FS6X0420R FAIRCHILD [Fairchild Semiconductor], FS6X0420R Datasheet - Page 11

• Manufacturer Part Number: FS6X0420R
• Description: Fairchild Power Switch (FPS)
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1
Typical Application Circuit
Features
Key Design Notes
1. Schematic
36Vdc~72Vdc
High switching frequency(300kHz)
High power density
Low component count
Enhanced system reliability through various protection functions
Capacitor C104 is employed to reduce the noise on sensed line voltage.
The delay time for over load protection is designed to be about 12ms with C103 of 22nF. If a faster triggering of OLP is required,
C103 can be reduced to 10nF.
DC Input
Voltage:
Application
PoE Device
C101
47uF
100V
C104
1nF
200k Ω
R101
15k Ω
R105
C102
22uF
50V
5
2
Output power
100k Ω
R102
GND
N.C
FS6X1220R
L/S
6
IC101
Drain
Vcc
Vfb
3
15W
1N4148
D102
4
1
R104
1Ω
EPC19
T 1 :
2.2nF
C301
1kV
C103
22nF
50V
P6KE160CA
Figure 21. Demo Circuit
D103
R301
10Ω
Input voltage
FOD2741
36-72Vdc
R221
15Ω
IC201
11
R210
1k Ω
R222
15Ω
R210
1kΩ
R223
15Ω
ST OS15L25G
C221
1nF
50V
30kΩ
R212
D201
C210
10nF
50V
C201
10nF
50V
Output voltage (Max current)
C222
1nF
50V
C202
10nF
50V
C203
10nF
R214
18k Ω
50V
C204
10nF
50V
5V (3.0A)
2.2uH
L201
R213
18k Ω
330uF
C205
16V
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Output :
5V / 3A