FSFR1900 Fairchild Semiconductor, FSFR1900 Datasheet - Page 15

• Manufacturer Part Number: FSFR1900
• Description: IC SWIT PROG OVP OCP 9SIP
• Manufacturer: Fairchild Semiconductor

Specifications of FSFR1900

• Output Isolation: Isolated
• Frequency Range: 94 ~ 106kHz
• Voltage - Input: 14.5 ~ 25 V
• Voltage - Output: 540V
• Power (watts): 300W
• Operating Temperature: -40°C ~ 130°C
• Package / Case: 9-SIP
• Switch Type: High Side/Low Side
• Power Switch Family: FSFR1900
• Input Voltage: 400V
• Power Switch On Resistance: 740mOhm
• Number Of Outputs: Single
• Mounting: Through Hole
• Supply Current: 7mA
• Package Type: SIP
• Operating Temperature (min): -40C
• Operating Temperature (max): 130C
• Operating Temperature Classification: Automotive
• Pin Count: 9
• Power Dissipation: 11.8W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2007 Fairchild Semiconductor Corporation
FSFR series Rev.1.0.9
Typical Application Circuit
Usually, LLC resonant converters require large leakage inductance value. To obtain a large leakage inductance,
sectional winding method is used.
Primary-Side Inductance (L
Primary-Side Effective Leakage (L
Core: EER3542 (Ae=107 mm
Bobbin: EER3542 (Horizontal)
N
N
N
s1
s2
p
2
6
N
p
Pins (S
EC35
16 → 13
12 → 9
8 → 1
→
F)
p
12
10
13
)
9
N
N
s2
s1
2
r
)
)
(Continued)
Figure 30. Transformer Construction
Pins
1－8
1－8
0.12φ×30 (Litz Wire)
0.1φ×100 (Litz Wire)
0.1φ×100 (Litz Wire)
Wire
Specifications
630 μ H ± 5%
135 μ H ± 5%
15
Turns
36
4
4
Short One of the secondary Windings
100kHz, 1V
Remark
Bifilar Winding
Bifilar Winding
Note
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