UCC28180_15 Datasheet, PDF (1/45 Pages) Texas Instruments – UCC28180 Programmable Frequency, Continuous Conduction Mode (CCM), Boost Power Factor Correction (PFC) Controller

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UCC28180
SLUSBQ5B – NOVEMBER 2013 – REVISED DECEMBER 2014
UCC28180 Programmable Frequency, Continuous Conduction Mode (CCM), Boost Power
Factor Correction (PFC) Controller
1 Features
•1 8-Pin Solution (No AC Line Sensing Needed)
• Wide Range Programmable Switching Frequency
(18 kHz to 250 kHz for MOSFET and IGBT-based
PFC Converters)
• Trimmed Current Loop Circuits for Low iTHD
• Reduced Current Sense Threshold (Minimizes
Power Dissipation in Shunt)
• Average Current-Mode Control
• Soft Over Current and Cycle-by-Cycle Peak
Current Limit Protection
• Output Overvoltage Protection With Hysteresis
Recovery
• Audible Noise Minimization Circuitry
• Open Loop Detection
• Enhance Dynamic Response During Output
Overvoltage and Undervoltage Conditions
• Maximum Duty Cycle of 96% (Typical)
• Burst Mode for No Load Regulation
• VCC UVLO, Low ICC Start-Up (< 75 µA)
2 Applications
• Universal AC Input, CCM Boost PFC Converters
in 100-W to Few-kW Range
• Server and Desktop Power Supplies
• White Good Appliances (Air Conditioners,
Refrigerators)
• Industrial Power Supplies (DIN Rail)
• Flat Panel (PDP, LCD, and LED) TVs
3 Description
The UCC28180 is a flexible and easy-to-use, 8-pin,
active Power-Factor Correction (PFC) controller that
operates under Continuous Conduction Mode (CCM)
to achieve high Power Factor, low current distortion
and excellent voltage regulation of boost pre-
regulators in AC - DC front-ends. The controller is
suitable for universal AC input systems operating in
100-W to few-kW range with the switching frequency
programmable between 18 kHz to 250 kHz, to
conveniently support both power MOSFET and IGBT
switches. An integrated 1.5-A and 2-A (SRC-SNK)
peak gate drive output, clamped internally at 15.2 V
(typical), enables fast turn-on, turn-off, and easy
management of the external power switch without the
need for buffer circuits.
Low-distortion wave shaping of the input current
using average current mode control is achieved
without input line sensing, reducing the external
component count. In addition, the controller features
reduced current sense thresholds to facilitate the use
of small-value shunt resistors for reduced power
dissipation, especially important in high-power
systems. To enable low current distortion, the
controller also features trimmed internal current loop
regulation circuits for eliminating associated
inaccuracies.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
UCC28180
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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Typical Application Schematic
EMI Filter
VOUT
LINE
INPUT
– + Bridge
Rectifier
1 GND
GATE 8
2 ICOMP
VCC 7
3 ISENSE VSENSE 6
4 FREQ VCOMP 5
UCC28180
Auxilary
Supply
Rload
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.