimer:The information contained in this e-mail and/or attachments to it may contain confidential data (or) privileged information of Medha. If you are not the intended recipient, any dissemination, use in any manner, review, distribution, printing, copying of the information contained in this e-mail and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify the sender and immediately delete the message and attachments (if any) permanently.
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Disclaimer:The information contained in this e-mail and/or attachments to it may contain confidential data (or) privileged information of Medha. If you are not the intended recipient, any dissemination, use in any manner, review, distribution, printing, copying of the information contained in this e-mail and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify the sender and immediately delete the message and attachments (if any) permanently.
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