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

LM62440-Q1

AKTIV

3-V bis 36-V, 4-A, rauscharmer Synchron-Abwärtswandler für die Automobilindustrie

Produktdetails

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • HotRod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • 2.1-MHz and 400-kHz factory options
    • Adjustable SW node rise time
    • Pin selectable FPWM mode for constant frequency at light loads
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltages
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • HotRod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • 2.1-MHz and 400-kHz factory options
    • Adjustable SW node rise time
    • Pin selectable FPWM mode for constant frequency at light loads
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltages
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.

Herunterladen Video mit Transkript ansehen Video

Ähnliche Produkte, die für Sie interessant sein könnten

Gleiche Funktionalität, gleiche Pinbelegung wie verglichener Baustein
LM62435-Q1 AKTIV 3-V bis 36-V, 3,5-A, rauscharmer Synchron-Abwärtswandler für die Automobilindustrie 3.5-A current limit

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 9
Typ Titel Datum
* Data sheet LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E) PDF | HTML 18 Apr 2022
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Functional safety information LM62440-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A) PDF | HTML 17 Mai 2022
Application note How to Migrate Between LM614xx and LM624xx Product Families PDF | HTML 01 Nov 2021
Technical article Introduction to EMI: Standards, causes and mitigation techniques PDF | HTML 21 Apr 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 18 Nov 2020
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 11 Dez 2019
EVM User's guide LM62440-Q1 EVM User's Guide 22 Jun 2018

Design und Entwicklung

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

Evaluierungsplatine

LM62440EVM — Evaluierungsmodul für synchronen Abwärtswandler mit 36 V und niedrigem EMI von 4 A, 5 V, 2 MHz

The LM62440 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM62440 synchronous step-down converter.  The LM62440 provides exceptional efficiency, low Iq, and low EMI in small solution size.
Benutzerhandbuch: PDF
Evaluierungsplatine

LP877451Q1EVM — LP8774x-Q1 – Evaluierungsmodul für ADAS-PMIC, rauscharme Konfiguration sowie Abwärtswandlung auf 3 V

Der LP8774x-Q1-Baustein wurde entwickelt, um die Power-Management-Anforderungen der AWR- und IWR-MMICs verschiedener Radaranwendungen im Automobilbereich und in der Industrie zu erfüllen. Das Gerät verfügt über drei DC/DC-Abwärtswandler, einen Aufwärtswandler für 5 V und einen LDO für 1,8 V/3,3 V. (...)

Benutzerhandbuch: PDF | HTML
Simulationsmodell

LM62440APP-Q1 PSpice Transient Model

SNVMC36.ZIP (142 KB) - PSpice Model
Simulationsmodell

LM62440BPP-Q1 PSpice Transient Model

SNVMC37.ZIP (280 KB) - PSpice Model
Simulationsmodell

LM62440CPP-Q1 PSpice Transient Model

SNVMC38.ZIP (280 KB) - PSpice Model
Leiterplatten-Layout

LM62440 EVM Design files Upload

SNVR477.ZIP (3141 KB)
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN-HR (RJR) 14 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