Nano Power Inverter - Roll Your Own Style


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wiseguy

Guru

Joined: 21/06/2018
Location: Australia
Posts: 907
Posted: 03:16pm 16 May 2019      

Yes thats the circuit - I just noticed a typo a couple of posts ago it is a UCC3808 I used not a UCC3080. The UCC3808-2 part I used has been improved and is also available with many choices that should work fine, UCC2808X... and UCC3808X....

Make sure you avoid the UCC38083 & UCC38085 or 2808/3808-1 as they dont start until 12.5V is applied.

I used an EP17 core from here

The primary I used 18T of 0.2 - 0.25 not critical. The 3 secondaries were 20T of 0.2 -0.25 (or similar) you can even use kynar wire or wire wrap wire they all work fine.

The only start finishes that need to be observed are the 3 secondaries. I phased them so the 2 low drivers (1 winding) used one forward phase the other 2 two isolated windings for the high sides both used the other phase (note start dots on tx circuit).

I have boards on their way back from JLC if you want 1 or 2 to play with pm me your mailing address and Ill send it to you. Edited by wiseguy 2019-05-18
If at first you dont succeed, I suggest you avoid sky diving....
Cheers Mike