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TL494 based high wattage computer power supplies?

jon5500

Oct 31, 2020
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Looking for brand/ model listings of any PC power supplies utilizing the TL494 and offering at least 20A on the 12V line. Thank you.
 

Harald Kapp

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Nov 17, 2011
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I doubt you will find one. The TL494 is a low voltage pwm controller (Vmax = 41 V). A PC power supply usually has a primary side (mains voltage) switch mode controller. A TL494 cannot be used efficiently in this application (note that it may be used with additional auxiliary circuitry, but that is not efficient neither in cost nor in power requirements).

What is the reason you're looking for a TL494 based power supply? 20 A on 12 V can be delivered by many off the shelf PC power supplies.
 

jon5500

Oct 31, 2020
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What is the reason you're looking for a TL494 based power supply? 20 A on 12 V can be delivered by many off the shelf PC power supplies.

Because they are the easiest type to modify for different currents and voltages. Although I never found a list of such ones anywhere, after rather intensive Googling, I did find what I was looking for
 
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