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Hi Ying , Thanks for the details . is this same used in PMP4478 reference ? pls confrim
Hi, Ram,
We always use the primary inductance Lp for calculation. It is 650uH for this transfromer. We don't need the secondary inductance value.
For wire size, primary windings employ about 0.2mm Diameter (AWG 32) wire and secondary windings use 0.4mm diameter (AWG 26) wire. We use three wires in parallel on secondary.
Turn ratio is 77:10:5. Thanks!