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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 14th October 2021, 12:43 AM   #511
Michael Xiao is offline Michael Xiao
diyAudio Member
Join Date: Oct 2021
Originally Posted by Yatsushiro View Post
Does this work?
The burned IC is CH224K and I had explained the reason why it will be burned in the last reply. For this board, First you can remove the burned IC and check the 5V power supply, then check the MA12070Pís IO haven't breakdown by Rpi.At last please confirm the max voltage is 20V, if you remove the CH224K firstly, you can put 24V.
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Old 18th October 2021, 10:52 AM   #512
maciekw is offline maciekw  Poland
diyAudio Member
Join Date: Nov 2004
Location: Warsaw
Default long cable

Hi Michael:
I have a question for you: with long speaker cables (5-6 meters) should I use additional output EMC filters for your amplifiers?
I want to use your amplifier modules to power my surround speakers for my home cinema.
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Old 18th October 2021, 02:47 PM   #513
ernperkins is online now ernperkins  United States
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In case you haven't seen it, here's the Infineon app note on using filters. It should answer your questions.

Last edited by ernperkins; 18th October 2021 at 02:48 PM. Reason: typo
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Old 19th October 2021, 06:07 PM   #514
maciekw is offline maciekw  Poland
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Join Date: Nov 2004
Location: Warsaw
Thank you for the linked document. However, while looking at the module board, I noticed that there is already a simple EMC filter on it under the heatsink. And when asking the question, I meant is it sufficient according to the board designer to remove the interference emitted by the longer cables?
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