FAIRCHILD FSDM0465RS

FSDM0465RS
Green Mode Fairchild Power Switch (FPS™)
Features
Description
! Internal Avalanche Rugged SenseFET
The FSDM0465RS is an integrated Pulse-Width
Modulator (PWM) and SenseFET specifically designed
for high-performance offline Switch Mode Power
Supplies (SMPS) with minimal external components.
The device is an integrated, high-voltage, powerswitching regulator that combines an avalanche rugged
SenseFET with a current mode PWM control block. The
PWM controller includes integrated fixed-frequency
oscillator, under-voltage lockout, leading-edge blanking
(LEB), optimized gate driver, internal soft-start,
temperature-compensated precise-current sources for a
loop compensation and self-protection circuitry.
Compared with a discrete MOSFET and PWM controller
solution, it reduces total cost, component count, size and
weight; while increasing efficiency, productivity and system
reliability. This device is a basic platform well suited for
cost effective designs of flyback converters.
! Advanced Burst-Mode Operation Consumes
under 1W at 240VAC and 0.5W Load
! Precision Fixed Operating Frequency: 66kHz
! Internal Startup Circuit
! Improved Pulse-by-Pulse Current Limiting
! Over-Voltage Protection (OVP)
! Overload Protection (OLP)
! Internal Thermal Shutdown Function (TSD)
! Abnormal Over-Current Protection (AOCP)
! Auto-Restart Mode
! Under-Voltage Lock Out (UVLO) with Hysteresis
! Low Operating Current: 2.5mA
! Built-in Soft-Start
Applications
! SMPS for LCD Monitor and STB
! Adaptor
Ordering Information
Product Number
Package
FSDM0465RSWDTU(1)
TO-220F-6L(Forming)
Eco Status
RoHS
Marking
Code
BVDSS
RDS(ON)
Max.
DM0465RS
650V
2.6Ω
Note:
1. WDTU: Forming Type.
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
FPSTM is a trademark of Fairchild Semiconductor Corporation.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
April 2009
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Typical Circuit
AC
IN
DC
OUT
Vstr
Drain
PWM
Vfb
Vcc
Source
FSDM0465RS Rev: 00
Figure 1. Typical Flyback Application
Output Power Table
Maximum Output Power(2)
Product
230VAC ±15%(3)
Adapter(4)
FSDM0465RS
Open
48W
85–265VAC
Frame(5)
56W
Adapter(4)
Open Frame(5)
40W
48W
Notes:
2. The junction temperature can limit the maximum output power.
3. 230VAC or 100/115VAC with doubler.
4. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature.
5. Maximum practical continuous power in an open-frame design at 50°C ambient.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
2
VCC
Vstr
6
3
N.C. 5
Drain
1
Istart
0.5/0.7V
+
Vref
8V/12V
VCC
Idelay
VCC good
Internal
Bias
Vref
IFB
FB 4
Soft start
2.5R
OSC
PWM
S
Q
R
Q
R
Gate
driver
LEB
VSD
VCC
2 GND
Vovp
TSD
VCC good
S
Q
R
Q
VCL
FSDM0465RS Rev: 00
Figure 2. Functional Block Diagram
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
3
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Internal Block Diagram
TO-220F-6L
6. Vstr
5. N.C.
4. Vfb
3. VCC
2. GND
1. Drain
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin #
Name
1
Drain
SenseFET drain. High-voltage power SenseFET drain connection.
2
GND
Ground. This pin is the control ground and the SenseFET source.
3
VCC
Power Supply. This pin is the positive supply input, providing internal operating current
for both startup and steady-state operation.
4
Vfb
Feedback. This pin is internally connected to the inverting input of the PWM comparator.
The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 6V, the
overload protection triggers, which shuts down the FPS.
5
N.C.
No Connection.
Vstr
Startup. This pin is connected directly, or through a resistor, to the high-voltage DC link.
At startup, the internal high-voltage current source supplies internal bias and charges the
external capacitor connected to the VCC pin. Once VCC reaches 12V, the internal current
source is disabled. It is not recommended to connect Vstr and Drain together.
6
Description
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
4
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Pin Configuration
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 maximum ratings are stress ratings only. TA = 25°C, unless otherwise specified.
Symbol
BVDSS
Parameter
Value
Unit
Drain Source Breakdown Voltage
650
V
VSTR
VSTR Maximum Voltage
650
V
IDM
Drain Current Pulsed(6)
TC=25°C
9.6
ADC
TC=25°C
2.2
ARMS
ID
Continuous Drain Current(7)
1.4
ARMS
EAS
Single Pulsed Avalanche Energy(8)
TC=100°C
120
mJ
VCC
Supply Voltage
20
V
VFB
Input Voltage Range
-0.3 to 12
V
PD(Watt H/S) Total Power Dissipation (Tc=25°C)
45
W
TJ
Operating Junction Temperature
Internally limited
°C
TA
Operating Ambient Temperature
-25 to +85
°C
Storage Temperature
-55 to +150
°C
2.0
(GND-VSTR/VFB=1.5kV)
kV
1.0
kV
TSTG
ESD
ESD Capability, Human Body Model, JESD22-A114
(All pins excepts for VSTR and VFB)
ESD Capability, Charged Device Model,
JESD22-C101
Notes:
6. Repetitive rating: pulse width limited by maximum junction temperature.
7. This value is RMS current rating which should not be confused by the switching current.
8. L=14mH, starting TJ=25°C.
Thermal Impedance
TA=25°C, unless otherwise specified.
Symbol
θJA(9)
θJC(10)
Parameter
Junction-to-Ambient Thermal
Junction-to-Case Thermal
Value
Unit
50
°C/W
2.78
°C/W
Notes:
9. Free standing with no heat-sink under natural convection.
10. Infinite cooling condition - Refer to the SEMI G30-88.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
5
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Absolute Maximum Ratings
TA = 25°C unless otherwise specified.
Symbol
Parameter
Condition
Min. Typ. Max. Unit
SenseFET SECTION
VDS = 650V, VGS = 0V
250
µA
Zero Gate Voltage Drain Current
VDS = 520V, VGS = 0V,
TC = 125°C
250
µA
Static Drain Source on Resistance(11)
VGS = 10V, ID = 2.5A
2.2
2.6
Ω
COSS
Output Capacitance
VGS = 0V, VDS = 25V, f = 1MHz
60
td(on)
Turn-On Delay Time
IDSS
RDS(ON)
tr
td(off)
tf
pF
23
Rise Time
20
VDD = 325V, ID = 5A
Turn-Off Delay Time
ns
65
Fall Time
27
CONTROL SECTION
fOSC
ΔfSTABLE
ΔfOSC
IFB
Switching Frequency
Switching Frequency Stability
Switching Frequency
Feedback Source Current
DMAX
Maximum Duty Cycle
DMIN
Minimum Duty Cycle
VSTART
VSTOP
tS/S
Variation(12)
UVLO Threshold Voltage
Internal Soft-Start Time
VFB = 3V
60
66
72
kHz
13V ≤ VCC ≤ 18V
0
1
3
%
-25°C ≤ TA ≤ 85°C
VFB = GND
0
±5
±10
%
0.7
0.9
1.1
mA
77
82
87
%
0
%
VFB = GND
11
12
13
V
VFB = GND
7
8
9
V
VFB = 3V
10
15
ms
VCC = 14V
0.7
V
VCC = 14V
0.5
V
BURST MODE SECTION
VBURH
VBURL
Burst Mode Voltages
PROTECTION SECTION
VSD
IDELAY
tLEB
Shutdown Feedback Voltage
VFB ≥ 5.5V
5.5
Shutdown Delay Current
VFB = 5V
2.8
Leading Edge Blanking Time(12)
Limit(13)
ILIMIT
Peak Current
VOVP
Over-Voltage Protection
TSD
Thermal Shutdown
6.0
6.5
V
3.5
4.2
µA
250
VFB = 5V, VCC = 14V
Temperature(12)
ns
1.6
1.8
2.0
A
18
19
20
V
+130 +145 +160
°C
1.0
1.3
mA
2.5
5.0
mA
TOTAL DEVICE SECTION
ISTART
Operating Supply Current(14)
IOP
IOP(MIN)
VFB = GND, VCC = 11V
VFB = GND, VCC = 14V
Operating Supply Current
IOP(MAX)
(14)
VFB = GND, VCC = 10V
VFB = GND, VCC = 18V
Notes:
11. Pulse test: Pulse width ≤ 300µS, duty ≤ 2%.
12. These parameters, although guaranteed at the design, are not tested in mass production.
13. These parameters indicate the inductor current.
14. This parameter is the current flowing into the control IC.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
6
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Electrical Characteristics
Function
FS6M07652RTC
FSDM0465RS
FSDM0465RS Advantages
! Gradually increasing current limit during
Soft-Start
soft-start further reduces peak current and
Adjustable soft-start
Internal soft-start with
voltage component stresses
time using an external typically 10ms (fixed)
! Eliminates external components used for
capacitor
soft-start in most applications
! Reduces or eliminates output overshoot
! Built into controller ! Built into controller
! Improve light-load efficiency
Burst Mode Operation ! Output voltage
! Output voltage fixed ! Reduces no-load consumption
drops to around half
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
7
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Comparison Between FS6M07652RTC and FSDM0465RS
1.2
1.2
1.0
1.0
Start Thershold Voltage
(Vstart)
Operating Current
(Iop)
Graphs are normalized at TA= 25°C.
0.8
0.6
0.4
0.2
0.0
0.8
0.6
0.4
0.2
0.0
-25
0
25
50
75
100
125
150
-25
0
Junction Temperature [°C]
75
100
125
150
Figure 5. Start Threshold Voltage vs. Temperature
1.2
1.2
1.0
1.0
Operating Frequency
(Fosc)
Stop Threshold Voltage
(Vstop)
50
Junction Temperature [°C]
Figure 4. Operating Current vs. Temperature
0.8
0.6
0.4
0.2
0.0
0.8
0.6
0.4
0.2
0.0
-25
0
25
50
75
100
125
150
-25
0
Junction Temperature [°C]
25
50
75
100
125
150
Junction Temperature [°C]
Figure 6. Stop Threshold Voltage vs. Temperature
Figure 7. Operating Frequency vs. Temperature
1.2
1.2
1.0
1.0
FB Source Current
(Ifb)
Maximum Duty Cycle
(Dmax)
25
0.8
0.6
0.4
0.2
0.8
0.6
0.4
0.2
0.0
0.0
-25
0
25
50
75
100
125
150
-25
Junction Temperature [°C]
25
50
75
100
125
150
Junction Temperature [°C]
Figure 8. Maximum Duty vs. Temperature
Figure 9. Feedback Source Current vs. Temperature
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
0
www.fairchildsemi.com
8
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Typical Performance Characteristics
1.2
1.2
1.0
1.0
Shutdown Delay Current
(Idelay)
Shutdown FB Voltage
(Vsd)
Graphs are normalized at TA= 25°C.
0.8
0.6
0.4
0.2
0.0
0.8
0.6
0.4
0.2
0.0
-25
0
25
50
75
100
125
150
-25
0
25
Junction Temperature [°C]
Figure 10. Shutdown Feedback Voltage
vs. Temperature
100
125
150
1.2
FB Burst Mode Enable Voltage
(Vfbe)
Over Voltage Protection
(Vovp)
75
Figure 11. Shutdown Delay Current vs. Temperature
1.2
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
-25
0
25
50
75
100
125
-25
150
0
25
50
75
100
125
150
Junction Temperature [°C]
Junction Temperature [°C]
Figure 12. Over-Voltage Protection vs. Temperature
Figure 13. Burst Mode Enable Voltage
vs. Temperature
1.2
1.2
1.0
1.0
Peak Current Limit
(Self protection)
(Iover)
FB Burst Mode Disable Voltage
(Vfbd)
50
Junction Temperature [°C]
0.8
0.6
0.4
0.2
0.8
0.6
0.4
0.2
0.0
0.0
-25
0
25
50
75
100
125
150
-50
Junction Temperature [°C]
0
25
50
75
100
125
Junction Temperature [°C]
Figure 14. Burst Mode Disable Voltage
vs. Temperature
Figure 15. Current Limit vs. Temperature
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
-25
www.fairchildsemi.com
9
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Typical Performance Characteristics (Continued)
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Typical Performance Characteristics (Continued)
Graphs are normalized at TA= 25°C.
Soft Start Time
(Normalized to 25°C)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-50
-25
0
25
50
75
100
125
Junction Temperature [°C]
Figure 16. Soft-Start Time vs. Temperature
.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
10
1. Startup: In previous generations of Fairchild Power
Switches (FPS™) the VCC pin had an external startup
resistor to the DC input voltage line. In this generation
the startup resistor is replaced by an internal highvoltage current source. At startup, an internal highvoltage current source supplies the internal bias and
charges the external capacitor (Cvcc) that is connected to
the VCC pin shown in Figure 17. When VCC reaches 12V,
the FSDM0465RS begins switching and the internal
high-voltage current source is disabled. The
FSDM0465RS continues its normal switching operation
and the power is supplied from the auxiliary transformer
winding unless VCC goes below the stop voltage of 8V.
6
D2
+
Vfb*
KA431
2.5R
Gate
driver
R
-
VSD
OLP
Rsense
FSDM0465RS Rev: 00
Figure 18. Pulse Width Modulation (PWM) Circuit
2.1 Pulse-by-Pulse Current Limit: Because current
mode control is employed, the peak current through the
SenseFET is limited by the inverting input of PWM
comparator (VFB*) as shown in Figure 18. Assuming that
the 0.9mA current source flows only through the internal
resistor (2.5R + R = 2.8kΩ), the cathode voltage of diode
D2 is about 2.5V. Since D1 is blocked when the feedback
voltage (VFB) exceeds 2.5V, the maximum voltage of the
cathode of D2 is clamped at this voltage, thus clamping
VFB*. Therefore, the peak value of the current through
the SenseFET is limited.
Vstr
Vref
VCC good
2.2 Leading-Edge Blanking (LEB): At the instant the
internal SenseFET is turned on, there usually exists a
high-current spike through the SenseFET, caused by
primary-side capacitance and secondary-side rectifier
reverse recovery. Excessive voltage across the RSENSE
resistor would lead to incorrect feedback operation in the
current mode PWM control. To counter this effect, the
FSDM0465RS employs a leading edge blanking (LEB)
circuit. This circuit inhibits the PWM comparator for a
short time (tLEB) after the SenseFET is turned on.
Internal
Bias
FSDM0465RS Rev: 00
Figure 17. Internal Startup Circuit
2. Feedback Control: FSDM0465RS employs current
mode control, as shown in Figure 18. An opto-coupler
(such as the H11A817A) and shunt regulator (such as
the KA431) are typically used to implement the feedback
network. Comparing the feedback voltage with the
voltage across the RSENSE resistor plus an offset voltage
makes it possible to control the switching duty cycle.
When the reference pin voltage of the KA431 exceeds
the internal reference voltage of 2.5V, the H11A817A
LED current increases, thus pulling down the feedback
voltage and reducing the duty cycle. This event typically
happens when the input voltage is increased or the
output load is decreased.
3. Protection Circuit: The FSDM0465RS has several
self protective functions such as overload protection
(OLP), over-voltage protection (OVP) and thermal
shutdown (TSD). Because these protection circuits are
fully integrated into the IC without external components,
the reliability is improved without increasing cost. Once
the fault condition occurs, switching is terminated and
the SenseFET remains off. This causes VCC to fall.
When VCC reaches the UVLO stop voltage, 8V, the
protection is reset and the internal high-voltage current
source charges the VCC capacitor via the Vstr pin. When
VCC reaches the UVLO start voltage, 12V, the
FSDM0465RS resumes its normal operation. In this
manner, the auto-restart can alternately enable and
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
SenseFET
OSC
D1
CB
Istart
8V/12V
IFB
4
H11A817A
CVcc
3
Vfb
VO
VDC
VCC
Vref
VCC
Idelay
www.fairchildsemi.com
11
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Functional Description
FSDM04565RS Rev: 00
VFB
Overload protection
Vds
Power
on
Fault
occurs
Fault
removed
6.0V
2.5V
T12= Cfb*(6.0-2.5)/Idelay
Vcc
T1
12V
T2
t
Figure 20. Overload Protection
8V
3.2 Over-Voltage Protection (OVP): If the secondary
side feedback circuit were to malfunction or a solder
defect caused an open in the feedback path, the current
through the opto-coupler transistor becomes almost
zero. Then, VFB climbs up in a similar manner to the
overload situation, forcing the preset maximum current
to be supplied to the SMPS until the overload protection
is activated. Because more energy than required is
provided to the output, the output voltage may exceed
the rated voltage before the overload protection is
activated, resulting in the breakdown of the devices in
the secondary side. To prevent this situation, an overvoltage protection (OVP) circuit is employed. In general,
VCC is proportional to the output voltage and the
FSDM0465RS uses VCC instead of directly monitoring
the output voltage. If VCC exceeds 19V, an OVP circuit is
activated resulting in the termination of the switching
operation. To avoid undesired activation of OVP during
normal operation, VCC should be designed to be below
19V.
t
FSDM0465RS Rev: 00
Normal
operation
Fault
situation
Normal
operation
Figure 19. Auto Restart Operation
3.1 Overload Protection (OLP): Overload is defined as
the load current exceeding a pre-set level due to an
unexpected event. In this situation, the protection circuit
should be activated to protect the SMPS. However, even
when the SMPS is in the normal operation, the overload
protection circuit can be activated during the load
transition. To avoid this undesired operation, the
overload protection circuit is designed to be activated
after a specified time to determine whether it is a
transient situation or an overload situation. Because of
the pulse-by-pulse current limit capability, the maximum
peak current through the SenseFET is limited, and
therefore the maximum input power is restricted with a
given input voltage. If the output consumes beyond this
maximum power, the output voltage (VO) decreases
below the set voltage. This reduces the current through
the opto-coupler LED, which reduces the opto-coupler
transistor current, thus increasing the feedback voltage
(VFB). If VFB exceeds 2.5V, D1 is blocked and the 3.5µA
current source starts to charge CB slowly up to VCC. In
this condition, VFB continues increasing until it reaches
6V, when the switching operation is terminated as shown
in Figure 20. The delay time for shutdown is the time
required to charge CB from 2.5V to 6.0V with 3.5µA. In
general, a 10 ~ 50ms delay time is typical for most
applications.
3.3 Thermal Shutdown (TSD): The SenseFET and the
control IC are built in one package. This makes it easy
for the control IC to detect the heat generation from the
SenseFET.
When
the
temperature
exceeds
approximately 150°C, the thermal shutdown is activated.
4.2 Abnormal Over-Current Protection (AOCP): When
the secondary rectifier diodes or the transformer pins are
shorted, a steep current with extremely high di/dt can
flow through the SenseFET during the LEB time. Even
though the FPS has overload protection, it is not enough
to protect the FPS in those abnormal cases, since
severe current stress is imposed on the SenseFET until
OLP triggers. This IC has an internal AOCP circuit
shown in Figure 21. When the gate turn-on signal is
applied to the power SenseFET, the AOCP block is
enabled and monitors the current through the sensing
resistor. The voltage across the resistor is compared with
a preset AOCP level. If the sensing resistor voltage is
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
12
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
disable the switching of the power SenseFET until the
fault condition is eliminated (see Figure 19).
Vo
Voset
OSC
2.5R
S
Q
R
Q
VFB
Gate
driver
R
LEB
0.7V
0.5V
AOCP protection
2 GND
Ids
VCL
FSDM0465RS Rev: 00
Figure 21. Abnormal Over-Current Protection
Vds
4. Soft-Start: The FSDM0465RS has an internal softstart circuit that increases PWM comparator inverting
input voltage together with the SenseFET current slowly
after it starts up. The typical soft-start time is 10ms. The
pulse width to the power switching device is
progressively increased to establish the correct working
conditions for transformers, inductors, and capacitors.
The voltage on the output capacitors is progressively
increased with the intention of smoothly establishing the
required output voltage. It helps prevent transformer
saturation and reduces the stress on the secondary
diode during startup.
time
FSDM0465RS Rev: 00
T1
Switching
disabled
T2 T3
Switching
disabled
T4
Figure 22. Waveforms of Burst Operation
5. Burst Operation: To minimize power dissipation in
standby mode, the FSDM0465RS enters burst mode
operation. As the load decreases, the feedback voltage
decreases. As shown in Figure 22, the device
automatically enters burst mode when the feedback
voltage drops below VBURL(500mV). At this point
switching stops and the output voltages start to drop at a
rate dependent on standby current load. This causes the
feedback voltage to rise. Once it passes VBURH(700mV)
switching resumes. The feedback voltage then falls and
the process repeats. Burst mode operation alternately
enables and disables switching of the power SenseFET
thereby reducing switching loss in standby mode.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
13
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
greater than the AOCP level, the set signal is applied to
the latch, resulting in the shutdown of the SMPS.
Application
Output Power
Input Voltage
Output Voltage (Maximum Current)
LCD Monitor
34W
Universal Input
(85-265VAC)
5V (2.0A)
12V (2.0A)
Features
! High Efficiency (>81% at 85VAC Input)
! Low Zero Load Power Consumption (<300mW at 240VAC Input)
! Low Standby Mode Power Consumption (<800mW at 240VAC Input and 0.3W Load)
! Low Component Count
! Enhanced System Reliability through Various Protection Functions
! Internal Soft-Start (10ms)
Key Design Notes
! Resistors R102 and R105 are employed to prevent startup at low input voltage. After startup, there is no power loss
in these resistors since the startup pin is internally disconnected after startup.
! The delay time for overload protection is designed to be about 50ms with C106 of 47nF. If a faster triggering of OLP
is required, C106 can be reduced to 10nF.
! Zener diode ZD102 is used for a safety test such as UL. When the drain pin and feedback pin are shorted, the zener
diode fails and remains short, which causes the fuse (F1) blown and prevents explosion of the opto-coupler (IC301).
This zener diode also increases the immunity against line surge.
1. Schematic
D202
T1
EER3016 MBRF10100
10
1
R102
30kΩ
C103
100μF
400V
R105
40kΩ
BD101
2
2KBP06M3N257
1
5
4
C102
220nF
275VAC
ZD102
10V
4
C106
47nF
50V
2
D101
UF 4007
8
12V, 2.5A
C202
1000μF
25V
C201
1000μF
25V
3
IC1
FSDM04565RS
6
3
C104
2.2nF
1kV
R103
56kΩ
2W
L201
Vstr
Drain
1
D201
MBRF1045
NC
Vcc 3
Vfb
GND
2
ZD101
22V
C105 D102
22μF UF4004
50V
R104
5Ω
4
7
6
5
L202
5V, 2A
C204
1000μF
10V
C203
1000μF
10V
C301
4.7nF
LF101
23mH
R201
1kΩ
R101
560kΩ
1W
RT1
5D-9
C101
220nF
275VAC
R202
1.2kΩ
IC301
H11A817A
F1
FUSE
250V
2A
IC201
KA431
R204
5.6kΩ
R203
12kΩ
C205
47nF
R205
5.6kΩ
FSDM0465RS Rev: 00
Figure 23. Demo Circuit
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
14
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Typical Application Circuit
EER3016
Np/2
Np/2
1
10
2
9
3
8
4
7
Na 5
N12V
N5V
6
FSDM0465RS Rev: 00
Figure 24. Transformer Schematic Diagram
3.Winding Specification
No
Pin (s→f)
4→5
Na
Wire
0.2φ
×1
Turns
Winding Method
8
Center Winding
18
Solenoid Winding
7
Center Winding
3
Center Winding
18
Solenoid Winding
Insulation: Polyester Tape t = 0.050mm, 2 Layers
2→1
Np/2
0.4φ × 1
Insulation: Polyester Tape t = 0.050mm, 2 Layers
10 → 8
N12V
0.3φ × 3
Insulation: Polyester Tape t = 0.050mm, 2 Layers
7→6
N5V
0.3φ × 3
Insulation: Polyester Tape t = 0.050mm, 2 Layers
3→2
Np/2
0.4φ × 1
Outer Insulation: Polyester Tape t = 0.050mm, 2 Layers
4.Electrical Characteristics
Pin
Specification
Remarks
Inductance
1-3
650µH ± 10%
100kHz, 1V
Leakage Inductance
1-3
10µH Maximum
2nd all short
5. Core & Bobbin
! Core: EER 3016
! Bobbin: EER3016
! Ae(mm2): 96
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
15
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
2. Transformer
Part
Value
Note
Part
Value
Fuse
F101
2A/250V
RT101
Note
Inductor
L201
5µH
Wire 1.2mm
NTC
L202
5µH
Wire 1.2mm
Resistor
D101
UF4007
5D-9
Diode
R101
560kΩ
1W
D102
UF4004
R102
30kΩ
1/4W
D201
MBRF1045
R103
56kΩ
2W
D202
MBRF10100
R104
5Ω
1/4W
ZD101
Zener Diode
22V
R105
40kΩ
1/4W
ZD102
Zener Diode
10V
R201
1kΩ
1/4W
R202
1.2kΩ
1/4W
R203
12kΩ
1/4W
R204
5.6kΩ
1/4W
R205
5.6kΩ
1/4W
Bridge Diode
BD101
2KBP06M 3N257
Bridge Diode
Line Filter
LF101
23mH
Wire 0.4mm
IC101
FSDM0465RS
FPS™
IC
Capacitor
C101
220nF/275VAC
Box Capacitor
IC201
KA431 (TL431)
Voltage Reference
C102
220nF/275VAC
Box Capacitor
IC301
H11A817A
Opto-coupler
C103
100µF/400V
Electrolytic Capacitor
C104
2.2nF/1kV
Ceramic Capacitor
C105
22uF/50V
Electrolytic Capacitor
C106
47nF/50V
Ceramic Capacitor
C201
1000µF/25V
Electrolytic Capacitor
C202
1000µF/25V
Electrolytic Capacitor
C203
1000µF/10V
Electrolytic Capacitor
C204
1000µF/10V
Electrolytic Capacitor
C205
47nF/50V
Ceramic Capacitor
C301
4.7nF
Polyester Film Capacitor
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
16
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
6. Demo Circuit Part List
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
7. Layout
Figure 25. FSDM0465RS Demo Board (Top View)
Figure 26. FSDM0465RS Demo Board (Bottom View)
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
17
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
Package Dimensions
Figure 27. TO-220F-6L (Forming)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
18
FSDM0465RS — Green Mode Fairchild Power Switch (FPS™)
© 2008 Fairchild Semiconductor Corporation
FSDM0465RS Rev. 1.0.1
www.fairchildsemi.com
19