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November 2013
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1
FAN7602C — Green Current Mode PWM Controller
FAN7602C
Green Current Mode PWM Controller
Features
Green Current Mode PWM Controller
Random Frequency Fluctuation for Low EMI
Internal High-Voltage Startup Switch
Burst Mode Operation
Line Voltage Feedforward to Limit Maximum Power
Line Under-Voltage Protection
Latch Protection & Internal Soft-Start (10ms) Function
Overload Protection (OLP)
Over-Voltage Protection (OVP)
Over-Temperature Protection (OTP)
Low Operation Current: 1 mA Typical
Available in the 8-Lead SOP Pack age
Applications
Adapter
LCD Monitor Power
Auxiliary Power Supply
Related Resources
AN-6014- Green Current Mode PWM Controller
(Except for frequency fluctuation part in AN-6014)
Description
The FAN7602C is a green current-mode PW M controller.
It is specially designed for off-line adapter applications;
DVDP, VCR, LCD monitor applications; and auxiliary
power supplies.
The internal high-voltage startup switch and the burst
mode operation reduce the power loss in standby mode.
As a result, the input power is lower than 1 W when the
input line voltage is 265 VAC and the load is 0.5 W. At
no-load condition, input power is under 0.15 W.
The maximum power can be limited constantly,
regardless of the line voltage change, using the power
limit function.
The switching frequency is not fixed and has random
frequency fluctuation.
The FAN7602C includes various protections for the
system reliability and the internal soft-start prevents the
output voltage over-shoot at startup.
Ordering Information
Part Nu m b er Operating Junction
Temperature Package Packing Method Top Mark
FAN7602CMX -40°C to +150°C 8-Lead Small Outline Package (SOP) Tape and Reel FAN7602C
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 2
FAN7602C — Green Current Mode PWM Controller
Typi cal Application Diagram
FAN7602C
LUVP
CS/FB
GND
V
STR
V
CC
Out
Latch/
Plimit NC
Figure 1. Typical Flyback Application
Internal Block Diagram
Soft-
Start
Delay
Circuit
GND
Plimit
Offset
5V Ref
VCC
LUVP
OUT
CS/FB
UVLO
6
19V
OVP
12V/8V
5
3
0.95V/0.88V
8
1
4
VSTR
2V/1.5V
4V
Latch/
Plimit 2
Plimit
Offset
Generator
Driver
Circuit
Latch
OLP
OLP
10ms
Soft-Start SS End
PWM
Block
Power Limit
Soft-Start
PWM+
Plimit
Offset
Plimit
Offset
SS End
LUVP
Reset
Circuit
OSC
Latch
OVP
OLP
VCC
TSD Auto Restart
Protection
Latch
Protection
Random
Figure 2. Functional Block Diagram
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 3
FAN7602C — Green Current Mode PWM Controller
Pin Configuration
FAN7602C
1 2
658 7
3 4
Latch/
Plimit GNDCS/FBLUVP
VSTR NC VCC Out
YWW
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin # Name Description
1 LUVP Line Under-Voltage Protection Pin. This pin is used to protect the set when the input
voltage is lower than the rated input voltage range.
2 Latch/Plimit Latch Protection and Power Limit Pin. When the pin voltage exceeds 4 V, the latc h
protection works. The latch protection is reset when the VCC voltage is lower than 5 V. For
the power limit function, the OCP level decreases as the pin voltage increases.
3 CS/FB Current Sense and Feedback Pin. This pin is used to sense the MOSFET current for
the current mode PWM and OCP. The output voltage feedback information and the
current sense information are added using an external RC filter.
4 GND Ground Pin. This pi n is used for the ground potential of all the pins. For proper operation,
the signal ground and the power ground should be separated.
5 OUT Gate Drive Output Pin. This pin is an output pin to drive an external MOSFET. The peak
sourcing current is 450 mA and the peak sinking current is 600 mA. For proper operation,
the stray inductance in the gate driving path must be minimized.
6 VCC Supply Voltage Pin. IC operating current and MOSFET driving current are supplied
using this pin.
7 NC No Connection.
8 VSTR Startup Pin. This pin is used to supply IC operating current during IC startup. After
startup, the internal JFET is turned off to reduce power loss.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 4
FAN7602C — Green Current Mode PWM Controller
Absol ute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In
addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maxim um ratings are stress ratings only.
Symbol Parameter Min. Max. Unit
VCC Supply Voltage 25 V
IO Output Current -600 +450 mA
VCS/FB CS/FB Input Voltage -0.3 20.0 V
VLUVP LUVP Input Voltage -0.3 10.0 V
VLatch Latch/Plimit Input Voltage -0.3 10.0 V
VSTR VSTR Input Voltage 600 V
TJ Junction Temperature +150 °C
Recommended Operating Junction Temperature -40 +150
TSTG Storage Temperature Range -55 +150 °C
PD Power Dissipation 1.2 W
ESD Electrostatic Discharge Capability Human Body Model, JESD22-A114 3500 V
Charged Device Model, JESD22-C101 2000
Thermal Impedance
Symbol Parameter Value Unit
θJA Thermal Resistance(1), Junction-to-Ambient 150 °C/W
Note:
1. Regarding the test environment and PCB type, please refer to JESD51-2 and JESD51-10.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 5
FAN7602C — Green Current Mode PWM Controller
Electrical Characteristics
VCC = 14V, TA = -25°C~125°C, unless otherwise specified.
Symbol Parameter Condition Min. Typ. Max. Unit
Startup Section
ISTR VSTR Startup Current VSTR = 30 V, TA = 25°C 0.7 1.0 1.4 mA
Under Voltage Lock Out Section
Vth_start Start Threshold Voltage VCC Increasing 11 12 13 V
Vth_stop Stop Threshold Voltage VCC Decreasing 7 8 9 V
HY_UVLO UVLO Hysteresis 3.6 4.0 4.4 V
Supply Current Section
IST Startup Supply Current TA = 25°C 250 320 µA
ICC Operating Supply Current Output Not Switching 1.0 1.5 mA
Soft-Start Sectio n
tSS Soft-Sta rt Time(2) 5 10 15 ms
PWM Section
fOSC Operating Frequency VCS/FB = 0.2 V, TA = 25°C 59 65 73 kHz
∆fOSC Frequency Fluctuation(2) ±3 kHz
VCS/FB1 CS/FB Threshold Voltage TA = 25°C 0.9 1.0 1.1 V
tD Propagation Delay to Output(2) 100 150 ns
DMAX Maximum Duty Cycle 70 75 80 %
DMIN Minimum Duty Cycle 0 %
Burst Mode Section
VCS/FB2 Burst On Threshold Voltage TA = 25°C 0.84 0.95 1.06 V
VCS/FB3 Burst Off Threshold Voltage TA = 25°C 0.77 0.88 0.99 V
Powe r Li mit Section
KPlimit Offset Gain VLatch/Plimit = 2 V, TA = 25°C 0.12 0.16 0.20
Output Section
VOH Output Voltage High TA = 25°C, Isource = 100 mA 11.5 12.0 14.0 V
VOL Output Voltage Low TA = 25°C, Isink = 100 mA 1.0 2.5 V
tR Rising Time(2) TA = 25°C, CL = 1 nF 45 150 ns
tF Falling Time(2) TA = 25°C, CL= 1 nF 35 150 ns
Continued on the f ol l owing page…
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 6
FAN7602C — Green Current Mode PWM Controller
Electrical Characteristics (Continued)
VCC = 14V, TA = -25°C~125°C, unless otherwise specified.
Symbol Parameter Condition Min. Typ. Max. Unit
Protection Section
VLATCH Latch Voltage 3.6 4.0 4.4 V
tOLP Overload Protection Time(2) 20 22 24 ms
tOLP_ST Overload Protection Time at
Startup 30 37 44 ms
VOLP Overload Protection Level 0 0.1 V
VLUVPoff Line Under-Voltage Protection
On to Off TA = 25°C 1.9 2.0 2.1 V
VLUVPon Line Under-Voltage Protection
Off to On TA = 25°C 1.4 1.5 1.6 V
VOVP Over-Voltage Protection TA = 25°C 18 19 20 V
TSD Shutdown Temperature(2) 170 °C
HYS 60 °C
Note:
2. These parameters, although guaranteed, are not 100% tested in production.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 7
FAN7602C — Green Current Mode PWM Controller
Typical Performance Characteristics
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -25 025 50 75 100 125
Normalized
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Temperature [°C]
Figure 4. Start Threshold Voltage vs. Temperature
Normalized
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Temperature [°C]
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
-50 -2 5 025 50 75 100 125
Normalized
Temperature [°C]
Figure 6. UVLO Hysteresis vs. Temperature Figure 7. Startup Threshold Current vs. Temperature
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
-50 -25 025 50 75 100 125
Normalized
Temperature [°C]
Normalized
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Temperature [°C]
Figure 8. Operating Supply Current vs. Temperature Figure 9. VSTR Startup Current vs. Temperature
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 8
FAN7602C — Green Current Mode PWM Controller
Typical Performance Characteristics (Continued).
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
CS FB 2
CS FB 3
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Figure 10. Burst On/Off Voltage vs. Temperature Figure 11. Operating Frequency vs. Temperature
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Figure 12. Offset Gain vs. Temperature Figure 13. Maximum Duty Cycle vs. Temperature
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Figure 14. OVP Voltage vs. Temperature Figure 15. Latch Voltage vs. Temperature
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 9
FAN7602C — Green Current Mode PWM Controller
Typical Performance Characteristics (Continued)
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Figure 16. L UVP On-to-Off Volta g e vs. Temperature Figure 17. LUVP Off-to-On Voltage vs. Temperature
Normalized
Temperature [°C]
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -2 5 025 50 75 100 125
Figure 18. CS/FB Threshold Voltage vs. Temperature
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 10
FAN7602C — Green Current Mode PWM Controller
Application Information
1. Startup Circuit and Soft-Start Block
The FAN7602C contains a startup switch to reduce the
power loss of the external startup circuit of the
conventional PWM converters. The internal startup
circuit charges the VCC capacitor with 0.9 mA current
source if the AC line is connected. The startup switch is
turned off 15 ms after IC starts up, as shown in Figure
19. The soft-start function starts when the VCC voltage
reaches the start threshold voltage of 12 V and ends
when the internal soft-start voltage reaches 1 V. The
internal startup circuit starts charging the VCC capacitor
again if the VCC voltage is lowered to the minimum
operating voltage, 8 V. The UVLO block shuts down the
output drive circuit and some blocks to reduce the IC
operating current and the internal soft-start voltage
drops to zero. If the VCC voltage reaches the start
threshold voltage, the IC starts switching again and the
soft-start block works as well.
During the soft-start, pulse-width modulated (PWM)
comparator compares the CS/FB pin voltage with the
soft-start voltage. The soft-start voltage starts from 0.5 V
and the soft-start ends when it reac hes 1 V and the soft-
start time is 10 ms. The startup switch is turned off when
the soft-start voltage reaches 1.3 V.
t
Soft-Start
Time (10ms)
12V
8V
V
CC
Startup
Current
Soft-Start
Voltage
1V
1.5V
0.5V
5ms
Figure 19. Startup Current and VCC Voltage
2. Oscillator Block
The oscillator frequency is set internally and FAN7602C
has a random frequency fluctuation function.
Fluctuation of the switching frequency of a switched
power supply can reduce EMI by spreading the energy
over a wider frequency range than the bandwidth
measured by the EMI test equipment. The amount of
EMI reduction is directly related to the range of the
frequency variation. The range of frequency variation is
fixed internally; however, its selection is randomly
chosen by the combination of external feedback voltage
and internal free-running oscillator. This randomly
chosen switching frequency effectively spreads the EMI
noise nearby switching frequency and allows the use of
a cost-effective inductor instead of an AC input line filter
to satisfy the world-wide EMI requirements.
t
SW
∆t
I
DS
t
t
f
SW
f
SW
+
1/2∆f
SWMAX
f
SW
-
1/2∆f
SWMAX
no repetition
several
µseconds
several
miliseconds
t
SW
=1/f
SW
Figure 20. Frequency Fluctuation Waveform
3. Current Sense and Feedback Block
The FAN7602C performs the current sensing for the
current mode PWM and the output voltage feedback
with only one pin, pin 3. To achieve the two functions
with one pin, an internal Leading-Edge Blanking (LEB)
circuit to filter the current sense noise is not included
because the external RC filter is necessary to add the
output voltage feedback information and the current
sense information.
Figure 21 shows the current sense and feedback circuits.
RS is the current sense resistor to sense the switch
current. The current sense information is filtered by an
RC filter composed of RF and CF. According to the
output voltage feedback information, IFB charges or
stops charging CF to adjust the offset voltage. If IFB is
zero, CF is discharged through RF and RS to lower the
offset voltage.
Soft-Start CS/FB
3
PWM
Comparator
V
CC
C
F
R
F
R
S
R
FB
I
FB
I
sw
Plimit
Offset
Power
Limit
PWM+
Figure 21. Current Sense and Feedback Circuits
Figure 22 shows typic al voltage waveforms of the CS/FB
pin. The current sense waveform is added to the offset
voltage, as shown in the Figure 22. The CS/FB pin
voltage is compared with PW M that is 1 V - Plimit o ffset.
If the CS/FB voltage meets PWM+, the output drive is
shut off. If the feedback offset voltage is LOW, the
switch on-time is increased. If the feedback offset
voltage is HIGH, the switch on-time is decreased. In this
way, the duty cycle is controlled according to the output
load condition. Generally, the maximum output power
increases as input voltage increases because the
current slope during switch on-time increases.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 11
FAN7602C — Green Current Mode PWM Controller
To limit the output power of the converter constantly, the
power limit function is included in FAN7602C. Sensing
the converter input voltage through the Latch/Plimit pin,
the Plimit offset voltage is subtracted from 1 V. As
shown in Figure 22, the Plimit offset voltage is
subtracted from 1 V and the switch on-time decreases
as the Plimit offset voltage increases. If the converter
input voltage increases, the switch on-time decreases,
keeping the output power constant. The offset voltage is
proportional to the Latch/Plimit pin voltage and the gain
is 0.16. If the Latch/Plimit voltage is 1 V, the offset
voltage is 0.16 V.
PWM+
CS/FB
GND On Time
FB
Offset
1V Power Limit
Offset
(a) Low Power Limit Offset Case
PWM+
CS/FB
GND On Time
FB
Offset
1V Power Limit
Offset
(b) High Power Limit Offset Case
Figure 22. CS/FB Pin Voltage Waveforms
4. Burst-Mode Block
The FAN7602C contains the burst-mode block to reduce
the power loss at a light-load and no load. A hysteresis
comparator senses the offset voltage of the Burst+ for
the burst mode, as shown in Figure 23. The Burst+ is
the sum of the CS/FB voltage and Plimit offset voltage.
The FAN7602C enters the burst mode when the offset
voltage of the Burst+ is higher than 0.95 V and exits the
burst mode when the offset voltage is l ower than 0.88 V.
The offset voltage is sensed during the switch off time.
CS/FB
Delay
Circuit 3
+
−
0.95V/0.88V
Burst+
Offset
Figure 23. Burst-Mode Block
5. Protection Block
The FAN7602C contains several protection functions to
improve system reliability.
5.1 Overload Protection (OLP)
The FAN7602C contains the overload protection
function. If the output load is higher than the rated
output current, the output voltage drops and the
feedback error amplifier is saturated. The offset of the
CS/FB voltage representing the feedback information is
almost zero. As shown in Figure 24, the CS/FB voltage
is compared with 50 mV reference when the internal
clock signal is HIGH and, if the voltage is lower than
50 mV, the OLP timer starts counting. If the OLP
condition persists for 22 ms, the timer generates the
OLP signal. The protection is reset by the UVLO. The
OLP block is enabled after the soft-start finishes.
OLP
50mV
22ms
Timer
Soft-Start
Clock
CS/FB
3
Figure 24. Overload Protection Circuit
5.2 Line Under-Voltage Protection
If the input voltage of the converter is lower than the
minimum operating voltage, the converter input current
increases too much, causing components failure.
Therefore, if the input voltage is LOW, the converter
should be protected. The LUVP circuit senses the input
voltage using the LUVP pin and, if this voltage is lower
than 2 V, the LUVP signal is generated. The comparator
has 0.5 V hysteresis. If the LUVP signal is generated,
the output drive block is shut down, the output voltage
feedback loop is saturated, and the OLP works if the
LUVP condition persists more than 22 ms.
2V/1.5V
1
+
−
LUVP
VIN
Figure 25. Line UVP Circuit
5.3 Latch Protection
The latch protection is provided to protect the system
against abnormal conditions using the Latch/Plimit pin.
The Latch/Plimit pin can be used for the output over-
voltage protection and/or other protections. If the Latch/
Plimit pin voltage is made higher than 4 V by an external
circuit, the IC is shut down. The latch protection is reset
when the VCC voltage is lower than 5 V.
5.4 Over-Voltage Protection (OVP)
If the VCC voltage reaches 19 V, the IC shuts down and
the OVP protection is reset when the VCC voltage is
lower than 5 V.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 12
FAN7602C — Green Current Mode PWM Controller
6. Output Drive Block
The FAN7602C contains a single totem-pole output
stage to drive a power MOSFET. The drive output is
capable of up to 450 mA sourcing current and 600 mA
sinking current with typic al rise and fall time of 45 ns and
35 ns, respectively, with a 1 nF load.
Typical Application Circuit
Application Output Power Input Voltage Output Voltage
Adaptor 48 W Universal Input (85 ~ 265 VAC) 12V
Features
Low stand-by power (<0.15 W at 265 VAC)
Constant output power control
Key Design Notes
All the IC-related components should be placed close to IC, especially C107 and C110.
If R106 value is too low, there can be subharmonic osc i ll ation.
R109 should be designed carefully to make the VCC voltage higher than 8 V when the input voltage is 265 VAC at
no load.
R110 should be designed carefully to make the VCC voltage lower than OVP level when the input voltage is 85 VAC
at full load.
R103 should be designed to keep the MOSFET VDS voltage lower than maximum rating when the output is
shorted.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 13
FAN7602C — Green Current Mode PWM Controller
1. Schematic
FUSE
AC INPUT
C101
LF1
C102
RT101
BD101 C105 C202
D204 L201
R204
R103
R101
5
6
7
8
NC
Vstr
V
CC
Out
LUVP
CS/FB
Latch/
Plimit
GND
FAN7602C
1
2
3
4R205
C203R203
R202
R201
C201
D102
IC201
OP1
R111
R104
D103
R106
Q101
T1
C106
D101
R105
IC101
C110
R113
C107
C204R206
D202
C109
C103 C104
C222
1
23
4
C108
5
6
1
3
12
9
R207
ZD201
R108
OP2 1
23
4
R109
R112
R102
R107
1
2
3
R110
ZD101
R114
Figure 26. Schematic
2. Induct or Schemat ic Diagram
Np2
5
6
1
2
12
9
3
NVcc
Ns
Np1 Shied
5
Shied
5
3mm 3mm
Ns
Np1
Np2
N
Vcc
NsShield
NsShield
Figure 27. Inductor Schematic Diagram
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 14
FAN7602C — Green Current Mode PWM Controller
3. Windi ng Speci f i cation
No. Pin ( S → F) Wire Turns Winding Method
Np1 3 → 2 0.3φ x 2 31 Solenoid Winding
Insulation: Polyester Tape t = 0.03 mm, 2-Layer
Shield 5 Copper Tape 0.9 Not Shorted
Insulation: Polyester Tape t = 0.03 mm, 2-Layer
Ns 12 → 9 0.65φ x 3 10 Solenoid Winding
Insulation: Polyester Tape t = 0.03 mm, 2-Layer
Shield 5 Copper Tape 0.9 Not Shorted
Insulation: Polyester Tape t = 0.03 mm, 2-Layer
NVcc 6 → 5 0.2φ x 1 10 Solenoid Winding
Insulation: Polyester Tape t = 0.03 mm, 2-Layer
Np2 2 → 1 0.3φ x 2 31 Solenoid Winding
Outer Insulation: Polyester Tape t = 0.03 mm, 2-Layer
4. Electrical Characterist ics
Pin Specification Remarks
Inductance 1 - 3 607 µH 100 kHz, 1 V
Inductance 1 - 3 15 µH 9 - 12 Shorted
5. Core & Bobbin
Core: EER2828
Bobbin: EER2828
Ae(mm2): 82.1
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 15
FAN7602C — Green Current Mode PWM Controller
6. Demo Circui t Part List
Part Value Note Part Value Note
Fuse Capacitor
FUSE 1 A/250 V C101 220 nF / 275 V Box Capacitor
NTC C102 150 nF / 275 V Box Capacitor
RT101 5D-9 C103, C104 102 / 1 kV Ceramic
Resistor C105 150 µF / 400 V Electrolytic
R102, R112 10 MΩ 1/4 W C106 103 / 630 V Film
R103 56 kΩ 1/2 W C107 271 Ceramic
R104 150 Ω 1/4 W C108 103 Ceramic
R105 1 kΩ 1/4 W C109 22 µF / 25 V Electrolytic
R106 0.5 Ω 1/2 W C110 473 Ceramic
R107 56 kΩ 1/4 W C201, C202 1000 µF / 25 V Electrolytic
R108 10 kΩ 1/4 W C203 102 Ceramic
R109 0 Ω 1/4 W C204 102 Ceramic
R110 1 kΩ 1/4 W C222 222 / 1 kV Ceramic
R111 6 kΩ 1/4 W MOSFET
R113 180 kΩ 1/4 W Q101 FQPF8N60C Fairchild
Semiconductor
R114 50 kΩ 1/4 W Diode
R201 1.5 kΩ 1/4 W D101, D102 UF4007
Fairchild
Semiconductor
R202 1.2 kΩ 1/4 W D103 1N5819 Fairchild
Semiconductor
R203 20 kΩ 1/4 W D202, D204 FYPF2010DN Fairchild
Semiconductor
R204 27 kΩ 1/4 W ZD101, ZD201 1N4744
Fairchild
Semiconductor
R205 7 kΩ 1/4 W BD101 KBP06
Fairchild
Semiconductor
R206 10 Ω 1/2 W TNR
R207 10 kΩ 1/4 W R101 471 470 V
IC Filter
IC101 FAN7602C Fairchild
Semiconductor LF101 23 mH 0.8 A
IC201 KA431 Fairchild
Semiconductor L201 10 µH 4.2 A
OP1, OP2 H11A817B Fairchild
Semiconductor
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7602C • Rev. 1.0.1 16
FAN7602C — Green Current Mode PWM Controller
7. PCB Layout
Minimize Loop Area
Separate Power
and Signal Ground
Minimize Leakage
Inductance
FAN7602C
1 2
6 58 7
YWW
3 4
Latch/P
limit GNDCS/FBLUVP
V
STR
NC V
CC
OUT
Place these caps.
close to the IC
DC
Link
Pulsating High Current
Signal Level Low Current
Figure 28. PCB Layout Recommendations
8. Perform ance Data
85 VAC 110 VAC 220 VAC 265 VAC
Input Power at No Load 72 mW 76 mW 92 mW 107 mW
Input Power at 0.5 W Load 760 mW 760 mW 785 mW 805 mW
OLP Point 4.73 A 5.07 A 5.11 A 4.91 A
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