FAIRCHILD FSD156MRBN

FSD156MRBN
Green-Mode Fairchild Power Switch (FPS™)
Features
Description

Advanced Soft Burst-Mode Operation for
Low Standby Power and Low Audible Noise



Random Frequency Fluctuation (RFF) for Low EMI





Low Operating Current (0.4mA) in Burst Mode
The FSD156MRBN is an integrated Pulse Width
Modulation (PWM) controller and SenseFET specifically
designed for offline Switch-Mode Power Supplies
(SMPS) with minimal external components. The PWM
controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout (UVLO), LeadingEdge Blanking (LEB), optimized gate driver, internal
soft-start, temperature-compensated precise current
sources for loop compensation, and self-protection
circuitry. Compared with a discrete MOSFET and PWM
controller solution, the FSD series can reduce total cost,
component
count,
size,
and
weight;
while
simultaneously increasing efficiency, productivity, and
system reliability. This device provides a basic platform
suited for cost-effective design of a flyback converter.
Pulse-by-Pulse Current Limit
Various Protection Functions: Overload Protection
(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD) with Hysteresis, Output-Short
Protection (OSP), and Under-Voltage Lockout
(UVLO) with Hysteresis
Internal Startup Circuit
Internal High-Voltage SenseFET: 650V
Built-in Soft-Start: 15ms
Auto-Restart Mode
Applications

Power Supply for LCD Monitor, STB, and DVD
Combination
Ordering Information
Output Power Table(2)
Part Number Package
FSD156MRBN
Operating
Current RDS(ON)
Junction
Limit (Max.)
Temperature
8-DIP
-40°C ~
+125°C
1.60A
2.3
230VAC ±15%(3)
Adapter(4)
26W
85-265VAC
Open
Open
Adapter(4)
Frame(5)
Frame(5)
40W
20W
30W
Replaces
Device
FSFM300N
FSGM300
Notes:
1. Lead-free package per JEDEC J-STD-020B.
2. The junction temperature can limit the maximum output power.
3. 230VAC or 100/115VAC with voltage 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 temperature.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
October 2011
Figure 1.
Typical Application Circuit
Internal Block Diagram
Figure 2.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Application Circuit
Internal Block Diagram
www.fairchildsemi.com
2
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Pin Configuration
1. GND
8. Drain
2. VCC
7. Drain
FSD156MRBN
3. FB
6. Drain
4. N.C.
5. Drain
Figure 3.
Pin Configuration (Top View)
Pin Definitions
Pin #
Name
1
GND
Ground. This pin is the control ground and the SenseFET source.
VCC
Power Supply. This pin is the positive supply input, which provides the internal operating
current for both startup and steady-state operation.
3
FB
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 7.0V, the
overload protection triggers, which shuts down the FPS™.
4
NC
No Connection
5, 6, 7, 8
Drain
2
Description
SenseFET Drain. High-voltage power SenseFET drain connection.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
3
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.
Symbol
Parameter
Min.
Max.
Unit
VDS
Drain Pin Voltage
650
V
VCC
VCC Pin Voltage
26
V
VFB
Feedback Pin Voltage
10.0
V
IDM
Drain Current Pulsed
4
A
IDS
Continuous Switching Drain Current(6)
TC=25C
1.9
A
TC=100C
1.27
A
190
mJ
1.5
W
150
C
-40
+125
C
-55
+150
C
EAS
PD
TJ
-0.3
(7)
Single Pulsed Avalanche Energy
Total Power Dissipation (TC=25C)
(8)
Maximum Junction Temperature
Operating Junction Temperature
TSTG
Storage Temperature
ESD
Electrostatic
Discharge Capability
(9)
Human Body Model, JESD22-A114
5
Charged Device Model, JESD22-C101
2
kV
Notes:
6. Repetitive peak switching current when the inductive load is assumed: Limited by maximum duty (DMAX=0.73)
and junction temperature (see Figure 4).
7. L=45mH, starting TJ=25C.
8. Infinite cooling condition (refer to the SEMI G30-88).
9. Although this parameter guarantees IC operation, it does not guarantee all electrical characteristics.
Figure 4.
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Absolute Maximum Ratings
Repetitive Peak Switching Current
Thermal Impedance
TA=25°C unless otherwise specified.
Symbol
Parameter
θJA
Junction-to-Ambient Thermal Impedance
ΨJL
Junction-to-Lead Thermal Impedance(11)
(10)
Value
Unit
85
°C/W
11
°C/W
Notes:
10. JEDEC recommended environment, JESD51-2, and test board, JESD51-10, with minimum land pattern.
11. Measured on the SOURCE pin #7, close to the plastic interface.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
4
TJ = 25C unless otherwise specified.
Symbol
Parameter
Conditions
Min.
650
Typ.
Max.
Unit
SenseFET Section
BVDSS
Drain-Source Breakdown Voltage
VCC = 0V, ID = 250A
IDSS
Zero-Gate-Voltage Drain Current
VDS = 650V, TA = 25C
Drain-Source On-State Resistance
VGS=10V, ID =1A
1.8
RDS(ON)
(12)
V
250
A
2.2
Ω
CISS
Input Capacitance
VDS = 25V, VGS = 0V, f=1MHz
515
pF
COSS
Output Capacitance(12)
VDS = 25V, VGS = 0V, f=1MHz
75
pF
Rise Time
VDS = 325V, ID = 4A, RG=25Ω
26
ns
tr
Fall Time
VDS = 325V, ID = 4A, RG=25Ω
25
ns
td(on)
tf
Turn-On Delay
VDS = 325V, ID = 4A, RG=25Ω
14
ns
td(off)
Turn-Off Delay
VDS = 325V, ID= 4A, RG=25Ω
32
ns
Control Section
Switching Frequency(12)
VCC = 14V, VFB = 4V
Switching Frequency Variation(12)
-25C < TJ < 125C
DMAX
Maximum Duty Ratio
VCC = 14V, VFB = 4V
DMIN
Minimum Duty Ratio
VCC = 14V, VFB = 0V
Feedback Source Current
VFB = 0
fS
fS
IFB
VSTART
VSTOP
tSS
VRECOMM
UVLO Threshold Voltage
Internal Soft-Start Time
61
61
65
67
73
kHz
±5
±10
%
67
73
%
0
%
115
A
90
VFB = 0V, VCC Sweep
11
12
13
V
After Turn-on, VFB = 0V
7.0
7.5
8.0
V
VSTR = 40V, VCC Sweep
Recommended VCC Range
15
13
ms
23
V
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Electrical Characteristics
Burst-Mode Section
VBURH
VBURL
Burst-Mode Voltage
VCC = 14V, VFB Sweep
0.45
0.50
0.55
V
0.30
0.35
0.40
V
Hys
150
mV
Protection Section
ILIM
Peak Drain Current Limit
di/dt = 300mA/s
1.45
1.60
1.75
A
VSD
Shutdown Feedback Voltage
VCC = 14V, VFB Sweep
6.45
7.00
7.55
V
VCC = 14V, VFB = 4V
1.2
2.0
2.8
A
VCC Sweep
23.0
24.5
26.0
V
0.7
1.0
1.3
s
1.8
2.0
2.2
V
2.0
2.5
3.0
s
125
135
145
C
IDELAY
Shutdown Delay Current
(12,14)
tLEB
Leading-Edge Blanking Time
VOVP
Over-Voltage Protection
tOSP
VOSP
tOSP_FB
TSD
THYS
Output-Short
Protection(12)
Threshold Time
Threshold VFB
VFB Blanking Time
Thermal Shutdown Temperature(12)
300
OSP Triggered when
tON<tOSP & VFB>VOSP
(Lasts Longer than tOSP_FB)
Shutdown Temperature
Hysteresis
60
ns
C
Continued on the following page…
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
5
TJ = 25C unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Total Device Section
IOP
Operating Supply Current,
(Control Part in Burst Mode)
VCC = 14V, VFB = 0V
0.3
0.4
0.5
mA
IOPS
Operating Switching Current,
(Control Part and SenseFET Part)
VCC = 14V, VFB = 2V
1.1
1.5
1.9
mA
Start Current
VCC=11V (Before VCC
Reaches VSTART)
85
120
155
A
Startup Charging Current
VCC = VFB = 0V, VSTR = 40V
0.7
1.0
1.3
mA
Minimum VSTR Supply Voltage
VCC = VFB = 0V, VSTR Sweep
ISTART
ICH
VSTR
26
V
Notes:
12. Although these parameters are guaranteed, they are not 100% tested in production.
13. Average value.
14. tLEB includes gate turn-on time.
Comparison of FSGM300N and FSD156MRBN
Function
FSGM300N
FSD156MRBN
Operating Current
1.5mA
0.4mA
Power Balance
Long tCLD
Very Short tCLD
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
Advantages of FSD156MRBN
Very low standby power
The difference of input power between the
low and high input voltage is quite small.
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Electrical Characteristics (Continued)
www.fairchildsemi.com
6
1.20
1.20
1.15
1.15
1.10
1.10
1.05
1.05
Normalized
Normalized
Characteristic graphs are normalized at TA=25°C.
1.00
0.95
0.90
0.85
0'C
Operating Supply Current (IOP) vs. TA
Figure 6.
1.20
1.20
1.15
1.15
1.10
1.10
1.05
1.05
1.00
0.95
0.90
0.85
0'C
Operating Switching Current (IOPS) vs. TA
1.00
0.95
0.90
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
0'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Startup Charging Current (ICH) vs. TA
Figure 8.
1.20
1.30
1.15
1.20
1.10
1.10
1.05
Normalized
1.40
1.00
0.90
0.80
0.70
Peak Drain Current Limit (ILIM) vs. TA
1.00
0.95
0.90
0.85
0.60
‐40'C ‐20'C
0'C
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Figure 9.
25'C 50'C 75'C 90'C 110'C 120'C 125'C
0.85
0.80
‐40'C ‐20'C
Figure 7.
0'C
Temperature [ °C]
Normalized
Normalized
0.90
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Normalized
0.95
0.85
0.80
‐40'C ‐20'C
Figure 5.
1.00
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Typical Performance Characteristics
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Feedback Source Current (IFB) vs. TA
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
0'C
Figure 10. Shutdown Delay Current (IDELAY) vs. TA
www.fairchildsemi.com
7
1.20
1.20
1.15
1.15
1.10
1.10
1.05
1.05
Normalized
Normalized
Characteristic graphs are normalized at TA=25°C.
1.00
0.95
0.90
0.85
0.80
‐40'C ‐20'C
0.95
0.90
0.85
0'C
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
1.15
1.10
1.10
1.05
1.05
Normalized
1.20
1.15
1.00
0.95
0.90
0.85
1.00
0.95
0.90
0.85
0'C
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
0'C
Temperature [ °C]
Figure 14. Over-Voltage Protection (VOVP) vs. TA
1.20
1.20
1.15
1.15
1.10
1.10
1.05
1.05
Normalized
Normalized
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Figure 13. Shutdown Feedback Voltage (VSD) vs. TA
1.00
0.95
0.90
0.85
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Figure 12. UVLO Threshold Voltage (VSTOP) vs. TA
1.20
0.80
‐40'C ‐20'C
0'C
Temperature [ °C]
Figure 11. UVLO Threshold Voltage (VSTART) vs. TA
Normalized
1.00
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Typical Performance Characteristics
1.00
0.95
0.90
0.85
0'C
0.80
‐40'C ‐20'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Figure 15. Switching Frequency (fS) vs. TA
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
0'C
Figure 16. Maximum Duty Ratio (DMAX) vs. TA
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8
3. Feedback Control: This device employs CurrentMode control, as shown in Figure 18. An opto-coupler
(such as the FOD817) 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 makes it possible to
control the switching duty cycle. When the reference pin
voltage of the shunt regulator exceeds the internal
reference voltage of 2.5V, the opto-coupler LED current
increases, pulling down the feedback voltage and
reducing drain current. This typically occurs when the
input voltage is increased or the output load is decreased.
1. Startup: At startup, an internal high-voltage current
source supplies the internal bias and charges the
external capacitor (CVcc) connected to the VCC pin, as
illustrated in Figure 17. When VCC reaches 12V, the
FSD156MRBN begins switching and the internal highvoltage current source is disabled. Normal switching
operation continues and the power is supplied from the
auxiliary transformer winding unless VCC goes below the
stop voltage of 7.5V.
3.1 Pulse-by-Pulse Current Limit: Because CurrentMode 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 90μA current source flows only through the
internal resistor (3R + R =25kΩ), the cathode voltage
of diode D2 is about 2.8V. Since D1 is blocked when
the feedback voltage (VFB) exceeds 2.8V, the
maximum voltage of the cathode of D2 is clamped at
this voltage. Therefore, the peak value of the current
through the SenseFET is limited.
3.2 Leading-Edge Blanking (LEB): At the instant the
internal SenseFET is turned on, a high-current spike
usually occurs through the SenseFET, caused by
primary-side capacitance and secondary-side rectifier
reverse recovery. Excessive voltage across the RSENSE
resistor leads to incorrect feedback operation in the
Current-Mode PWM control. To counter this effect, the
leading-edge blanking (LEB) circuit inhibits the PWM
comparator for tLEB (300ns) after the SenseFET is
turned on.
Figure 17. Startup Block
2. Soft-Start: The internal soft-start circuit increases
PWM comparator inverting input voltage, together with
the SenseFET current, slowly after startup. The typical
soft-start time is 15ms. The pulse width to the power
switching device is progressively increased to establish
the correct working conditions for the transformers,
inductors, and capacitors. The voltage on the output
capacitors is progressively increased to smoothly
establish the required output voltage. This helps prevent
transformer saturation and reduces stress on the
secondary diode during startup.
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Functional Description
Figure 18. Pulse Width Modulation Circuit
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
9
B
increasing until it reaches 7.0V, when the switching
operation is terminated, as shown in Figure 20. The
delay for shutdown is the time required to charge CFB
from 2.5V to 7.0V with 2.0µA. A 25 ~ 50ms delay is
typical for most applications. This protection is
implemented in Auto-Restart Mode.
B
Figure 20. Overload Protection
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 minimum turn-on time. Even though the
FSD156MRBN has overload protection, it is not
enough to protect the FSD156MRBN in that abnormal
case; due to the severe current stress imposed on the
SenseFET until OLP is triggered. The internal AOCP
circuit is 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 greater than the AOCP level, the
set signal is applied to the S-R latch, resulting in the
shutdown of the SMPS.
Figure 19. Auto-Restart Protection Waveforms
4.1 Overload Protection (OLP): Overload is defined
as the load current exceeding its normal level due to
an unexpected abnormal event. In this situation, the
protection circuit should trigger to protect the SMPS.
However, even when the SMPS is in normal
operation, the overload protection circuit can be
triggered during the load transition. To avoid this
undesired operation, the overload protection circuit is
designed to trigger only after a specified time to
determine whether it is a transient situation or a true
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 more than this
maximum power, the output voltage (VOUT) decreases
below the set voltage. This reduces the current
through the opto-coupler LED, which also reduces the
opto-coupler transistor current, increasing the
feedback voltage (VFB). If VFB exceeds 2.5V, D1 is
blocked and the 2.0µA current source starts to charge
CFB slowly up. In this condition, VFB continues
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
4. Protection Circuits: The FSD156MRBN has several
self-protective functions, such as Overload Protection
(OLP), Abnormal Over-Current Protection (AOCP),
Output-Short Protection (OSP), Over-Voltage Protection
(OVP), and Thermal Shutdown (TSD). All the
protections are implemented as auto-restart. Once the
fault condition is detected, switching is terminated and
the SenseFET remains off. This causes VCC to fall.
When VCC falls to the Under-Voltage Lockout (UVLO)
stop voltage of 7.5V, the protection is reset and the
startup circuit charges the VCC capacitor. When VCC
reaches the start voltage of 12.0V, the FSD156MRBN
resumes normal operation. If the fault condition is not
removed, the SenseFET remains off and VCC drops to
stop voltage again. In this manner, the auto-restart can
alternately enable and disable the switching of the
power SenseFET until the fault condition is eliminated.
Because these protection circuits are fully integrated
into the IC without external components, reliability is
improved without increasing cost.
Figure 21. Abnormal Over-Current Protection
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10
Figure 22. Output-Short Protection
4.4 Over-Voltage Protection (OVP): If the
secondary-side feedback circuit malfunctions or a
solder defect causes an opening 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 triggered. Because more
energy than required is provided to the output, the
output voltage may exceed the rated voltage before
the overload protection is triggered, resulting in the
breakdown of the devices in the secondary side. To
prevent this situation, an OVP circuit is employed. In
general, the VCC is proportional to the output voltage
and the FSD156MRBN uses VCC instead of directly
monitoring the output voltage. If VCC exceeds 24.5V,
an OVP circuit is triggered, resulting in the termination
of the switching operation. To avoid undesired
activation of OVP during normal operation, VCC should
be designed to be below 24.5V.
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
5. Soft Burst-Mode Operation: To minimize power
dissipation in Standby Mode, the FSD156MRBN enters
Burst-Mode operation. As the load decreases, the
feedback voltage decreases. As shown in Figure 23, the
device automatically enters Burst Mode when the
feedback voltage drops below VBURL (350mV). 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 (500mV), switching resumes. The feedback
voltage then falls and the process repeats. Burst Mode
alternately enables and disables SenseFET switching,
reducing switching loss in Standby Mode.
4.3. Output-Short Protection (OSP): If the output is
shorted, steep current with extremely high di/dt can
flow through the SenseFET during the minimum turnon time. Such a steep current brings high-voltage
stress on the drain of the SenseFET when turned off.
To protect the device from this abnormal condition,
OSP is included. It is comprised of detecting VFB and
SenseFET turn-on time. When the VFB is higher than
2.0V and the SenseFET turn-on time is lower than
1.0μs, this condition is recognized as an abnormal
error and PWM switching shuts down until VCC
reaches VSTART again. An abnormal condition output
short is shown in Figure 22.
Figure 23. Figure 23. Burst-Mode Operation
6. Random Frequency Fluctuation (RFF): Fluctuating
switching frequency of an SMPS can reduce EMI by
spreading the energy over a wide frequency range. The
amount of EMI reduction is directly related to the
switching frequency variation, which is limited internally.
The switching frequency is determined randomly by
external feedback voltage and internal free-running
oscillator at every switching instant. RFF effectively
scatters EMI noise around typical switching frequency
(67kHz) and can reduce the cost of the input filter
included to meet the EMI requirements (e.g. EN55022).
4.5 Thermal Shutdown (TSD): The SenseFET and
the control IC on a die in one package makes it easier
for the control IC to detect the over temperature of the
SenseFET. If the temperature exceeds ~135C, the
thermal shutdown is triggered and stops operation.
The FSD156MRBN operates in Auto-Restart Mode
until the temperature decreases to around 75C,
when normal operation resumes.
Figure 24. Random Frequency Fluctuation
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
11
Application
Input Voltage
Rated Output
Rated Power
LCD Monitor
Power Supply
85 ~ 265VAC
5.0V(2A)
14.0V(1.3A)
28.2W
Key Design Notes
1.
The delay for overload protection is designed to be about 30ms with C105 (8.2nF). OLP time between 39ms
(12nF) and 46ms (15nF) is recommended.
2.
The SMD-type capacitor (C106) must be placed as close as possible to the VCC pin to avoid malfunction by
abrupt pulsating noises and to improve ESD and surge immunity. Capacitance between 100nF and 220nF is
recommended.
Schematic
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Typical Application Circuit
Figure 25. Schematic
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
12
Figure 26. Schematic of Transformer
Winding Specification
Pin(S → F)
Wire
Turns
Winding Method
3→2
0.25φ×1
22
Np /2
Barrier Tape
TOP
BOT
Ts
Solenoid Winding
-
2.0mm
1
3
Solenoid Winding
-
3.0mm
1
8
Solenoid Winding
4.0mm
3.0mm
1
3
Solenoid Winding
-
3.0mm
1
5
Solenoid Winding
2.0mm
1
22
Solenoid Winding
2.0mm
1
Insulation: Polyester Tape t = 0.025mm, 2 Layers
N5V
7→6
0.4φ×2 (TIW)
Insulation: Polyester Tape t = 0.025mm, 2 Layers
Na
4→5
0.2φ×1
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Transformer
Insulation: Polyester Tape t = 0.025mm, 2 Layers
N5V
8→6
0.4φ×2 (TIW)
Insulation: Polyester Tape t = 0.025mm, 2 Layers
N14V
10 → 8
0.4φ×2 (TIW)
Insulation: Polyester Tape t = 0.025mm, 2 Layers
Np/2
2→1
0.25φ×1
-
Insulation: Polyester Tape t = 0.025mm, 2 Layers
Electrical Characteristics
Pin
Specification
Remark
Inductance
1－3
826H ±6%
67kHz, 1V
Leakage
1－3
15H Maximum
Short all other pins
Core & Bobbin


Core: EER3016 (Ae=109.7mm2)
Bobbin: EER3016
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
13
Part #
Value
Note
Part #
Fuse
F101
NTC101
Value
Note
Capacitor
250V 2A
C101
220nF/275V
Box (Pilkor)
NTC
C102
150nF/275V
Box (Pilkor)
C103
100F/400V
Electrolytic (SamYoung)
C104
3.3nF/630V
Film (Sehwa)
5D-9
DSC
Resistor
R101
1.5MΩ, J
1W
C105
15nF/100V
Film (Sehwa)
R103
43kΩ, J
1W
C106
100nF
SMD (2012)
R201
1.5kΩ, F
1/4W, 1%
C107
47F/50V
Electrolytic (SamYoung)
R202
1.0kΩ, F
1/4W, 1%
C201
820F/25V
Electrolytic (SamYoung)
R203
18kΩ, F
1/4W, 1%
C202
820F/25V
Electrolytic (SamYoung)
R204
8kΩ, F
1/4W, 1%
C203
2200F/10V
Electrolytic (SamYoung)
R205
8kΩ, F
1/4W, 1%
C204
1000F/16V
Electrolytic (SamYoung)
C205
47nF/100V
Film (Sehwa)
C301
2.2nF/Y2
Y-cap (Samhwa)
IC
FPS
Inductor
FSD156MRBN
Fairchild
LF101
20mH
Line filter 0.5Ø
IC201
KA431LZ
IC301
FOD817B
Fairchild
L201
5H
5A Rating
Fairchild
L202
5H
5A Rating
Diode
Transformer
D101
1N4007
Vishay
D102
UF4007
Vishay
ZD101
1N4750
Vishay
D201
MBRF10H100
Fairchild
D202
MBRF1060
Fairchild
BD101
G2SBA60
Vishay
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
T101
826uH
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Bill of Materials
www.fairchildsemi.com
14
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Package Dimensions
9.83
9.00
6.67
6.096
8.255
7.61
3.683
3.20
5.08 MAX
7.62
0.33 MIN
3.60
3.00
(0.56)
2.54
0.56
0.355
0.356
0.20
9.957
7.87
1.65
1.27
7.62
NOTES: UNLESS OTHERWISE SPECIFIED
A) THIS PACKAGE CONFORMS TO
JEDEC MS-001 VARIATION BA
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS ARE EXCLUSIVE OF BURRS,
MOLD FLASH, AND TIE BAR EXTRUSIONS.
D) DIMENSIONS AND TOLERANCES PER
ASME Y14.5M-1994
E) DRAWING FILENAME AND REVSION: MKT-N08FREV2.
Figure 27. 8-Lead, MDIP, JEDEC MS-001, .300" Wide
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/.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
15
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
16