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TPS54073PWP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54073PWP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 23 page 6,4 mm X 9,7 mm Typical Size www.ti.com FEATURES DESCRIPTION APPLICATIONS PVIN PH BOOT PGND VSENSE Output COMP AGND VBIAS Voltage Input 1 TPS54073 * * * * Optional TYPICAL APPLICATION R = 1.5 L W V = 1.5 V (core) VI/O = 3.3 V t - Time - 5 ms/div START-UP WAVEFORM WITH 3 PRECHARGE DIODES VIN Voltage Input 2 TPS54073 SLVS547 – FEBRUARY 2005 2.2 – 4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP • 8-m Ω MOSFET Switches for High Efficiency at As a member of the SWIFT™family of dc/dc regu- 14.5-A Peak Output Current lators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates • Separate Low-Voltage Power Bus all required active components. Included on the • Disabled Current Sinking During Start-Up substrate with the listed features are a true, high • Adjustable Output Voltage Down to 0.9 V performance, voltage error amplifier that enables maximum performance and flexibility in choosing the • Wide PWM Frequency: Fixed 350 kHz, 550 kHz output filter L and C components; an or Adjustable 280 kHz to 700 kHz undervoltage-lockout circuit to prevent start-up until • Synchronizable to 700 kHz the input voltage reaches 3 V; an internally or • Load Protected by Peak Current Limit and externally set slow-start circuit to limit in-rush Thermal Shutdown currents; and a power good output useful for processor/logic reset, fault signaling, and supply se- • Integrated Solution Reduces Board Area and quencing. Total Cost For reliable power up in output precharge appli- cations, the TPS54073 is designed to only source current during start-up. • Low-Voltage, High-Density Distributed Power Systems The TPS54073 is available in a thermally enhanced • Point of Load Regulation for High- 28-pin TSSOP (PWP) PowerPAD™ package, which Performance DSPs, FPGAs, ASICs, and eliminates bulky heatsinks. TI provides evaluation Microprocessors modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power • Broadband, Networking, and Optical supply designs to meet aggressive equipment devel- Communications Infrastructure opment cycles • Power PC Series Processors 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. SWIFT, PowerPAD are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2005, 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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