描述 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.

特性 Features

? Controlled Baseline
? One Assembly Site
? One Test Site
? One Fabrication Site

? Extended Temperature Performance of -55°C to \\xA0125°C
? Enhanced Diminishing Manufacturing Sources (DMS) Support
? Enhanced Product-Change Notification
? Qualification Pedigree
? 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current
? Adjustable Output Voltage Down to 0.9 V With 1% Accuracy
? Externally Compensated for Design Flexibility
? Fast Transient Response
? Wide PWM Frequency: Fixed 350 kHz, 550 kHz, or Adjustable 280 kHz to 700 kHz
? Load Protected by Peak Current Limit and Thermal Shutdown
? Integrated Solution Reduces Board Area and Total Cost
? 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 Communications Infrastructure
? Portable Computing/Notebook PCs


Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.