UCC28061

ACTIVE

Natural interleaving transition-mode PFC controller with audible noise immunity

A newer version of this product is available

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Same functionality with different pin-out to the compared device
UCC28065 ACTIVE Natural Interleaving™ transition-mode PFC controller with high-frequency switching The UCC28065 is a high-frequency PFC which can reduce the inductor volume by up to 50%

Product details

Vin (max) (V) 21 Operating temperature range (°C) -40 to 125 Control mode TM Topology Boost, PFC controller Rating Catalog Features > 750 W applications, > 750W Applications, Brownout protection, Enable, Interleaved, OVP, Overvoltage protection, Peak current mode, Transition Control Mode Duty cycle (max) (%) 99
Vin (max) (V) 21 Operating temperature range (°C) -40 to 125 Control mode TM Topology Boost, PFC controller Rating Catalog Features > 750 W applications, > 750W Applications, Brownout protection, Enable, Interleaved, OVP, Overvoltage protection, Peak current mode, Transition Control Mode Duty cycle (max) (%) 99
SOIC (D) 16 59.4 mm² 9.9 x 6
  • NATURAL INTERLEAVING FEATURES
    • 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
  • SYSTEM FEATURES
    • Improved Audible Noise Performance
    • Soft Start on Overvoltage
    • Integrated Brownout
    • 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
  • APPLICATIONS
    • 100-W to 800-W Power Supplies
    • Gaming
    • D to A Set Top Boxes
    • Adapters
    • LCD, Plasma and DLP TVs
    • Home Audio Systems

DLP is a trademark of Texas Instruments.
Natural Interleaving is a trademark of Texas Instuments.

  • NATURAL INTERLEAVING FEATURES
    • 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
  • SYSTEM FEATURES
    • Improved Audible Noise Performance
    • Soft Start on Overvoltage
    • Integrated Brownout
    • 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
  • APPLICATIONS
    • 100-W to 800-W Power Supplies
    • Gaming
    • D to A Set Top Boxes
    • Adapters
    • LCD, Plasma and DLP TVs
    • Home Audio Systems

DLP is a trademark of Texas Instruments.
Natural Interleaving is a trademark of Texas Instuments.

Optimized for consumer applications concerned with audible noise elimination, 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.

Optimized for consumer applications concerned with audible noise elimination, 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.

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Evaluation board

UCC28061EVM — UCC28061 300W PFC Pre-Regulator Evaluation Module

The UCC28061 is a dual-phase, transition-mode Power Factor Correction (PFC) pre-regulator. The UCC28061EVM is an evaluation module (EVM) with a 390-V, 300-W, dc output that operates from a universal input of 85 VRMS to 265 VRMS and provides power-factor correction.The pre-regulator uses the (...)

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