Two-Phase, Single-Chip Interleaving Power Factor Controller Increases Energy Performance and System Reliability
Texas Instruments Incorporated introduced today a single-chip, interleaved power factor correction (PFC) control circuit for multi-kilowatt communications, server and industrial system. The UCC28070 two-phase, average current-mode controller allows designers to simplify power design, increase system reliability and achieve a greater than 0.9 power factor rating, which improves energy efficiency. In line-operated systems with power levels from 75 W to 1 kW and above, the IC helps reduce total harmonic distortion, allowing systems to better maximize usable outlet power and accommodate extreme variations and disturbances in various AC line voltage levels used around the world. This PFC controller allows light-load phase management to enhance a system’s performance -- achieving higher efficiency over the entire load range. Phase management allows a system to turn on or off phases of the power supply, so that only the phases required to power the load are enabled.
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