1FEATURES
• Tracks Externally Applied Reference Voltage
• 15-mΩ MOSFET Switches for High Efficiency
at 9-A Continuous Output Source or Sink
Current
• 6% to 90% V I 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

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.