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.

• 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.

• Topology
• Boost
• Control mode
• TM
• Practical operating frequency (Max) (MHz)
• 0.5
• UVLO thresholds on/off (V)
• 12.6/10.4
• Device type
• Controllers
• Operating supply current (mA)
• 5
• Features
• > 750W Applications, Enable, Interleaved, OVP, Peak Current Mode, Transition Control Mode, Interleaved
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 125

UCC28061的完整型号有：UCC28061D、UCC28061DR，以下是这些产品的关键参数及官网采购报价：

UCC28061D，工作温度：-40 to 125，封装：SOIC (D)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28061D的批量USD价格：1.486（1000+）

UCC28061DR，工作温度：-40 to 125，封装：SOIC (D)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28061DR的批量USD价格：1.238（1000+）

UCC28061EVM — UCC28061 300W PFC 前置稳压器评估模块

UCC28061 是一款双相、转换模式功率因数校正 (PFC) 前置稳压器。UCC28061EVM 是一款具有 390V、300W 直流输出的评估模块 (EVM)，它在 85 VRMS 到 265 VRMS 的通用输入电压范围内工作，并提供功率因数校正功能。该前置稳压器使用 UCC28061 PFC 交错控制器使输入电流波成形，以提供功率因数校正功能。此器件采用 TI 的 Natural Interleaving™ 技术来交错升压相位。本用户指南提供了单面印刷电路板应用的原理图、材料清单、装配图以及评估典型 PFC 应用中的 UCC28060 所需的测试设置信息。