The UCC28070 is an advanced power factor correction device that integrates two pulse-width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, and the conducted-EMI filtering becomes easier and less expensive. A significantly improved multiplier design provides a shared current reference to two independent current amplifiers that ensures matched average current mode control in both PWM outputs while maintaining a stable, low-distortion sinusoidal input line current.

The UCC28070 contains multiple innovations including current synthesis and quantized voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements.

The UCC28070 also contains a variety of protection features including output over-voltage detection, programmable peak-current limit, under-voltage lockout, and open-loop protection.

• Qualified for Automotive Applications
• Interleaved Average Current-Mode PWM Control with Inherent Current Matching
• Advanced Current Synthesizer Current Sensing for Superior Efficiency
• Highly-Linear Multiplier Output with Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF
• Programmable Frequency (30 kHz to 300 kHz)
• Programmable Maximum Duty-Cycle Clamp
• Programmable Frequency Dithering Rate and Magnitude for Enhanced EMI Reduction
  • Magnitude: 3 kHz to 30 kHz
  • Rate: Up to 30 kHz
• External Clock Synchronization Capability
• Enhanced Load and Line Transient Response through Voltage Amplifier Output Slew-Rate Correction
• Programmable Peak Current Limiting
• Bias-Supply UVLO, Over-Voltage Protection, Open-Loop Detection, and PFC-Enable Monitoring
• External PFC-Disable Interface
• Open-Circuit Protection on VSENSE and VINAC pins
• Programmable Soft Start
• 20-Lead TSSOP Package

• Topology
• Boost
• Control mode
• CCM
• Practical operating frequency (Max) (MHz)
• 0.3
• UVLO thresholds on/off (V)
• 10.2/9.2
• Device type
• Controllers
• Operating supply current (mA)
• 20
• Features
• Automotive qualified, Feed-forward Correction, Frequency Dithering, Programable Switching Frequency, Interleaved, Programmable Soft-start, Synchronizable
• Rating
• Automotive
• Operating temperature range (C)
• -40 to 125

UCC28070-Q1的完整型号有：UCC28070QPWRQ1，以下是这些产品的关键参数及官网采购报价：

UCC28070QPWRQ1，工作温度：-40 to 125，封装：TSSOP (PW)-20，包装数量MPQ：2000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UCC28070QPWRQ1的批量USD价格：1.599（1000+）

UCC28070EVM — UCC28070 评估模块

UCC28070 评估模块是使用平均电流模式控制技术以达到临近单位功率因数的 300W、二相交错 PFC 前置稳压器。前置稳压器设计为在通用 AC 线路输入电压为 85V 至 265V 的范围内运行，并提供 390V 稳压 DC 输出。此评估模块演示了 TI 的交错 PFC 控制技术。