Energy-saving, single-chip PFC for 80W consumer apps

Texas Instruments has introduced the industry's first single-chip, interleaved, transition-mode power factor correction (PFC) control circuit that helps lower power system cost and save energy in consumer applications, such as digital TVs, personal computers and entry-level server platforms.

The UCC28060 two-phase high-performance controller for 75- to 800-W applications simplifies power system design, minimizes switching losses, and saves system cost and valuable board space when compared to traditional single-phase, transition-mode topologies or continuous-conduction mode (CCM) topologies. In certain customer applications, designers have been able to reduce their overall bill of materials cost by as much as 20%, while achieving higher levels of performance in a smaller, thinner and lighter power supply design.

The UCC28060 efficiently meets the world's most stringent power factor requirements for consumer electronic systems. It features Natural Interleaving technology, which reduces the amount of input and output current ripple, distributes magnetics to improve thermal management, and provides light-load phase management. Its ripple cancellation feature significantly reduces ripple current compared to single-phase or alternative "master-slave" interleaved solutions.

Texas Instruments, www.ti.com