Data Sheet

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSQ-Series • Rev. 1.1.3 29
FSCQ-Series — Green Mode Fairchild Power Switch (FPS™)
FSCQ1265RT Typical Application Circuit (Continued)
EER4042
N
24V
N
a
7
13
14
15
16
17
18
N
140V
/2
N
8.5V
N
15V
N
p1
N
p2
1
2
3
4
5
6
8
9 10
11
12
N
140V
/2
N
8.5V
N
140V/2
N
P2
N
P1
N
140V/2
N
24V
N
15V
N
a
Figure 46. Transformer Schematic Diagram
Winding Specification
No
Pin (s→f)
Wire
Turns
Winding Method
N
24
18–17
0.65φ × 2
8
Space Winding
N
P1
1–3
0.1φ × 10 × 2
20
Center Winding
N
140V
/2
16–15
0.1φ × 10 × 2
23
Center Winding
N
p2
3–4
0.1φ × 10 × 2
20
Center Winding
N
140V
/2
15–14
0.1φ × 10 × 2
22
Center Winding
N
8.5V
12–13
0.6φ × 1
3
Space Winding
N
15V
11–10
0.6φ × 1
6
Space Winding
N
a
7–6
0.3φ × 1
13
Space Winding
Electrical Characteristics
Pin
Specification
Remarks
Inductance
1–4
315 μH ±5%
1 kHz, 1 V
Leakage Inductance
1–4
10 μH Max.
2nd all short
Core & Bobbin
 Core: EER4042
 Bobbin: EER4042 (18 Pin)
 Ae: 153 mm
2