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Fairchild Semiconductor Electronic Components Datasheet

FSEM311Z Datasheet

Green Mode Fairchild Power Switch

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January 2009
FSEM311, FSEM311Z
Green Mode Fairchild Power Switch (FPS™)
Features
ƒ Internal Avalanche Rugged Sense FET
ƒ Precision Fixed Operating Frequency
ƒ Internal Start-up Circuit
ƒ Pulse-by-Pulse Current Limiting
ƒ Over Voltage Protection (OVP)
ƒ Over Load Protection (OLP)
ƒ Internal Thermal Shutdown Function (TSD)
ƒ Auto-Restart Mode
ƒ Under Voltage Lockout (UVLO)
ƒ Low Operating Current (3mA)
ƒ Adjustable Peak Current Limit
ƒ Built-in Soft Start
Applications
ƒ SMPS for STB, DVD & DVCD Player
ƒ SMPS for Auxiliary Power
Description
The FSEM311 family of integrated Pulse Width
Modulator (PWM) and Sense FET are specifically
designed for high performance offline Switch Mode
Power Supplies (SMPS) with minimal external
components. All Ex series devices are integrated high
voltage power switching regulators which combine an
avalanche rugged Sense FET with a current mode PWM
control block. The integrated PWM controller features
include: Under Voltage Lock Out (UVLO) protection,
Leading Edge Blanking (LEB), an optimized gate turn-
on/turn-off driver, Thermal Shut Down (TSD) protection
and temperature compensated precision current
sources for loop compensation and fault protection
circuitry. When start up the FSEM311 offers good soft
start performance. When compared to a discrete
MOSFET and controller or RCC switching converter
solution, the FSEM311 family devices reduce total
component count, design size, weight while increasing
efficiency, productivity, and system reliability. Both
devices provide a basic platform that is well suited for
the design of cost-effective flyback converters.
Related Resources
ƒ AN-4137, AN-4141, AN-4147, AN-4150 (Flyback)
Ordering Information
Part
Number
FSEM311
FSEM311Z
Maximum Output Power Table(1)
Oper.
Temp.
Top
Mark
Eco
Stat
us
PKG
Packing
Method
230VAC ±
BVDSS Current RDS(ON) 15%(2)
Limit ,MAX
Open
Frame(3)
85 ~
265VAC
Open
Frame(3)
-25 ~ 85°C EM311 RoHS 8-DIP
-25 ~ 85°C EM311Z RoHS 8-DIP
Rail
Rail
650V
700V
0.58A
0.58A
19
19
13W
13W
8W
8W
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
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. Maximum practical continuous power in an open-frame design at 50°C ambient.
© 2008 Fairchild Semiconductor Corporation
FSEM311 • Rev. 1.0.0
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FSEM311Z Datasheet

Green Mode Fairchild Power Switch

No Preview Available !

Application Diagram
Internal Block Diagram
Figure 1. Typical Application
Figure 2. Internal Block Diagram
© 2008 Fairchild Semiconductor Corporation
FSEM311 • Rev. 1.0.0
2
www.fairchildsemi.com


Part Number FSEM311Z
Description Green Mode Fairchild Power Switch
Maker Fairchild Semiconductor
Total Page 13 Pages
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