TPS54972数据手册集成电路（IC）的特殊用途稳压器规格书PDF

描述 Description

As a member of the SWIFT™ family of dc/dc regulators, the TPS54972 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 under transient conditions 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 3.0 V; an internally set slow-start circuit to limit in-rush currents; and a status output to indicate valid operating conditions.The TPS54972 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.

特性 Features

• Tracks Externally Applied Reference Voltage
• 15-m MOSFET Switches for High Efficiency at 9-A Continuous Output Source or Sink Current
• 6% to 90% VI Output Tracking Range
• Wide PWM Frequency: Fixed 350 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
• DDR Memory Termination Voltage
• Active Termination of GTL and SSTL High-Speed Logic Families
• DAC Controlled High Current Output Stage
• Precision Point of Load Power Supply