TPS54373

ACTIVE

3V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter for Prebiased Outputs

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TPS628503 ACTIVE 2.7-V to 6-V, 3-A, adjustable-frequency, step-down converter in SOT-583 package new generation

Product details

Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 6 Type Converter Switching frequency (min) (kHz) 280 Switching frequency (max) (kHz) 700
Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 6 Type Converter Switching frequency (min) (kHz) 280 Switching frequency (max) (kHz) 700
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • 60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current
  • Disabled Current Sinking During Start-Up
  • Adjustable Output Voltage Down to 0.9 V 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.

  • 60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current
  • Disabled Current Sinking During Start-Up
  • Adjustable Output Voltage Down to 0.9 V 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 TPS54373 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 TPS54373 is designed to only source current during start-up.

The TPS54373 is available in a thermally enhanced 20-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 TPS54373 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 TPS54373 is designed to only source current during start-up.

The TPS54373 is available in a thermally enhanced 20-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. B) 11 Feb 2005
Application note Sequencing with TPS54x80 and TPS54x73 DC/DC Converters 14 Apr 2003

Design & development

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

Simulation model

TPS54373 TINA-TI Transient Reference Design

SLVM299.TSC (1087 KB) - TINA-TI Reference Design
Simulation model

TPS54373 TINA-TI Transient Spice Model

SLVM300.ZIP (39 KB) - TINA-TI Spice Model
Simulation model

TPS54373 Unencrypted Transient PSpice Model Package (Rev. A)

SLVM141A.ZIP (65 KB) - PSpice Model
Gerber file

Gerber File for TPS54373EVM

SLVC046.ZIP (128 KB)
Package Pins Download
HTSSOP (PWP) 20 View options

Ordering & quality

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