Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

TPS54318

AKTIV

2,95 V bis 6 V-Eingang, 3A, Synchron-Abwärts-SWIFT™-Wandler

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Ähnliche Funktionalität wie verglichener Baustein
TPS62813-Q1 AKTIV Abwärtswandler für die Automobilindustrie, 2,75 bis 6 V, 3 A, mit fester Schaltfrequenz und SYNC in Smaller solution size and high accuracy.

Produktdetails

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) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 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) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 Duty cycle (max) (%) 98
WQFN (RTE) 16 9 mm² 3 x 3
  • 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 (VREF) 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 (VREF) 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS54318 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. C) PDF | HTML 06 Apr 2018
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mär 2024
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Calculating Efficiency (Rev. A) 06 Mär 2020
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 06 Feb 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Understanding Thermal Dissipation and Design of a Heatsink 04 Mai 2011
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15 Sep 2010
User guide TPS54318EVM-512 3-A, SWIFT Regulator Evaluation Module 23 Sep 2009

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Simulationsmodell

TPS54318 TINA-TI Transient Reference Design

SLVM651.TSC (172 KB) - TINA-TI Reference Design
Simulationsmodell

TPS54318 TINA-TI Transient Spice Model

SLVM652.ZIP (63 KB) - TINA-TI Spice Model
Simulationsmodell

TPS54318 Unencrypted PSpice Average Model Package (Rev. A)

SLVM897A.ZIP (36 KB) - PSpice Model
Simulationsmodell

TPS54318 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM640A.ZIP (54 KB) - PSpice Model
Berechnungstool

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 (...)
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Unterstützte Produkte und Hardware

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TPS54218 2,95 V bis 6 V-Eingang, 2A, Synchron-Abwärts-SWIFT™-Wandler TPS54318 2,95 V bis 6 V-Eingang, 3A, Synchron-Abwärts-SWIFT™-Wandler TPS54319 Synchroner Abwärtswandler, 2,95 bis 6 V Eingangsspannung, 3 A, 2 MHz im QFN-Gehäuse 3 x 3 mm TPS54320 4,5V bis 17V-Eingang, 3A, Synchron-Abwärts-SWIFT™-Wandler TPS54418 2,95 V bis 6 V-Eingang, 4 A, Synchron-Abwärts-SWIFT™-Wandler TPS54521 Synchroner 5-A-Abwärtswandler mit 17 V Eingangsspannung TPS54618 Synchroner Abwärtswandler SWIFT™, 2,95 bis 6 V Eingangsspannung, 6 A TPS54620 4,5 V bis 17 V, 6 A-Synchron-SWIFT™-Abwärtswandler TPS54622 4,5-V- bis 17-V-, 6-A-Synchron-SWIFT™-Abwärtswandler mit Hiccup-Strombegrenzung TPS54821 Synchroner Abwärtswandler, 4,5 bis 17 V Eingangsspannung, 8 A, mit Hiccup-Strombegrenzungsmodus TPS56921 4,5-V- bis 17-V-, 9-A-Synchron-Abwärtswandler mit VID-Steuerung
Hardware-Entwicklung
Evaluierungsplatine
TPS54418EVM-375 TPS54418 3,3 V-Eingang, 1,8 V-Ausgang, 4 A, SWIFT™ – Evaluierungsmodul TPS54620EVM-374 TPS54620 8 V–17 V, 6 A, SWIFT™-Wandler-Evaluierungsmodul
Software
Berechnungstool
TPS54620DESIGN-CALC TPS54620 und TPS54XXX Strommodus-Abwärtswandler-Design-Rechner
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Schaltplan: PDF
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Referenzdesigns

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Referenzdesigns

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTE) 16 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Support und Schulungen

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