TPS54372 Datasheet | Texas Instruments

FEATURES - Tracks Externally Applied Reference Voltage - 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current - 6% to 90% VI Output Tracking Range - Wide PWM Frequency: Fixed 350 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 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 DESCRIPTION As a member of the SWIFT™ family of dc/dc regulators, the TPS54372 low-input voltage, high-output current, synchronous-buck PWM converter integrates all required active ponents. 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 ponents; 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 status output to indicate valid operating conditions. The TPS54372 is available in a thermally enhanced 20-pin TSSOP (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. - Output Voltage - 50 m V/div IO - Output Current - 1 A/div SIMPLIFIED SCHEMATIC VDDQ Input SIMPLIFIED SCHEMATIC BOOT PGND REFIN VBIAS AGND VSENSE VTTQ pensation Network TRANSIENT RESPONSE VI = 5 V, VO = 1.25 V 0 A to 2.25 A t - Time - 25 ms/div 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...