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TPS54310PWP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54310PWP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page TPS54310 SLVS412A – DECEMBER 2001 – REVISED JUNE 2002 3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT ) (6,3 mm x 6,4 mm) Typical Size FEATURES D 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current D 0.9-V to 3.3-V Adjustable Output Voltage With 1% Accuracy D Externally Compensated for Design Flexibility D Fast Transient Response D Wide PWM Frequency: Fixed 350 kHz, 550 kHz, or Adjustable 280 kHz to 700 kHz D Load Protected by Peak Current Limit and Thermal Shutdown D Integrated Solution Reduces Board Area and Total Cost APPLICATIONS D Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V D Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors D Broadband, Networking and Optical Communications Infrastructure D Portable Computing/Notebook PCs DESCRIPTION As members of the SWIFT family of dc/dc regulators, the TPS54310 low-input-voltage high-output-current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing. The TPS54310 device is available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles. VIN PH TPS54310 BOOT PGND COMP VSENSE AGND VBIAS Compensation Network Input Output SimplifiedSchematic 80 82 84 86 88 90 92 94 96 0 0.5 1 1.5 2 2.5 3 Load Current – A TA = 25°C VI = 5 V VO = 3.3 V EFFICIENCY vs LOAD CURRENT PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. PowerPAD and SWIFT are trademarks of Texas Instruments. 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. www.ti.com Copyright 2002, Texas Instruments Incorporated |
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