Two Phase Power Factor Correction Chip - UCC28060 - Texas Instruments

Texas Instruments introduced the UCC28060,  a two phase, interleaved, transition-mode power factor correction (PFC) controller.  The new Power Factor Correction chip save energy in consumer applications, such as personal computers and digital TVs.  The UCC28060 two-phase high-performance controller for 75 to 800 Watts applications minimizes switching losses, simplifies power system design, and saves PCB space when compared to traditional single-phase, transition-mode topologies or continuous-conduction mode (CCM) topologies.

Key spec. of UCC28060 Power Factor Correction controller

• UVLO Thresholds On/Off: 12/10 Volts
• Max Operating Supply: 18 Volts
• Startup Current: 0.2 mA
• Operating Supply Current: 21 mA
• Vref: 6 Volts
• Vref tol: 2 percents
• Max Duty Cycle: 100 percents
• Max Operating Frequency:  0.5 MHz
• Pin/Package 16SOIC

TI’s UCC28060 Two Phase Power Factor Correction Chip

The UCC28060 Power Factor Correction controller 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. The UCC28060's ripple cancellation feature significantly reduces ripple current compared to single-phase or alternative master-slave interleaved solutions.

In certain customer applications, designers have been able to reduce their overall bill of materials cost by as much as 20 percent, while achieving higher levels of performance in a smaller, thinner and lighter power supply design. The device also allows a designer to reduce capacitor size by 27 percent, and it gives designers the ability to use a smaller, less expensive electromagnetic interference (EMI) filter.

The UCC28060 Power Factor Correction controller offers light-load phase management, enabling a power supply to operate at high efficiency over the range of the load, enhancing system performance and aiding OEMs' efforts to achieve 80 Plus and Energy Star compliance. The UCC28060 can increase efficiency by up to five percent at light load conditions. Phase management allows the user to turn on or off phases of the power supply so that only the phases required to power the load are enabled.

The UCC28060 Power Factor Correction controller offers several unique system control and protection features to improve power system reliability. The Power Factor Correction chip incorporates the failsafe over-voltage protection circuit, providing dual paths of voltage sensing to protect against intermediate voltage and short circuited. The chip has  sensorless current shaping to protect the system from potential damage that may otherwise occur during brown out conditions and recovery.

The UCC28060 Power Factor Correction controller is shipped in 16-pin SOIC package. The sample is awailable now. Volume production is scheduled for June this year.

Price: $1.30 each for 1K lot qty

TI will showcase the new Power Factor Correction controller and other innovative power management technology at the Power Conversion and Intelligent Motion (PCIM) conference in Nuremberg, Germany, May 22-24.

Further reading:  TI Power Factor Correction Controller