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UCC28060 Datasheet Preview

UCC28060 Datasheet

PFC CONTROLLER

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UCC28060
UCC28060
www.ti.com .................................................................................................................................................... SLUS767E – MAY 2007 – REVISED NOVEMBER 2008
Natural Interleaving™ DUAL-PHASE TRANSITION-MODE PFC CONTROLLER
NATURAL INTERLEAVING FEATURES
1
234 Easy Phase Management Facilitates
Compliance to Light-Load Efficient Standards
FailSafe OVP with Dual Paths Prevents Output
Over-voltage Conditions Caused by
Voltage-Sensing Failures
Sensorless Current Shaping Simplifies Board
Layout and Improves Efficiency
Inrush Safe Current Limiting:
– Prevents MOSFET conduction during
inrush
– Eliminates reverse recovery events in
output rectifiers
85-265VAC
EMI
Filter
-+
400 VDC
VCC
CS
VINAC
ZCDA
GDA
ZCDB
UCC28060
TSET
GDB
PWMCNTL
VSENSE
COMP
PHB
Power-Good to Downstream Converter
VREF
HVSEN
AGND
PGND
Typical Application Circuit
SYSTEM FEATURES
Cost Savings
Improved Efficiency and Design Flexibility
over Traditional, Single-Phase Continuous
Conduction Mode (CCM)
Input Filter and Output Capacitor Current
Cancellation:
– Reduced current ripple for higher system
reliability and smaller bulk capacitor
– Reduced EMI filter size
Enables Use of Low-Cost Diodes without
Extensive Snubber Circuitry
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
APPLICATIONS
100-W to 800-W Power Supplies
LCD, Plasma, and DLP® TVs
Computer Power Supplies
Entry Level Servers
Electronic Lighting Ballasts
5
POUT = 600 W
VOUT = 400 V
4
1-Phase TM
3
1-Phase CCM
2
2-Phase TM Interleave
1
70 120 170
Input Voltage (V)
220
Ripple Current Reduction
270
1
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.
DLP is a registered trademark of Texas Instruments.
2
Natural Interleaving is a trademark of Texas Instuments.
3
All other trademarks are the property of their respective owners.
4
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




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UCC28060 Datasheet Preview

UCC28060 Datasheet

PFC CONTROLLER

No Preview Available !

UCC28060
SLUS767E – MAY 2007 – REVISED NOVEMBER 2008 .................................................................................................................................................... www.ti.com
CONTENTS
Ordering Information 2
Electrical Characteristics 4
Device Information 7
Functional Block Diagram 9
Typical Characteristics 10
Application Information 17
Design Example 23
Additional References 30
DESCRIPTION
Optimized for high-volume consumer applications, this solution extends the advantages of transition mode—high
efficiency with low-cost components—to higher power ratings than previously possible. By utilizing a Natural
Interleaving technique, both channels operate as masters (that is, there is no slave channel) synchronized to the
same frequency. This approach delivers inherently strong matching, faster responses, and ensures that each
channel operates in transition mode.
Complete system-level protections feature input brownout, output over-voltage, open-loop, overload, soft-start,
phase-fail detection, and thermal shutdown. The additional FailSafe over-voltage protection (OVP) feature
protects against shorts to an intermediate voltage that, if undetected, could lead to catastrophic device failure.
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PART NUMBER
UCC28060D
ORDERING INFORMATION(1)
PACKAGE (2)
SOIC 16-Pin (D)
OPERATING TEMPERATURE RANGE, TA
–40°C to +125°C
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) SOIC (D) package is available taped and reeled by adding R to the above part number. Reeled quantities for UCC28060DR are 2500
devices per reel.
2 Submit Documentation Feedback
Product Folder Link(s): UCC28060
Copyright © 2007–2008, Texas Instruments Incorporated


Part Number UCC28060
Description PFC CONTROLLER
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UCC28060 Datasheet PDF






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