UCC28060
UCC28060
www.ti.com .................................................................................................................................................... SLUS767E–MAY 2007–REVISED NOVEMBER 2008
Natural Interleaving™ DUAL-PHASE TRANSITION-MODE PFC CONTROLLER
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NATURAL INTERLEAVING FEATURES
SYSTEM FEATURES
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Cost Savings
234
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Easy Phase Management Facilitates
Compliance to Light-Load Efficient Standards
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Improved Efficiency and Design Flexibility
over Traditional, Single-Phase Continuous
Conduction Mode (CCM)
Input Filter and Output Capacitor Current
Cancellation:
•
FailSafe OVP with Dual Paths Prevents Output
Over-voltage Conditions Caused by
Voltage-Sensing Failures
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•
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Sensorless Current Shaping Simplifies Board
Layout and Improves Efficiency
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Reduced current ripple for higher system
reliability and smaller bulk capacitor
Inrush Safe Current Limiting:
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Reduced EMI filter size
–
Prevents MOSFET conduction during
inrush
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Enables Use of Low-Cost Diodes without
Extensive Snubber Circuitry
–
Eliminates reverse recovery events in
output rectifiers
•
•
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Improved Light-Load Efficiency
Improved Transient Response
Complete System-Level Protection
1-A Source/1.8-A Sink Gate Drivers
Operating Temperature Range: –40°C to
+125°C in an SOIC 16-pin package
85-265VAC
400 VDC
EMI
+
-
Filter
VCC
ZCDA
GDA
APPLICATIONS
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•
•
100-W to 800-W Power Supplies
LCD, Plasma, and DLP® TVs
Computer Power Supplies
Entry Level Servers
CS
VINAC
ZCDB
UCC28060
GDB
TSET
Electronic Lighting Ballasts
PWMCNTL
VSENSE
COMP
Power-Good to Downstream Converter
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POUT = 600 W
VOUT = 400 V
PHB
VREF
4
3
2
1
1-Phase TM
HVSEN
PGND
AGND
1-Phase CCM
Typical Application Circuit
2-Phase TM Interleave
70
120
170
Input Voltage (V)
220
270
Ripple Current Reduction
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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DLP is a registered trademark of Texas Instruments.
Natural Interleaving is a trademark of Texas Instuments.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2008, Texas Instruments Incorporated