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Class D Switching Power Amplifiers and Power D/A conversion

Infineon MA12070 Class D
Infineon MA12070 Class D
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Old 13th October 2021, 08:07 AM   #501
Yatsushiro is offline Yatsushiro  France
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Quote:
Originally Posted by Michael Xiao View Post
Hi,
I'm the designer with PL-AD-150 from Shenzhen PILLOR, any problem or suggestion let me know, and I will answer it try my best, thanks!
Are you also the designer of the PL-DD-140W board? I have two of them, the first of which blew when fed with 24V DC, taking the attached RPi down with it.

Can you confirm that the V1.3 board is safe to be fed with 24V DC? My second board is currently running at 12V, I will try 18V next but am a bit wary of going to 24V in case it blows again.

Thanks
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Old 13th October 2021, 08:45 AM   #502
Michael Xiao is offline Michael Xiao
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Yes, PL-DD-140W was designed by me. The board's recomand max voltage is 20V, over 22V will burning CH224K(absolute max voltage is 22V) maybe, and other ICs are support max 26V, so if you want put Vin 24V, you can remove CH224K(If you remove CH224K, the cost of it is that you connect the board with PD charger by Type-C connecter will remain 5V). On the other hand, I need you confirm if your board was burned CH224K or not, if the other IC was burned , so it will be the other questions. And I'm very sorry for bring to you some misguide at the board's silkscreen(26V).
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Old 13th October 2021, 09:22 AM   #503
maciekw is offline maciekw  Poland
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Quote:
Originally Posted by Michael Xiao View Post
Hi,
I'm the designer with PL-AD-150 from Shenzhen PILLOR, any problem or suggestion let me know, and I will answer it try my best, thanks!
Hi, is it possible to connect three modules PL-AD-150 to one SMPS? This question has been asked before but remained unanswered.
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Old 13th October 2021, 09:34 AM   #504
Michael Xiao is offline Michael Xiao
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Do you mean parallel three modules at VIN & GND with one SMPS? If it is. It's OK, and I can't list any reason to explain why it can't, or you can recomand me some potential mistake or damage.
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Old 13th October 2021, 10:08 AM   #505
maciekw is offline maciekw  Poland
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Thank you for the clarification.
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Old 13th October 2021, 11:00 AM   #506
Yatsushiro is offline Yatsushiro  France
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Quote:
Originally Posted by Michael Xiao View Post
Yes, PL-DD-140W was designed by me. The board's recomand max voltage is 20V, over 22V will burning CH224K(absolute max voltage is 22V) maybe, and other ICs are support max 26V, so if you want put Vin 24V, you can remove CH224K(If you remove CH224K, the cost of it is that you connect the board with PD charger by Type-C connecter will remain 5V). On the other hand, I need you confirm if your board was burned CH224K or not, if the other IC was burned , so it will be the other questions. And I'm very sorry for bring to you some misguide at the board's silkscreen(26V).
Hi Michael

Thanks for your reply. The photos below show the component that obviously burnt; I can't see any other damage. When it burnt, it also damaged the attached RPi beyond use.

I like to use laptop PSUs or 18V powertool batteries, so will not exceed 20V.

Click the image to open in full size.

Click the image to open in full size.
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Old 13th October 2021, 11:18 AM   #507
Yatsushiro is offline Yatsushiro  France
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Join Date: Mar 2016
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Quote:
Originally Posted by Michael Xiao View Post
Yes, PL-DD-140W was designed by me. The board's recomand max voltage is 20V, over 22V will burning CH224K(absolute max voltage is 22V) maybe, and other ICs are support max 26V, so if you want put Vin 24V, you can remove CH224K(If you remove CH224K, the cost of it is that you connect the board with PD charger by Type-C connecter will remain 5V). On the other hand, I need you confirm if your board was burned CH224K or not, if the other IC was burned , so it will be the other questions. And I'm very sorry for bring to you some misguide at the board's silkscreen(26V).
Can you advise whether the procedure defined in Section 4.5.2 of the attached document should be undertaken when using PL-DD-140W?


https://www.infineon.com/dgdl/Infine...6eef8084096be6
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Old 13th October 2021, 07:24 PM   #508
zek is offline zek
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Quote:
Originally Posted by Yatsushiro View Post
.. The photos below show the component that obviously burnt; ....
There is no photos...
Attached Images
File Type: png Screenshot 2021-10-13 at 20.21.37.png (6.8 KB, 157 views)
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Old 13th October 2021, 08:03 PM   #509
Yatsushiro is offline Yatsushiro  France
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Does this work?

Click the image to open in full size.


Click the image to open in full size.

Last edited by Yatsushiro; 13th October 2021 at 08:06 PM.
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Old 13th October 2021, 09:55 PM   #510
Solve is offline Solve  Sweden
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