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UCC28713 Datasheet(PDF) 21 Page - Texas Instruments |
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UCC28713 Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 32 page  UCC28710, UCC28711 UCC28712, UCC28713 UCC28714, UCC28715 www.ti.com SLUSB86 – NOVEMBER 2012 Voltage Terms in Volts • VBLK: highest bulk capacitor voltage for stand-by power measurement. • VBULK(min): minimum voltage on CB1 and CB2 at full power. • VOCBC: target cable compensation voltage at the output terminals. • VCBC(max): maximum voltage at the CBC pin at the maximum converter output current (see ELECTRICAL CHARACTERISTICS). • VCCR: constant-current regulating voltage (see ELECTRICAL CHARACTERISTICS). • VCST(max): CS pin maximum current-sense threshold (see ELECTRICAL CHARACTERISTICS). • VCST(min): CS pin minimum current-sense threshold (see ELECTRICAL CHARACTERISTICS). • VDD(off): UVLO turn-off voltage (see ELECTRICAL CHARACTERISTICS). • VDD(on): UVLO turn-on voltage (see ELECTRICAL CHARACTERISTICS). • VOΔ: output voltage drop allowed during the load-step transient. • VDSPK: peak MOSFET drain-to-source voltage at high line. • VF: secondary rectifier forward voltage drop at near-zero current. • VFA: auxiliary rectifier forward voltage drop. • VLK: estimated leakage inductance energy reset voltage. • VOCV: regulated output voltage of the converter. • VOCC: target lowest converter output voltage in constant-current regulation. • VREV: peak reverse voltage on the secondary rectifier. • VRIPPLE: output peak-to-peak ripple voltage at full-load. • VVSR: CV regulating level at the VS input (see ELECTRICAL CHARACTERISTICS). AC Voltage Terms in VRMS • VIN(max): maximum input voltage to the converter. • VIN(min): minimum input voltage to the converter. • VIN(run): converter input start-up (run) voltage. Efficiency Terms • ηSB: estimated efficiency of the converter at no-load condition, not including start-up resistance or bias losses. For a 5-V USB charger application, 60% to 65% is a good initial estimate. • η: converter overall efficiency. • ηXFMR: transformer primary-to-secondary power transfer efficiency. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 21 Product Folder Links: UCC28710, UCC28711 UCC28712, UCC28713 UCC28714, UCC28715 |
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