Product details

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HTSSOP (PWP) 28 43 mm² 4.4 x 9.7
  • 30-, 12-A Peak MOSFET Switches for High Efficiency at 6-A Continuous Output Source or Sink Current
  • Disabled Current Sinking During Start-Up
  • 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy
  • Wide PWM Frequency:
    Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
  • Synchronizable to 700 kHz
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Integrated Solution Reduces Board Area and Component Count
  • APPLICATIONS
    • Low-Voltage, High-Density Distributed Power Systems
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
    • Broadband, Networking and Optical Communications Infrastructure
    • Power PC Series Processors

PowerPAD and SWIFT are trademarks of Texas Instruments.

  • 30-, 12-A Peak MOSFET Switches for High Efficiency at 6-A Continuous Output Source or Sink Current
  • Disabled Current Sinking During Start-Up
  • 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy
  • Wide PWM Frequency:
    Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
  • Synchronizable to 700 kHz
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Integrated Solution Reduces Board Area and Component Count
  • APPLICATIONS
    • Low-Voltage, High-Density Distributed Power Systems
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
    • Broadband, Networking and Optical Communications Infrastructure
    • Power PC Series Processors

PowerPAD and SWIFT are trademarks of Texas Instruments.

As a member of the SWIFT™ family of dc/dc regulators, the TPS54673 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 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 V; an internally or 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.

For reliable power up in output precharge applications, the TPS54673 is designed to only source current during startup.

The TPS54673 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.

As a member of the SWIFT™ family of dc/dc regulators, the TPS54673 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 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 V; an internally or 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.

For reliable power up in output precharge applications, the TPS54673 is designed to only source current during startup.

The TPS54673 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.

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Technical documentation

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Type Title Date
* Data sheet Synchronous Buck Switcher w/Disabled Sinking During Start-Up datasheet (Rev. A) 13 Jan 2005
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Thermal Performance of SWIFT(TM) DC/DC Converters in the 28-Pin HTSSOP Package 04 Feb 2005
More literature XILINXPWR-082 EVM 23 Jul 2004
Application note Sequencing with TPS54x80 and TPS54x73 DC/DC Converters 14 Apr 2003
EVM User's guide DC/DC Converter With Disabled Sink During Start-Up EVM 17 Jan 2003
Application note Using Low Voltage SWIFT DC/DC Converters with Ceramic Capacitors 08 Jan 2003
Application note Optimizing the Layout of the TPS546xx for Thermal Performance (Rev. A) 08 Feb 2002
Application note Designing for Small-Size, High-Freq Applications Using TPS546xx DC/DC Converters 19 Oct 2001

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

TPS54673 TINA-TI Transient Reference Design

SLVM297.TSC (1085 KB) - TINA-TI Reference Design
Simulation model

TPS54673 TINA-TI Transient Spice Model

SLVM298.ZIP (36 KB) - TINA-TI Spice Model
Simulation model

TPS54673 Unencrypted Transient PSpice Model Package (Rev. A)

SLVM140A.ZIP (60 KB) - PSpice Model
Gerber file

Gerber File for TPS54x73EVM

SLVC053.ZIP (147 KB)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins Download
HTSSOP (PWP) 28 View options

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