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TPS54319

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2.95 V to 6 V input, 3 A, 2 MHz SWIFT™ synchronous step-down converter in a 3 mm x 3 mm QFN package

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Data sheet

TPS54319

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 360 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 360 Duty cycle (max) (%) 98
WQFN (RTE) 16 9 mm² 3 x 3
  • Two 45-m (typical) MOSFETs for High Efficiency at 3-A Loads
  • 300kHz to 2MHz Switching Frequency
  • 0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power Good Output
  • –40°C to 150°C Operating Junction Temperature Range
  • Thermally Enhanced 3mm × 3mm 16-pin QFN
  • Pin Compatible to TPS54318
  • APPLICATIONS
    • Low-Voltage, High-Density Power Systems
    • Point-of-Load Regulation for Consumer Applications such as Set Top Boxes,
      LCD Displays, CPE Equipment

SWIFT, SwitcherPro are trademarks of Texas Instruments.
  • Two 45-m (typical) MOSFETs for High Efficiency at 3-A Loads
  • 300kHz to 2MHz Switching Frequency
  • 0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power Good Output
  • –40°C to 150°C Operating Junction Temperature Range
  • Thermally Enhanced 3mm × 3mm 16-pin QFN
  • Pin Compatible to TPS54318
  • APPLICATIONS
    • Low-Voltage, High-Density Power Systems
    • Point-of-Load Regulation for Consumer Applications such as Set Top Boxes,
      LCD Displays, CPE Equipment

SWIFT, SwitcherPro are trademarks of Texas Instruments.

The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.

The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature.

Efficiency is maximized through the integrated 45m MOSFETs and 360µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency fold back and thermal shutdown protects the device during an over-current condition.

The TPS54319 is supported in the SwitcherPro™ Software Tool at www.ti.com/switcherpro.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.

The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature.

Efficiency is maximized through the integrated 45m MOSFETs and 360µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency fold back and thermal shutdown protects the device during an over-current condition.

The TPS54319 is supported in the SwitcherPro™ Software Tool at www.ti.com/switcherpro.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.
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Technical documentation

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Type Title Date
* Data sheet 2.95 V to 6 V Input, 3-A Output, 2MHz, Synchronous Step Down Switcher With Integ datasheet 28 Jan 2010
White paper 了解提升功率密度的權衡與技術 (Rev. C) PDF | HTML 27 Apr 2023
White paper 전력 밀도를 높이는 것의 장단점 및 기술의 이해 (Rev. C) PDF | HTML 26 Apr 2023
White paper Abwägung der Vor- und Nachteile und Beschreibung der Technologien zur Verbesseru (Rev. C) PDF | HTML 14 Apr 2023
White paper Understanding the trade-offs and technologies to increase power density (Rev. C) PDF | HTML 14 Apr 2023
Technical article Smaller size now possible in 3A point-of-load converters PDF | HTML 03 Jun 2015
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15 Sep 2010
EVM User's guide TPS54319EVM-626 3-A, SWIFT Regulator Evaluation Module 19 May 2010

Design & development

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

Evaluation board

TPS54319EVM-626 — Evaluation Module for TPS54319 Step-Down DC/DC Converter

The TPS54319EVM-626 is a fully assembled and tested circuit for evaluating the TPS54319 2.95V to 6V input 3A synchronous buck converter. There are terminal blocks for input and output. Additional test points are also provided.
User guide: PDF
Not available on TI.com
Simulation model

TPS54319 TINA-TI Average Reference Design

SLVM489.TSC (261 KB) - TINA-TI Reference Design
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Simulation model

TPS54319 TINA-TI Average Spice Model

SLVM488.ZIP (7 KB) - TINA-TI Spice Model
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Simulation model

TPS54319 TINA-TI Transient Reference Design

SLVM467.TSC (218 KB) - TINA-TI Reference Design
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Simulation model

TPS54319 TINA-TI Transient Spice Model

SLVM466.ZIP (55 KB) - TINA-TI Spice Model
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Simulation model

TPS54319 Unencrypted PSpice Average Model Package (Rev. A)

SLVM373A.ZIP (136 KB) - PSpice Model
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Simulation model

TPS54319 Unencrypted PSpice Transient Model Package (Rev. B)

SLIM292B.ZIP (41 KB) - PSpice Model
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Calculation tool

TPS54620DESIGN-CALC — TPS54620 and TPS54XXX Current-Mode Step-Down Converter Design Calculator

The Design Calculator Plus Application Note (SLVA352A) Calculator Tool calculates the critical external component values for the TPS54620/TPS54622/TPS54521/TPS54320/TPS54618/TPS54418/TPS54318/TPS54218/TPS54319. The calculator includes power stage design, feature design and Type II and Type III (...)
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS54218 — 2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter TPS54318 — 2.95V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter TPS54319 — 2.95 V to 6 V input, 3 A, 2 MHz SWIFT™ synchronous step-down converter in a 3 mm x 3 mm QFN package TPS54320 — 4.5V to 17V Input, 3A Synchronous Step-Down SWIFT™ Converter TPS54418 — 2.95V to 6V Input, 4A Synchronous Step-Down SWIFT™ Converter TPS54521 — 17V Input, 5A Synchronous Step-Down Converter TPS54618 — 2.95V to 6V Input, 6A, Synchronous Step-Down SWIFT™ Converter TPS54620 — 4.5-V to 17-V, 6-A synchronous SWIFT™ buck converter TPS54622 — 4.5-V to 17-V, 6-A synchronous SWIFT™ buck converter with hiccup current limit TPS54821 — 4.5-V to 17-V, 8-A synchronous buck converter with hiccup current limit TPS56921 — 4.5-V to 17-V, 9-A synchronous buck converter with VID control
Hardware development
Evaluation board
TPS54418EVM-375 — TPS54418 3.3V Input, 1.8V Output, 4A SWIFT™ Evaluation Module TPS54620EVM-374 — TPS54620 8V to 17V, 6A SWIFT™ Converter Evaluation Module
Software
Calculation tool
TPS54620DESIGN-CALC — TPS54620 & TPS54XXX Current-Mode Step-Down Converter Design Calculator
Download
Reference designs

TIDA-01378 — Wideband Receiver Reference Design for Upstream DOCSIS 3.1 Applications

This reference design consists of an analog front-end (AFE) signal chain for wideband receiver applications using the LMH2832 digitally controlled variable gain amplifier (DVGA) and ADS54J40 analog-to-digital converter (ADC). The design is primarily targeted for upstream DOCSIS 3.1 receiver (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WQFN (RTE) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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Information included:
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