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UCC28019 Datasheet(PDF) 1 Page - Texas Instruments |
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UCC28019 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 49 page 1 FEATURES DESCRIPTION APPLICATIONS CONTENTS TYPICAL APPLICATION DIAGRAM + – Bridge Rectifier LINE INPUT V OUT EMI Filter UCC28019 R load GND ICOMP ISENSE GATE VCC VSENSE VCOMP VINS 1 2 3 4 8 7 6 5 Auxilary Supply UCC28019 SLUS755B – APRIL 2007 – REVISED DECEMBER 2007 www.ti.com 8-Pin Continuous Conduction Mode (CCM) PFC Controller • 8-pin Solution Without Sensing Line Voltage The UCC28019 8-pin active Power Factor Correction Reduces External Components (PFC) controller uses the boost topology operating in Continuous Conduction Mode (CCM). The controller • Wide-Range Universal AC Input Voltage is suitable for systems in the 100 W to >2 kW range • Fixed 65-kHz Operating Frequency over a wide-range universal ac line input. Startup • Maximum Duty Cycle of 97% current during under-voltage lockout is less than 200 µA. The user can control low power standby mode by • Output Over/Under-Voltage Protection pulling the VSENSE pin below 0.77 V. • Input Brown-Out Protection Low-distortion wave-shaping of the input current • Cycle-by-Cycle Peak Current Limiting using average current mode control is achieved • Open Loop Detection without input line sensing, reducing the Bill of • Low-Power User Controlled Standby Mode Materials component count. Simple external networks allow for flexible compensation of the current and voltage control loops. The switching frequency is internally fixed and trimmed to better than 5% • CCM Boost Power Factor Correction Power accuracy at 25 °C. Fast 1.5-A gate peak current drives Converters in the 100 W to >2 kW Range the external switch. • Server and Desktop Power Supplies Numerous system-level protection features include • Telecom Rectifiers peak current limit, soft over-current detection, • Industrial Electronics open-loop detection, input brown-out detection, • Home Electronics output over-voltage protection/under-voltage detection, a no-power discharge path on VCOMP, and overload protection on ICOMP. Soft-Start limits • Electrical Characteristics 3 boost current during start-up. A trimmed internal reference provides accurate protection thresholds • Device Information 10 and regulation set-point. An internal clamp limits the • Application Information 12 gate drive voltage to 12.5 V. • Design Example 23 • Additional References 43 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Similar Part No. - UCC28019_15 |
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Similar Description - UCC28019_15 |
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