Single-Chip Interleaved PFC Controllers

TI’s new UCC28070 and UCC28060 are the industry’s first single-chip, interleaved power factor correction control circuits. These ICs simplify power design, increase system reliability and achieve greater power factor and high efficiency ratings in applications ranging from multi-kilowatt communication, server and industrial systems, to digital TVs and PCs. That’s High-Performance Analog>>Your Way™

KEY APPLICATIONS  UCC28070   UCC28060 • High end servers   • DTV • Base stations   • Adapters • Data centers   • Entry-level servers • HVAC   • Desktops • White goods   • Gaming • Motor control   • Lighting • And more   • And more  KEY FEATURES  UCC28070    UCC28060 • Interleaved average current mode PWM control • Advanced current synthesizer for superior efficiency, accurate current sensing and high power factor • Highly linear multiplier output with internal voltage feed-forward correction for near unity power factor • Programmable switching frequency (30 kHz to 300 kHz) • Selectable frequency dithering for reduced EMI • Phase management for high-efficiency light-load operation   • 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

High-Performance Analog >> Your Way