FAN103_10 Datasheet, PDF (14/16 Pages) Fairchild Semiconductor – Primary-Side-Regulation PWM Controller (PWM-PSR)

Typical Application Circuit (Continued)
Transformer Specification
ƒ Core: EE16
ƒ Bobbin: EE16
Figure 29. Bobbin Winding Diagram
Notes:
4. When W4R’s winding is reversed winding, it must wind one layer.
5. When W2 is winding, put 1 layer tape after wind first layer.
NO
W1
W2
W3
W4R
TERMINAL
S
F
4
5
3
1
1
7
9
WIRE
Ts
2UEW 0.23*2
15
40
2UEW 0.17*1
40
37
COPPER SHIELD
1.2
TEX-E 0.6*1
9
CORE ROUNDING TAPE
INSULATION
Ts
2
1
0
2
3
3
3
BARRIER
Primary Seconds
Primary-Side Inductance
Primary-Side Effective Leakage
Pin
1－3
1－3
Specification
1.75mH ± 5%
80μH ± 5%
Remark
100kHz, 1V
Short one of the secondary windings
© 2010 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.3
14
www.fairchildsemi.com