2. Transformer
Figure 45. Transformer Schematic Diagram of FAN7930B
3. Winding Specification
Position
No
Pin (S → F)
Wire
Turns
Winding
Method
Bottom
Top
Np
9, 10 → 7, 8
0.1φ×50
49 Solenoid Winding
Insulation: Polyester Tape t = 0.025mm, 3 Layers
NAUX
2→4
0.3φ
6
Solenoid Winding
Insulation: Polyester Tape t = 0.025mm, 4 Layers
Barrier Tape
TOP BOT Ts
1
4. Electrical Characteristics
Pin
Inductance
9, 10 → 7, 8
Specification
230μH ± 7%
Remark
100kHz, 1V
5. Core & Bobbin
Core: EER3124, Samhwa (PL-7) (Ae=97.9mm2)
Bobbin: EER3124
© 2010 Fairchild Semiconductor Corporation
FAN7930B • Rev. 1.0.2
19
www.fairchildsemi.com