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

LM22670

AKTIV

Abwärtswandler SIMPLE SWITCHER®, 4,5 bis 42 V, 3 A, mit Frequenz-Synchronisierung

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
LMQ66430 AKTIV Synchroner Abwärtswandler mit 36 V, 3 A niedrigem EMI-Wert und 1,5-µA-Ruhestrom Integrated input bypass capacitor and boot cap for lower EMI and smaller footprint, dual-random spread spectrum and lower IQ.
TLVM13630 AKTIV Kompaktes 3-A-Abwärtswandler-Leistungsmodul für 3 V bis 36 V Eingangsspannung und 1 V bis 6 V Ausgan Save board space, simplify design and speed time to market with an integrated-inductor power module.

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 TO-263 (NDR) 7 142.3416 mm² 10.16 x 14.01
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable with Low ESR Ceramic Capacitors
  • 120 mΩ N-channel MOSFET PFM Package
  • 100 mΩ N-channel MOSFET SO PowerPAD-8 Package
  • Output Voltage Options:
    -ADJ (Outputs as Low as 1.285 V)
    -5.0 (Output Fixed to 5 V)
  • ±1.5% Feedback Reference Accuracy
  • 500 kHz Default Switching Frequency
  • Adjustable Switching Frequency and Synchronization
  • –40°C to 125°C Operating Junction
    Temperature Range
  • Precision Enable Pin
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Fully WEBENCH® enabled
  • LM22670-Q1 is an Automotive Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
    Operating Junction Temperature)
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable with Low ESR Ceramic Capacitors
  • 120 mΩ N-channel MOSFET PFM Package
  • 100 mΩ N-channel MOSFET SO PowerPAD-8 Package
  • Output Voltage Options:
    -ADJ (Outputs as Low as 1.285 V)
    -5.0 (Output Fixed to 5 V)
  • ±1.5% Feedback Reference Accuracy
  • 500 kHz Default Switching Frequency
  • Adjustable Switching Frequency and Synchronization
  • –40°C to 125°C Operating Junction
    Temperature Range
  • Precision Enable Pin
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Fully WEBENCH® enabled
  • LM22670-Q1 is an Automotive Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
    Operating Junction Temperature)

The LM22670 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22670 device is a member of Texas Instruments’ SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCH® design tool. TI's WEBENCH® tool includes features such as external component calculation, electrical simulation, thermal simulation, and build-It boards for easy design-in.

The LM22670 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22670 device is a member of Texas Instruments’ SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCH® design tool. TI's WEBENCH® tool includes features such as external component calculation, electrical simulation, thermal simulation, and build-It boards for easy design-in.

Herunterladen Video mit Transkript ansehen Video

Technische Dokumentation

star =Von TI ausgewählte Top-Empfehlungen für dieses Produkt
Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.
Alle anzeigen 31
Typ Titel Datum
* Data sheet LM22670/-Q1 42-V, 3-A SIMPLE SWITCHER®, Step-Down Voltage Regulator With Features datasheet (Rev. P) PDF | HTML 28 Okt 2014
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mär 2024
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 Aug 2023
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Quantifying the value of wide VIN PDF | HTML 15 Jun 2016
Technical article DC/DC converter datasheets – System losses demystified PDF | HTML 25 Apr 2016
Technical article DC/DC converter datasheets – System efficiency demystified PDF | HTML 18 Apr 2016
Technical article DC/DC converter datasheets - Quiescent current demystified: Part two PDF | HTML 11 Apr 2016
Application note Know Your Limits 02 Jun 2015
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12 Sep 2014
Application note AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) 06 Mai 2013
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 06 Mai 2013
Application note AN-1797 TO-263 THIN Package (Rev. A) 24 Apr 2013
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 Apr 2013
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23 Apr 2013
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23 Apr 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 Apr 2013
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 23 Apr 2013
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23 Apr 2013
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23 Apr 2013
EVM User's guide AN-1885 LM22670 Evaluation Board (Rev. D) 23 Apr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C) 23 Apr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 Apr 2013
EVM User's guide LM22670 Evaluation Board Inverting Topology and Application Notes (Rev. E) 23 Apr 2013
Application note SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. A) 23 Apr 2013
Design guide SIMPLE SWITCHER® Design Guide 11 Apr 2011
Application note Input and Output Capacitor Selection 19 Sep 2005
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 Jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 Mai 2004

Design und Entwicklung

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

Evaluierungsplatine

LM22670EVAL — LM22670 3 A, SIMPLE SWITCHER-Regler mit Frequenzanpassung oder Synchron- and Präzisions-Enable-EVM

The LM22670 evaluation board is designed to demonstrate the capabilities of the LM22670 switching regulator. The LM22670 evaluation board is configured to provide an output voltage of 3.3V up to 3A load current with an input voltage range of 4.5V to 42V. Due to the low RDS(ON) of the integrated (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM22670INVEVAL — LM22670 invertierender Ausgangsregler mit Freqanpass. oder Synch. Bis zu 1 MHz und Precision Enable

The LM22670 inverting evaluation board is designed to demonstrate the capabilities of the LM22670 switching regulator in a polarity inverting topology. The LM22670 inverting evaluation board is configured to provide an output of minus 5V (-5V) up to 1.5A load current with an input voltage range of (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM22670-5.0 PSpice Average Model

SNVM150.ZIP (53 KB) - PSpice Model
Simulationsmodell

LM22670-5.0 PSpice Transient Model

SNVM151.ZIP (216 KB) - PSpice Model
Simulationsmodell

LM22670-5.0 TINA-TI Average Reference Design

SNVM117.TSC (145 KB) - TINA-TI Reference Design
Simulationsmodell

LM22670-5.0 TINA-TI Average Spice Model

SNVM116.ZIP (8 KB) - TINA-TI Spice Model
Simulationsmodell

LM22670-5.0 TINA-TI Line Transient Reference Design

SNVM121.TSC (186 KB) - TINA-TI Reference Design
Simulationsmodell

LM22670-5.0 TINA-TI Load Transient Reference Design

SNVM120.TSC (191 KB) - TINA-TI Reference Design
Simulationsmodell

LM22670-5.0 TINA-TI Startup Transient Reference Design

SNVM118.TSC (214 KB) - TINA-TI Reference Design
Simulationsmodell

LM22670-5.0 TINA-TI Steady StateTransient Reference Design

SNVM119.TSC (208 KB) - TINA-TI Reference Design
Simulationsmodell

LM22670-5.0 TINA-TI Transient Spice Model

SNVM122.ZIP (22 KB) - TINA-TI Spice Model
Simulationsmodell

LM22670-5.0 Unencrypted PSpice Average Model

SNVM808.ZIP (1 KB) - PSpice Model
Simulationsmodell

LM22670-5.0 Unencrypted PSpice Transient Model

SNVM810.ZIP (4 KB) - PSpice Model
Simulationsmodell

LM22670-ADJ PSpice Average Model

SNVM232.ZIP (51 KB) - PSpice Model
Simulationsmodell

LM22670-ADJ PSpice Transient Model

SNVM231.ZIP (214 KB) - PSpice Model
Simulationsmodell

LM22670-ADJ Unencrypted PSpice Average Model

SNVM811.ZIP (1 KB) - PSpice Model
Simulationsmodell

LM22670-ADJ Unencrypted PSpice Transient Model

SNVM809.ZIP (4 KB) - PSpice Model
Berechnungstool

LM2267X-22680DESIGN-CALC — LM2267x, LM22680 Schnellstart-Simple Switcher-Komponentenrechner

Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HSOIC (DDA) 8 Ultra Librarian
TO-263 (NDR) 7 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

TI E2E™-Foren mit technischem Support von TI-Ingenieuren

Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.

Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support. ​​​​​​​​​​​​​​

Videos