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UCC28056DBVR Datasheet(PDF) 1 Page - Texas Instruments |
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UCC28056DBVR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 44 page Line Voltage (Vrms) 80 100 120 140 160 180 200 220 240 260 280 20 25 30 35 40 45 50 D005 Copyright © 2017, Texas Instruments Incorporated AC Bus Ground Vout Bus VCC DRec 1 2 3 6 5 4 COMP ZCD/CS VOSNS VCC DRV GND ~ ~ + ± RZC1 RZC2 RDG RCS C3 LBST C4 CCO1 CCO2 RCO2 CO ROS2 ROS1 DBST Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to change without notice. UCC28056 SLUSD37 – OCTOBER 2017 UCC28056 6-Pin Single-Phase Transition-Mode PFC Controller 1 1 Features 1 • Transition Mode PFC – Good Efficiency – Low EMI at High Output Power • Unified Algorithm for Working in CrM and DCM (with high power factor across the entire operating range) • Fast, Enhanced Dynamic Response • 1.0-A and 0.7-A Drive Capability • User Adjustable Valley Switching • Industry Best Audibility Performance Over Entire Load Range • Industry Best Light-Load Efficiency with Advanced Frequency Shaping in DCM and CrM • Small Footprint 6-pin SOT-23(6) Package • No ZCD Winding for Valley Detection • Helps Enable Compliance to IEC61000-3-2 2 Applications • Desktop Computing • Digital TV SMPS • Gaming • Set Top Box • AC Adapter Front End • Electronic Lamp Ballast • Entry-Level Server and Web Server 3 Description UCC28056 is a fully featured PFC controller offering excellent light load efficiency and standby power. UCC28056 simplifies the design of power supply system’s requiring good power factor, that must also be capable of meeting today's tough standards for efficiency and standby power. At full load, UCC28056 operates the PFC power stage at maximum switching frequency in Transition Mode. At reduced load, the part transitions seamlessly into Discontinuous Conduction mode, automatically reducing switching frequency for maximum efficiency. At light load, DCM operation is combined with Burst Mode operation to further improve light load efficiency and standby power. UCC28056 integrates all the features necessary to implement a high performance and robust PFC stage into a 6-pin package and requires a minimal number of external components to interface with the power stage. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) UCC28056 SOT-23(6) 2.90 mm x 1.6 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic Standby Power |
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