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FSGM0465R
Green-Mode Fairchild Power Switch (FPS™)
March 2010
Features
ƒ Soft Burst-Mode Operation for Low Standby Power
Consumption and Low Noise
ƒ Precision Fixed Operating Frequency: 66kHz
ƒ Pulse-by-Pulse Current Limit
ƒ 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
ƒ Auto-Restart Mode
ƒ Internal Startup Circuit
ƒ Internal High-Voltage SenseFET: 650V
ƒ Built-in Soft-Start: 15ms
Applications
ƒ Power Supply for LCD TV and Monitor, STB and DVD
Combination
Description
The FSGM0465R 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), Leading-
Edge 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 FSGM 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.
Ordering Information
Part Number
FSGM0465RWDTU
Package
Operating
Junction
Temperature
Current
Limit
RDS(ON)
(Max.)
Output Power Table(2)
230VAC ± 15%(3)
85-265VAC
Adapter(4)
Open
Frame(5)
Adapter(4)
Open
Frame(5)
Replaces
Device
TO-220F
6-Lead(1)
W-Forming
-40°C ~
+125°C
1.80A 2.6Ω
60W
70W
33W
48W FSDM0465RE
FSGM0465RUDTU
TO-220F
6-Lead(1)
U-Forming
-40°C ~
+125°C
1.80A 2.6Ω
60W
70W
33W
48W FSDM0465RE
FSGM0465RLDTU
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TO-220F
6-Lead(1)
L-Forming
-40°C ~
+125°C
1.80A 2.6Ω
60W
70W
33W
48W FSDM0465RE
Notes:
1. Pb-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.
© 2009 Fairchild Semiconductor Corporation
FSGM0465R • Rev. 1.0.2
www.fairchildsemi.com

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Application Circuit
Figure 1. Typical Application Circuit
Internal Block Diagram
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© 2009 Fairchild Semiconductor Corporation
FSGM0465R • Rev. 1.0.2
Figure 2. Internal Block Diagram
2
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Pin Configuration
6. VSTR
5. N.C.
4. FB
3. VCC
2. GND
1. Drain
FSGM0465R
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6
Name
Drain
GND
VCC
FB
N.C.
VSTR
Description
SenseFET Drain. High-voltage power SenseFET drain connection.
Ground. This pin is the control ground and the SenseFET source.
Power Supply. This pin is the positive supply input, which provides the internal operating
current for both startup and steady-state operation.
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.
No connection.
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 (ICH) is disabled.
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© 2009 Fairchild Semiconductor Corporation
FSGM0465R • Rev. 1.0.2
3
www.fairchildsemi.com