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Class D Switching Power Amplifiers and Power D/A conversion

Class-D modules no-signal power
Class-D modules no-signal power
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Old 27th June 2006, 08:33 AM   #1
Pierre is offline Pierre  France
Join Date: Nov 2004
Location: Paris
Default Class-D modules no-signal power

Hello all.
Just for my reference and curiosity. What is the idle power consumption of several Class-D modules? I mean during power-on with no signal (not in shutdown mode)
Hypex UCD400 says around 8W at +/-65V, for UCD700 that's around 15W with +/-90V rails, but have no data about ZAPPulse, etc. Anyone can help?
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Old 28th June 2006, 11:38 AM   #2
ssanmor is offline ssanmor  Spain
diyAudio Member
Join Date: Jan 2002
Location: Madrid
Our coldamp BP4078 modules, when connected with the main supply only (no external gate or modulator voltage), lose around 10W at +/-60V rails, less with lower voltage, obviously. At that voltage they can output around 700W at 2 ohm.
You can reduce around 3W with external +/-12V for the modulator, and another 3W if you feed the gate driver externally too.
Shutdown power consumption is around 5W.
Hope this helps.
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