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PDF FS6X1220RD Data sheet ( Hoja de datos )
| Número de pieza | FS6X1220RD | |
| Descripción | Fairchild Power Switch (FPS) | |
| Fabricantes | Fairchild Semiconductor | |
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FS6X1220R
Fairchild Power Switch (FPSTM)
www.fairchildsemi.com
Features
• Current Mode PWM Control With a Fixed Operating
Frequency (300kHz)
• Pulse by Pulse Current Limit
• Over Load Protection
• Over Voltage Protection
• Thermal Shutdown
• Built-in Auto-Restart Circuit
• Line Under Voltage Detection and Sleep on/off Function
• Internal High Voltage SenseFET (QFET)
• Supports Forward or Flyback Topology
Application
• DC-DC Converter
Description
The FS6X1220R is specially designed for an off-line DC-
DC converters with minimal external components. This
device is a current mode PWM controller combined with a high
voltage power SenseFET in a single package. The PWM
controller includes integrated fixed frequency oscillator, line
under voltage lockout, sleep on/off function, thermal
shutdown protection, over voltage protection, pulse-by-pulse
current limit and temperature compensated precise current
sources for a loop compensation. Compared with discrete
MOSFET and PWM controller solution, the FS6X1220R can
reduce total cost, component count, size and weight simulta-
neously increasing efficiency, productivity, and system
reliability. This device is well suited for DC to DC converter
applications up to 40W of output power.
TO-220F-5L
D2-PAK-5L
Internal Block Diagram
1
1. Drain 2. GND 3. VCC 4. Feedback 5. Line Sense
VLU
Line
Sense
5
VSL
Vcc
Idelay
FB 4
VSD
Vcc
Vovp
TSD
Line UVLO
Line UVLO
Vref
IFB 28R
R
OSC
Vcc good
Enable Vref
SQ
RQ
Vcc good
SQ
RQ
Vcc
3
9V/15V
Internal
Bias
Drain
1
Gate driver
2 GND
©2004 Fairchild Semiconductor Corporation
Rev.1.0.1
1 page  
FS6X1220R
Electrical Characteristics (Continued)
(Ta=25°C unless otherwise specified)
Parameter
Symbol
UVLO SECTION
Start Threshold Voltage
VSTART
Stop Threshold Voltage
VSTOP
OSCILLATOR SECTION
Initial Frequency
FOSC
Voltage Stability
FSTABLE
Temperature Stability (1)
∆FOSC
Maximum Duty Cycle
DMAX
Minimum Duty Cycle
DMIN
FEEDBACK SECTION
Feedback Source Current
IFB
Shutdown Feedback Voltage
VSD
Shutdown Delay Current
IDELAY
LINE SENSE SECTION
Line UVLO Threshold Voltage
VLU
Sleep On/Off Threshold Voltage
VSL
CURRENT LIMIT(SELF-PROTECTION)SECTION
Peak Current Limit (2)
IOVER
PROTECTION SECTION
Thermal Shutdown Temp (1)
TSD
Over Voltage Protection
VOVP
TOTAL DEVICE SECTION
Start Up Current
ISTART
Sleep Mode Current
ISLEEP
IOP
Operating Supply Current
IOP(MIN)
IOP(MAX)
Condition
VFB = GND
VFB = GND
-
12V ≤ VCC ≤ 23V
-25°C ≤ Ta ≤ 85°C
-
-
VFB = GND
VFB ≥ 6.9V
VFB = 5V
-
-
-
-
Vcc≥6.9V
VFB = GND, VCC = 14V
VUVLO = 1V, VCC = 16V
VFB = GND, VCC = 16V
VFB = GND, VCC = 12V
VFB = GND, VCC = 20V
Min.
14
8
270
0
0
72
-
0.7
6.9
4.0
2.4
1.5
2.82
140
23
-
-
-
Typ.
15
9
300
1
±5
80
-
0.9
7.5
5.0
2.55
1.8
3.2
160
25
60
300
10
Max.
16
10
330
3
±10
88
0
1.1
8.1
6.0
2.7
2.1
3.58
-
27
120
500
15
Note:
1. These parameters, although guaranteed at the design, are not tested in mass production.
2. These parameter indicates inductor current.
Unit
V
V
kHz
%
%
%
%
mA
V
µA
V
V
A
°C
V
uA
uA
mA
5
5 Page 
FS6X1220R
3.Winding Specification
No Pin (s→f)
Wire
Np1 2 → 1
0.3φ × 1
Insulation: Polyester Tape t = 0.050mm, 2Layers
Nvo1
9→6
0.3φ × 2
Insulation: Polyester Tape t = 0.050mm, 2Layers
Nvcc
3→4
0.2φ × 1
Insulation: Polyester Tape t = 0.050mm, 2Layers
Np2 2 → 1
0.3φ × 1
Outer Insulation: Polyester Tape t = 0.050mm, 2Layers
4.Electrical Characteristics
Turns
20
12
18
20
Winding Method
Solenoid Winding
Solenoid Winding
Solenoid Winding
Solenoid Winding
Inductance
Leakage Inductance
Pin
1-2
1-2
Specification
22uH ± 10%
2uH Max
Remarks
300kHz, 1V
2nd all short
5. Core & Bobbin
Core : EPC 19
Bobbin : EPC 19
Ae(mm2) : 22.7
6.Demo Circuit Part List
Part Value
Note
Resistor
R101 200K, 1/4W
-
R102
18K, 1/4W
-
R103 120K, 1/4W
-
R104
10K, 1/4W
-
R105
18, 1/4W
-
R106
3.9K, 1/4W
-
R201
1K, 1/4W
-
R202
1K, 1/4W
-
R203
33K, 1/4W
-
R204
15K, 1/4W
-
R205
3.9K, 1/4W
-
Capacitor
C101
47uF, 100V
Electrolytic Capacitor
C102
10nF, 50V
Ceramic Capacitor
C103 1.2nF, 200V
Ceramic Capacitor
C104
22uF, 50V
Electrolytic Capacitor
C105
47nF, 50V
Electrolytic Capacitor
Part
C201
C202
C203
-
-
D101
D102
D201
-
IC101
IC102
IC201
PC
-
-
-
Value
Note
330uF/16V
Electrolytic Capacitor
330uF/16V
Electrolytic Capacitor
10nF/50V
Ceramic Capacitor
--
--
Diode
UF4004
-
1N4148
-
MBRF10100
-
--
IC
FS6X1220RT
(3.2A, 200V)
KSC945
npn transistor
KA431(LM431)
Voltage reference
H11A817A
Photo coupler / QT
--
--
--
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet FS6X1220RD.PDF ] | |
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