●As a member of the SWIFT family of dc/dc regulators, family of dc/dc regulators,the TPS54873 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 enables maximum performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4 V; an internally or externally set slow-start circuit to limit inrush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.
●For reliable power up in output precharge applications, the TPS54873 is designed to only source current during startup.
●The TPS54873 is available in a thermally enhanced 28-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.
● 30-m, 12-A Peak MOSFET Switches for High Efficiency at 8-A Continuous Output Source or Sink Current
● Disabled Current Sinking During Start-Up
● 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy
● Wide PWM Frequency:
● Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
● Synchronizable to 700 kHz
● Load Protected by Peak Current Limit and Thermal Shutdown
● Integrated Solution Reduces Board Area and Component Count
● APPLICATIONS
● Low-Voltage, High-Density Distributed Power Systems
● Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
● Broadband, Networking and Optical Communications Infrastructure
● Power PC Series Processors
●PowerPAD and SWIFT are trademarks of Texas Instruments.
Part 3D Model
