Datasheet

UG-320 Evaluation Board User Guide
Rev. A | Page 42 of 48
APPENDIX I—TRANSFORMER SPECIFICATIONS
Table 8. Transformer Specifications
Parameter Min Typ Max Unit Notes
Core and Bobbin ETD 29 horizontal, 3F3 or equivalent
Primary Inductance 4.25 mH Pin 1 and Pin 3
Leakage Inductance 7 µH Pin 1 and Pin 3 with all other windings shorted
Resonant Frequency 850 kHz Pin 1 and Pin 3 with all other windings open
10180-086
1
44T SPLIT PRIMARY
2 × 28AWG
4T, COPPER FOIL,
10mil
3
12, 13, 14
8, 9, 10
Figure 88. Transformer Electrical Diagram
3
2
8, 9, 10
12, 13, 14
2
1
10180-087
Figure 89. Transformer Construction Diagram
25.4mm
35mm MAX
38mm MAX
5.08mm
32mm MAX
13 12 11 10 9 8 7
1 2 3 4 5 6
10180-088
Figure 90. Transformer Bobbin Diagram