Fairchild FSGM0465R Data Handbook
Summary
This integrated Green-Mode Power Switch combines a PWM controller and SenseFET into one component for reliable, cost-effective offline Switch-Mode Power Supplies (SMPS). Designed specifically as a solution for flyback converters and high-efficiency power adapters, it provides robust features including soft burst operation and multiple protection mechanisms. The manual details the full technical specifications, internal workings, application circuitry, and guidelines necessary for integrating this advanced component into your next power supply design.
Page 1 Text Content
0465R reen -M e F airch ild er S itch (F
April 2012
FSGM0465R Green-Mode Fairchild Power Switch (FPS™)
Features Description
Soft Burst-Mode Operation for Low Standby Power The FSGM0465R is an integrated Pulse Width Modulation (PWM) controller and Sense FET specifically
Consumption and Low Noise
designed for offline Switch-Mode Power Supplies
Precision Fixed Operating Frequency: 66k Hz
(SMPS) with minimal external components. The PWM Pulse-by-Pulse Current Limit controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading-
Various Protection Functions: Overload Protection Edge Blanking (LEB), optimized gate driver, internal (OLP), Over-Voltage Protection (OVP), Abnormal soft-start, temperature-compensated precise current Over-Current Protection (AOCP), Internal Thermal sources for loop compensation, and self-protection Shutdown (TSD) with Hysteresis, Output-Short circuitry. Compared with a discrete MOSFET and PWM Protection (OSP), and Under-Voltage Lockout (UVLO) controller solution, the FSGM series can reduce total with Hysteresis cost, component count, size, and weight; while
simultaneously increasing efficiency, productivity, and
Auto-Restart Mode
system reliability. This device provides a basic platform
Internal Startup Circuit suited for cost-effective design of a flyback converter. Internal High-Voltage Sense FET: 650V Built-in Soft-Start: 15ms Related Resources
Fairchild Power Supply Web Designer — Flyback
Applications
Design & Simulation - In Minutes at No Expense
Power Supply for LCD TV and Monitor, STB and DVD Combination
Ordering Information
Output Power Table(2)
Operating
Current RDS(ON) 230VAC ± 15%(3) 85-265VAC Replaces
Part Number Package Junction
Limit (Max.) Device
Open Open
Temperature
Adapter(4) Adapter(4)
Frame(5) Frame(5)
TO-220F 6-Lead(1) -40°C ~
FSGM0465RWDTU 1.80A 2.6Ω 60W 70W 33W 48W FSDM0465RE
W- +125°C Forming TO-220F
FSGM0465RUDTU 6-Lead(1) 1.80A 2.6Ω 60W 70W 33W 48W FSDM0465RE
U-Forming TO-220F
FSGM0465RLDTU 6-Lead(1) 1.80A 2.6Ω 60W 70W 33W 48W FSDM0465RE
L-Forming
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 www.fairchildsemi.com FSGM0465R • Rev. 1.0.3
Page Summary Contents For Fairchild FSGM0465R Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 19 |
| File Size | 997.27 KB |
| Published | July 12, 2026 |
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Frequently Asked Questions
What is the internal fixed operating frequency of this controller?
The unit has a precision fixed operating frequency of 66kHz.
What protection functions are included with the PWM controller?
It includes Overload Protection (OLP), Over-Voltage Protection (OVP), Auto-Current Protection (AOCP), and Internal Thermal Shutdown (TSD).
How is this device suitable for basic flyback converters?
The FSGM0465R provides a basic platform by including an internal startup circuit and a built-in Soft-Start feature.
What are the absolute maximum ratings for pin voltages?
Pin Voltage limits include 650V for V_Drain/V_DS, 26V for V_CC, and -0.3 to 12.0V for V_FB.