Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)

LM61460-Q1

ACTIVO

Convertidor reductor síncrono de 3 V a 36 V, 6 A y bajo ruido para automoción

Detalles del producto

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 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 EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 8 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) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 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 EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 8 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
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
  • 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
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
  • 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 LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency 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, ensures exceptional efficiency across the entire load range.

The LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency 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, ensures exceptional efficiency across the entire load range.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM61460-Q1 Automotive 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. F) PDF | HTML 22 jun 2021
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 28 nov 2023
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 16 ago 2023
Analog Design Journal Thermal design concerns for buck converters in high‐power automotive apps (Rev. A) PDF | HTML 07 jun 2023
Application note Using the LM61460-Q1 and LM61495-Q1 in USB Type-C Applications PDF | HTML 15 dic 2021
More literature Advanced Power-Converter Features for Reducing EMI PDF | HTML 07 dic 2021
Application note How to Migrate Between LM614xx and LM624xx Product Families PDF | HTML 01 nov 2021
Functional safety information LM614xx-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B) PDF | HTML 15 sep 2021
EVM User's guide LM61460-Q1 EVM User's Guide (Rev. D) PDF | HTML 30 jul 2021
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 jul 2021
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 18 nov 2020
Application note PCB Thermal Design Tips for Automotive DC/DC Converters PDF | HTML 12 nov 2020
Technical article How device-level features and package options can help minimize EMI in automotive PDF | HTML 21 ago 2020
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 11 dic 2019
Technical article Powering infotainment systems of the future PDF | HTML 07 oct 2019
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 09 may 2019
Technical article Effects of IC package on EMI performance PDF | HTML 22 may 2018
Technical article Designing USB into challenging automotive applications PDF | HTML 04 abr 2018
Application note Designing High Performance, Low-EMI, Automotive Power Supplies 30 sep 2017

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LM61460EVM — Módulo de evaluación de convertidor reductor síncrono de 36 V, 6 A, 5 V, 400 kHz y bajo EMI

The LM61460 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM61460 synchronous step-down converter.  The LM61460 provides exceptional efficiency, low IQ, and low EMI in small solution size.
Guía del usuario: PDF | HTML
Modelo de simulación

LM61460AAN-Q1 PSpice Transient Model (Rev. A)

SNVMBW2A.ZIP (99 KB) - PSpice Model
Modelo de simulación

LM61460AAN-Q1 TINA-TI Startup Transient Model (Rev. A)

SNVMBX4A.TSC (187 KB) - TINA-TI Spice Model
Modelo de simulación

LM61460AAN-Q1 TINA-TI Steady State Transient Model (Rev. A)

SNVMBX5A.TSC (176 KB) - TINA-TI Spice Model
Modelo de simulación

LM61460AAS-Q1 PSpice Average Model

SNVMC61.ZIP (273 KB) - PSpice Model
Modelo de simulación

LM61460AAS-Q1 PSpice Transient Model (Rev. A)

SNVMBW0A.ZIP (98 KB) - PSpice Model
Modelo de simulación

LM61460AAS-Q1 TINA-TI Startup Transient Model (Rev. A)

SNVMBX2A.TSC (187 KB) - TINA-TI Spice Model
Modelo de simulación

LM61460AAS-Q1 TINA-TI Steady State Transient Model (Rev. A)

SNVMBX3A.TSC (176 KB) - TINA-TI Spice Model
Modelo de simulación

LM61460AFS-Q1 PSpice Transient Model (Rev. A)

SNVMBW1A.ZIP (106 KB) - PSpice Model
Modelo de simulación

LM61460AFS-Q1 TINA-TI Startup Transient Model

SNVMC09.TSC (188 KB) - TINA-TI Spice Model
Modelo de simulación

LM61460AFS-Q1 TINA-TI Steady State Transient Model

SNVMC10.TSC (177 KB) - TINA-TI Spice Model
Herramienta de cálculo

SNVR479 LM61460 Design Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
LM61440 Convertidor reductor síncrono de 3 V a 36 V, 4 A y bajo ruido LM61460 Convertidor reductor síncrono de 3 V a 36 V, 6 A y bajo EMI LM61460-Q1 Convertidor reductor síncrono de 3 V a 36 V, 6 A y bajo ruido para automoción
Disposición de la PCB

LM61460 EVM Design Files

SNVR478.ZIP (5000 KB)
Diseños de referencia

PMP30930 — Diseño de referencia de reductor optimizado para EMI

Este diseño de referencia consta de tres placas separables optimizadas para EMI baja.

Las tres placas están etiquetadas

  • PMP30930 Parte A (con LM63635‑Q1, encapsulado PW)
  • PMP30930 Parte B (con LM63635‑Q1, encapsulado DR)
  • PMP30930 Parte C (con LM61460‑Q1)
Test report: PDF
Diseños de referencia

PMP22334 — Diseño de referencia de pantalla de automóvil de alta eficiencia y bajo ruido de 5 V/3,3 V/1,8 V/1,1

This reference design is for an automotive display application with a customized form factor. The design demonstrates the excellent thermal performance of LM61460-Q1 with its HotRod™ QFN package as well as the low EMI aided by its spread spectrum feature. It generates four (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP21771 — Potencia de 30 W para el diseño de referencia de puerto de carga doble USB tipo C® para automóviles

This reference design uses an LM61460-Q1 synchronous buck regulator that provides current of 6 A to two TPS2557-Q1 load switch channels to provide 30 W of total power to dual USB Type-C® charge ports. This is designed for high-power efficiency and thermal performance and comes in a small size. The (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN-HR (RJR) 14 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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