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TPS40057 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40057 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page 5 13 12 16 15 1 2 3 KFF RT BP5 SGND VIN HDRV SW BP10 4 SYNC 11 ILIM TPS4005xPWP 6 SS/SD 7 VFB 8 COMP 14 BOOST LDRV 10 PGND 9 VIN VO + – + – UDG-03179 8 TPS40054 TPS40055 TPS40057 www.ti.com SLUS593H – DECEMBER 2003 – REVISED JULY 2012 WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER Check for Samples: TPS40054, TPS40055, TPS40057 1 FEATURES CONTENTS 2 • Operating Input Voltage 8 V to 40 V Device Ratings 2 • Input Voltage Feed-Forward Compensation Electrical Characteristics 3 • < 1 % Internal 0.7-V Reference Pin Descriptions 5 • Programmable Fixed-Frequency Up to 1-MHz Voltage Mode Controller Application Information 7 • Internal Gate Drive Outputs for High-Side and Design Examples 22 Synchronous N-Channel MOSFETs Additional References 27 • 16-Pin PowerPAD™ Package ( θJC = 2°C/W) • Thermal Shutdown DESCRIPTION The TPS4005x is a family of high-voltage, wide input • Externally Synchronizable (8 V to 40 V), synchronous, step-down controllers. • Programmable High-Side Sense Short-Circuit The TPS4005x family offers design flexibility with a Protection variety of user-programmable functions, including • Programmable Closed-Loop Soft-Start soft-start, UVLO, operating frequency, voltage feed- forward, high-side current limit, and loop • TPS40054 Source Only compensation. • TPS40055 Source/Sink The TPS4005x uses voltage feed-forward control • TPS40057 Source/Sink With VO Prebias techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to APPLICATIONS input line transients. Near-constant modulator gain • Power Modules with input variation eases loop compensation. The externally programmable current limit provides pulse- • Networking/Telecom by-pulse current limit, as well as hiccup mode • Industrial/Servers operation utilizing an internal fault counter for longer duration overloads. 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. 2 PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2012, 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. |
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