TPS54318

ACTIVO

Convertidor SWIFT™ reductor síncrono con entrada de 2.95 V a 6 V y 3 A

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Hoja de datos

document-pdfAcrobat TPS54318 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. C) (Inglés) PDF | HTML

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TPS54318

ACTIVO

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Detalles del producto

Rating

Catalog

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

6

Vin (min) (V)

2.95

Vout (max) (V)

4.5

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.00035

Duty cycle (max) (%)

98

Rating

Catalog

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

6

Vin (min) (V)

2.95

Vout (max) (V)

4.5

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.00035

Duty cycle (max) (%)

98

WQFN (RTE)

16

9 mm² (3 mm × 3 mm)

Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
Switching Frequency: 200 kHz to 2 MHz
Voltage Reference Over Temperature: 0.8 V ± 1%
Synchronizes to External Clock
Adjustable Soft Start/Sequencing
UV and OV Power-Good Output
Low Operating and Shutdown Quiescent Current
Safe Start-Up into Prebiased Output
Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
Operating Junction Temperature Range: –40°C to 150°C
Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
Create a Custom Design Using the TPS54318 With the WEBENCH^® Power Designer

Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
Switching Frequency: 200 kHz to 2 MHz
Voltage Reference Over Temperature: 0.8 V ± 1%
Synchronizes to External Clock
Adjustable Soft Start/Sequencing
UV and OV Power-Good Output
Low Operating and Shutdown Quiescent Current
Safe Start-Up into Prebiased Output
Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
Operating Junction Temperature Range: –40°C to 150°C
Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
Create a Custom Design Using the TPS54318 With the WEBENCH^® Power Designer

TheTPS54318 device is a full-featured, 6-V, 3-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54318 device 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 device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.

The TPS54318 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage 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 soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

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

TheTPS54318 device is a full-featured, 6-V, 3-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54318 device 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 device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.

The TPS54318 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage 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 soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

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

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	TPS54318 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. C)	PDF \| HTML	6/04/2018
	Nota sobre la aplicación	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25/03/2024
	Guía de selección	Buck Converter Quick Reference Guide (Rev. B)		8/04/2021
	Nota sobre la aplicación	Calculating Efficiency (Rev. A)		6/03/2020
	Guía de selección	SWIFT DC/DC Converters Selector Guide (Rev. G)		6/02/2019
	Guía de selección	Power Management Guide 2018 (Rev. R)		25/06/2018
	Nota sobre la aplicación	Understanding Thermal Dissipation and Design of a Heatsink		4/05/2011
	Nota sobre la aplicación	Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A)		15/09/2010
	Guía del usuario	TPS54318EVM-512 3-A, SWIFT Regulator Evaluation Module		23/09/2009

Diseño y desarrollo

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