TPS54314 Datasheet | Texas Instruments

Features - 1 60-mΩ, MOSFET Switches for High Efficiency at 3-A Continuous Output Source and Sink Current - 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed Output Voltage Devices With 1.0% Initial Accuracy - Internally pensated for Low Parts Count - Fast Transient Response - Wide PWM Frequency - Fixed 350 k Hz, 550 k Hz or Adjustable 280 k Hz to 700 k Hz - Load Protected by Peak Current Limit and Thermal Shutdown - Integrated Solution Reduces Board Area and Total Cost 2 Applications - Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V - Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors - Broadband, Networking and Optical munications Infrastructure - Portable puting/Notebook PCs Input Simplified Schematic TPS54316 BOOT PGND VBIAS VSENSE Output 3 Description As members of the SWIFT™ family of DC - DC regulators, the TPS54311, TPS54312, TPS54313, TPS54314, TPS54315 and TPS54316 low-inputvoltage high-outputcurrent synchronous-buck PWM converters integrate all required active ponents. 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 powergood output useful for processor/logic reset, fault signaling, and supply sequencing. The TPS54311, TPS54312, TPS54313, TPS54314, TPS54315 and TPS54316 devices are available in a thermally enhanced 20-pin HTSSOP (PWP) Power PAD™ 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. Device Information(1) PART NUMBER PACKAGE OUTPUT VOLTAGE TPS54311 0.9 V TPS54312 1.2 V TPS54313 TPS54314 HTSSOP (20) 1.5 V...