FSQ0365RN Datasheet, PDF (1/19 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency

November 2006
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311
Green Mode Fairchild Power Switch (FPS™) for
Quasi-Resonant Operation - Low EMI and High Efficiency
Features
„ Optimized for Quasi-Resonant Converter (QRC)
„ Low EMI through Variable Frequency Control and
Inherent Frequency Modulation
„ High-Efficiency through Minimum Voltage Switching
„ Narrow Frequency Variation Range over Wide Load
and Input Voltage Variation
„ Advanced Burst-Mode Operation for Low Standby
Power Consumption
„ Pulse-by-Pulse Current Limit
„ Various Protection Functions: Overload Protection
(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
„ Under-Voltage Lockout (UVLO) with Hysteresis
„ Internal Start-up Circuit
„ Internal High-Voltage Sense FET (650V)
„ Built-in Soft-Start (15ms)
Applications
„ Power Supply for DVP Player and DVD Recorder
„ Power supply for Set-Top Box
„ Adapter
„ Auxiliary Power Supply for PC, LCD TV, and PDP TV
Description
A Quasi-Resonant Converter (QRC) generally shows
lower EMI and higher power conversion efficiency than a
conventional hard-switched converter with a fixed
switching frequency. The FSQ-series is an integrated
Pulse-Width Modulation (PWM) controller and
SenseFET specifically designed for quasi-resonant
operation with minimal external components. The PWM
controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout, Leading Edge
Blanking (LEB), optimized gate driver, internal soft-start,
temperature-compensated precise current sources for
loop compensation, and self-protection circuitry.
Compared with discrete MOSFET and PWM controller
solution, the FSQ-series can reduce total cost,
component count, size and weight; while simultaneously
increasing efficiency, productivity, and system reliability.
This device provides a basic platform that is well suited
for cost-effective designs of quasi-resonant switching fly-
back converters.
Ordering Information
Product
Number⁽⁵⁾
PKG.
Operating
Temp.
Maximum Output Power⁽¹⁾
Current R_DS(ON)
230V_AC±15%⁽²⁾
Limit
Max.
Adapter⁽³⁾
Open
Frame⁽⁴⁾
85-265V_AC
Adapter⁽³⁾
Open
Frame⁽⁴⁾
Replaces
Devices
FSQ311 8-DIP -25 to +85°C 0.6A
19Ω
7W
10W
6W
8W
FSDL321
FSDM311
FSQ0165RN 8-DIP -25 to +85°C 0.9A
10Ω
10W
15W
9W
13W
FSDL0165RN
FSQ0265RN 8-DIP -25 to +85°C 1.2A
6Ω
14W
20W
11W
16W
FSDM0265RN
FSDM0265RNB
FSQ0365RN 8-DIP -25 to +85°C 1.5A
4.5Ω
17.5W
25W
13W
19W
FSDM0365RN
RSDM0365RNB
Notes:
1. The junction temperature can limit the maximum output power.
2. 230VAC or 100/115VAC with doubler. The maximum power with CCM operation.
3. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature.
4. Maximum practical continuous power in an open frame design at 50°C ambient.
5. PB-free package per JEDEC J-STD-020B.
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0
www.fairchildsemi.com