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Class D Switching Power Amplifiers and Power D/A conversion

Designing the Hypex UCD2k with power supply
Designing the Hypex UCD2k with power supply
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Old 18th October 2020, 09:34 AM   #1
Trdat is offline Trdat
diyAudio Member
Join Date: Nov 2018
Location: Australia
Default Designing the Hypex UCD2k with power supply

I will attempt to make the UCD2k Hypex amp and have two pretty simple questions.

Is one SMP3KA700 enough for 2 UCD2K modules for a stereo set up? Better still how many can it handle out of curiosity? I ask this cause the Apollo Hypex UCD2k has two power supplies for the stereo configuration but not sure if its the SMPS3KA400 or K3700

I have also read that the UCD2K runs hot and needs sufficient cooling. The heat sink runs though the middle of the module with screw holes on the top. How do I add more heatsinks to that? Of course I will leave sufficient air space to the top of the module and the case with holes to breathe but I cant imagine how more heat sinks are attached.

Lastly if anyone would please care to explain what figures I am looking at when trying to figure out how many modules fit on one power supply. Can't figure this out for the life of me, it must be some simple figure that you just look at and add together. What figures on the datasheet?
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