Good morning,
I have realized the circuit of PMP7899 project. In order to do this, I required the transformer at Coilcraft.
So I mounted the circuit, but it doesn't work correctly:
AT NO LOAD
If I supply the circuit with 9V, I have at output 27V;
If I supply the circuit with 16V, I have at output 29V.
I noted that my transformer (that I requested at Coilcraft as NA6264-AL), has the secondary only at two pins: 8 and 11.
If I see the PMP7899 schematic I note that the transformer has the secondary at three couples of pins: 8-11; 7-10 and 9-12, and the 7,8,9 and 10,11,12 are respectively cortocircuited.It seems that there must be three parallels secondaries..
Can my problem be this?
What is the exactly transformer that I must to use? Can I have the correct datasheet of transformer?
Best regards,
Marco.