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

TPS54218

AKTIV

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

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TPS628502 AKTIV Abwärtswandler mit einstellbarer Frequenz, 2,7 bis 6 V, 2 A, im SOT583-Gehäuse Smaller solution size and high accuracy.

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 2 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) 2 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 2-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 TPS54218 with the WEBENCH® Power Designer
  • Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-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 TPS54218 with the WEBENCH® Power Designer

TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54218 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 × 3-mm, thermally-enhanced QFN package.

The TPS54218 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.

TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54218 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 × 3-mm, thermally-enhanced QFN package.

The TPS54218 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 TPS54218 2.95-V to 6-V Input, 2-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. F) PDF | HTML 04 Mai 2020
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mär 2024
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
Application note Improving Efficiency at Higher Loads with High Switching Frequencies PDF | HTML 16 Jun 2021
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
Technical article How to get started with current sense amplifiers – part 2 PDF | HTML 26 Mai 2015
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 TPS54218EVM-511 2-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.

Evaluierungsplatine

TPS54218EVM-511 — TPS54218 6 V-Eingang, 1.8 V-Ausgang, 2 A, SWIFT™-Wandler – Evaluierungsmodul

The TPS54218EVM-511 evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54218 regulator. The TPS54218EVM-511 is designed to provide up to 2A output current, from an input voltage of 3V to 6V (Vin start= 3.1V). The (...)
Benutzerhandbuch: PDF
Simulationsmodell

TPS54218 PSpice Average Model

SLVM507.ZIP (25 KB) - PSpice Model
Simulationsmodell

TPS54218 PSpice Transient Model (Rev. B)

SLIM220B.ZIP (118 KB) - PSpice Model
Simulationsmodell

TPS54218 SIMPLIS Transient and Average Model

SLVMD99.ZIP (876 KB) - SIMPLIS Model
Simulationsmodell

TPS54218 TINA-TI Average Reference Design

SLVM531.TSC (800 KB) - TINA-TI Reference Design
Simulationsmodell

TPS54218 TINA-TI Average Spice Model

SLVM530.ZIP (8 KB) - TINA-TI Spice Model
Simulationsmodell

TPS54218 TINA-TI Transient Reference Design

SLVM139.TSC (193 KB) - TINA-TI Reference Design
Simulationsmodell

TPS54218 TINA-TI Transient Spice Model

SLVM138.ZIP (62 KB) - TINA-TI Spice 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 (...)
Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Wandler (integrierter FET)
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 Synchroner Abwärtswandler SWIFT™ für Eingangsspannungen von 4.5 V bis 17 V, 3 A 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
Referenzdesigns

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Significant technological advancements and high degree of integration in Medical imaging, especially hand-held ultrasound smart probes, are pushing engineers to come up with highly-efficient, noise immune power solutions in a small size. This reference design documents end to end power and data (...)
Design guide: PDF
Schaltplan: PDF
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

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