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TOPSwitch-JX Family
Integrated Off-Line Switcher with EcoSmart Technology
TOP264-271
?
?
for Highly Ef?cient Power Supplies
Product Highlights
+
EcoSmart – Energy Efficient
?  Ideal for applications from 10 W to 245 W
?  Energy efficient over entire load range
?  No-load consumption below 100 mW at 265 VAC
?  Up to 750 mW standby output power for 1 W input at 230 VAC
AC
IN
D
V
DC
OUT
-
High Design Flexibility for Low System Cost
?  Multi-mode PWM control maximizes efficiency at all loads
TOPSwitch-JX
CONTROL
C
?  132 kHz operation reduces transformer and power supply size
S
X
F
?  66 kHz option for highest efficiency requirements
?  Accurate programmable current limit
?  Optimized line feed-forward for line ripple rejection
PI-5578-090309
?  Frequency jittering reduces EMI filter cost
?  Fully integrated soft-start for minimum start-up stress
?  725 V rated MOSFET
?  Simplifies meeting design derating requirements
Extensive Protection Features
Auto-restart limits power delivery to <3% during overload faults
? 
?  Output short-circuit protection (SCP)
?  Output over-current protection (OCP)
?  Output overload protection (OPP)
?  Output overvoltage protection (OVP)
?  User programmable for hysteretic/latching shutdown
Figure 1.
Typical Flyback Application.
?  Simple fast AC reset
eSIP-7C (E Package)
eSOP-12B (K Package)
eDIP-12B (V Package)
?  Primary or secondary sensed
?  Line undervoltage (UV) detection prevents turn-off glitches
?  Line overvoltage (OV) shutdown extends line surge withstand
Figure 2.
Package Options.
?  Accurate thermal shutdown with large hysteresis (OTP)
Advanced Package Options
?  eDIP ? -12 package:
?  43 W / 117 W universal input power output capability with
PCB / metal heat sink
?  Low profile horizontal orientation for ultra-slim designs
?  Heat transfer to both PCB and heat sink
?  Optional external heat sink provides thermal impedance
equivalent to a TO-220
?  eSIP ? -7C package:
?  177 W universal input output power capability
?  Vertical orientation for minimum PCB footprint
?  Simple heat sink mounting using clip provides thermal
impedance equivalent to a TO-220
?  eSOP ? -12 package:
?  66 W universal input output power capability
?  Low profile surface mounted for ultra-slim designs
?  Heat transfer to PCB via exposed pad and SOURCE pins
?  Supports wave or reflow soldering
?  Extended creepage to DRAIN pin
?  Heat sink is connected to SOURCE for low EMI
www.powerint.com
Description
TOPSwitch-JX cost effectively incorporates a 725 V power
MOSFET, high-voltage switched current source, multi-mode
PWM control, oscillator, thermal shutdown circuit, fault
protection and other control circuitry onto a monolithic device.
Typical Applications
?  Notebook or laptop adapter
?  Generic adapter
?  Printer
?  LCD monitor
?  Set-top box
?  PC or LCD TV standby
?  Audio amplifier
Output Power Ratings
See next page.
August 2012
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