The UCC28060 and UCC28070 models are PFC controllers featuring Natural Interleaving. They simplify design, enhance reliability and improve power factor and efficiency. Their uses range from industrial applications, through LCD TVs to multikilowatt communications systems. Phase management ensures very high efficiency even under low load.

UCC28070

Key Features

• 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
• 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

Please note that there is an Evaluation Board available - read more on the Webpage 'Texas Instruments UCC28060 Evaluation Module' below!

Related Links

Webpage Texas Instruments UCC28060
Datasheet  Texas Instruments UCC28060 (PDF 947 kB)
Webpage Texas Instruments UCC28060 Evaluation Module
Webpage Texas Instruments UCC28060 Applications Note

UCC28070

Key Features

• Programmable Frequency (10 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 
   

Applications

Related Links

Webpage Texas Instruments UCC28070
Datasheet Texas Instruments UCC28070 (PDF 742 kB)
Webpage Texas Instruments UCC28070 Technical Documents