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Fairchild Semiconductor Electronic Components Datasheet

FSL4110LR Datasheet

1000V SenseFET Integrated Power Switch

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December 2015
FSL4110LR
1000 V SenseFET Integrated Power Switch
Features
Built-in Avalanche Rugged 1000 V SenseFET
Precise Fixed Operating Frequency: 50 kHz
VCC can be supplied from either bias-winding or self-
biasing.
Soft Burst-Mode Operation Minimizing Audible Noise
Random Frequency Fluctuation for Low EMI
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. Under-Voltage
Lockout (UVLO) and Line Over-Voltage Protection
(LOVP) with Hysteresis.
Built-in Internal Startup and Soft-Start Circuit
Fixed 1.6 s Restart Time for Safe Auto-Restart Mode
of All Protections
Description
The FSL4110LR is an integrated pulse width
modulation (PWM) controller and 1000 V avalanche
rugged SenseFET specifically designed for high input
voltage offline Switching Mode Power Supplies (SMPS)
with minimal external components. VCC can be supplied
through integrated high-voltage power regulator without
auxiliary bias winding.
The integrated PWM controller includes a fixed-
frequency oscillator, Under-Voltage Lockout (UVLO),
Leading-Edge Blanking (LEB), optimized gate driver,
soft-start, temperature-compensated precise current
sources for loop-compensation, and variable protection
circuitry.
Compared with a discrete MOSFET and PWM controller
solution, the FSL4110LR reduces total cost, component
count, PCB size, and weight; while simultaneously
increasing efficiency, productivity, and system reliability.
This device provides a basic platform for cost-effective
design of a flyback converter.
Applications
SMPS for Electric Metering
Auxiliary Power Supply for 3-Phase Input Industrial
Systems
Ordering Information
Part Number Package
Operating
Junction
Temperature
Current
Limit
RDS(ON) (Max.)
Output Power Table(1)
45~460 VAC(2) 85~460 VAC(2)
FSL4110LRN
FSL4110LRLX
7-DIP
7-LSOP
-40°C ~ 125°C 0.52 A
10 Ω
4 W(3)
9 W(3)
Notes:
1. The junction temperature can limit the maximum output power.
2. Maximum practical continuous power in an open-frame design at 50 C ambient temperatures.
3. Bias winding condition.
© 2014 Fairchild Semiconductor Corporation
FSL4110LR Rev. 1.3
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FSL4110LR Datasheet

1000V SenseFET Integrated Power Switch

No Preview Available !

Typical Application Circuit
RSTR
(4)
VOUT
R1
VIN
R2
VSTR
FSL4110LR
PWM
Drain
GND
FB
RDLY
VCC
(5)
CFB
CVCC
Figure 1. Typical Application Circuit
Notes:
4. RSTR: See the functional description 1.
5. RDLY: See the functional description 3.1.
Internal Block Diagram
VCC
2
VCC
RDLY
FB
3
CFB
Internal
Bias
VBURH
/VBURL
VREF
IFB
VCC Good
Soft
Burst
VSTART
/ VSTOP
Random
OSC
VREF
SQ
3R
Line
Comp.
R
Soft-
Start
PWM
RQ
LEB
HVREG
VIN 4
VINH
VOLP
VCC
VOVP
100 ms
Delay
1.6 s Auto Restart
Timing Control
TSD
VSTR
5
Drain
6,7
Gate
Driver
RSENSE
1 GND
VAOCP
Figure 2. Internal Block Diagram
© 2014 Fairchild Semiconductor Corporation
FSL4110LR • Rev. 1.3
2
www.fairchildsemi.com


Part Number FSL4110LR
Description 1000V SenseFET Integrated Power Switch
Maker Fairchild Semiconductor
Total Page 15 Pages
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