Can this schematic actually produce 12V 60A output?

prepka

Joined Oct 5, 2020
30
There are several serious mistakes I see in the circuit shown. In order for the fuse not to blow on turn on a higher starting resistance of the NTC is needed. The drive voltage should be higher so a 7815 should gave been selected. A resistance is needed in series with diode on the gate to prevent blowing the lower drive transistor on the IR2110. There are no current limit sense resistors to protect the two half bridge fets. The output diode is far too small for the current requirements. The output capacitor ripple current rating will be exceeded as is the input capacitor also. Doubtful that the regulation will work as intended.
 

Ian0

Joined Aug 7, 2020
10,277
The drive voltage is perfectly fine at 12V. Look at the IRF360 datasheet - the Id/Vgs graph doesn't even go beyond Vgs=9V.
 

raszpel

Joined Jan 9, 2012
27
You should check out server PSU's a some of the higher amp models have pins on the end card connector for parallel or master/slave configuration that would give you the 60 amps with both of the supplies. If you used a matched pair of PSU's that were around 45 amps then you would have a shared system with a total surge potential of 90 amps at 12 volts, The positive thing of using larger server PSU's is that if one were to start outputting lower amps you system would still operate and not shut down or cause damage to your LED array. Just search for parallel Server PSU you will find a lot of helpful videos and they will not put your life or your array at risk.
 
If all you need is 12v at 60A, you should simply buy a 1200W HP server PSU from ebay. You can get platinum rated ones for US$ ~40 and it will give you up to 100A if you power it from 240v mains. From 120v they still put out up to 75A.
If you need the 24v capability, you can create a boost circuit pretty easily with something like a TL494CN pwm controller.
 
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