TPS54972PWP.A中文资料德州仪器数据手册PDF规格书

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.