Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)
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Gestión de la energía
Convertidores de CA/CC y CC/CC (FET integrado)
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LM63440-Q1

ACTIVO

Convertidor reductor síncrono automotriz de 3 V a 36 V y 4 A de baja EMI con frecuencia de conmutaci

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LM63440-Q1

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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) 4 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) 34.2 Iq (typ) (µA) 7 Duty cycle (max) (%) 87
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) 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) 34.2 Iq (typ) (µA) 7 Duty cycle (max) (%) 87
VQFN-FCRLF (RYF) 22 14 mm² 4 x 3.5
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC converter
    • Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
    • 4A and 6A options available
    • 1% accurate adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Frequency adjustable from 200kHz to 2.2MHz using the RT pin or a SYNC signal
  • Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
  • Designed for low EMI requirements
    • Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
    • Spread spectrum frequency modulation
    • Selectable FPWM or PFM mode at light loads
  • High efficiency across the full load range
    • 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
    • 7µA typical at 3.3VOUT no-load input current
    • 0.6µA typical shutdown quiescent current
    • 0.6V typical dropout at full load
    • External bias option for improved efficiency
  • Create a custom regulator design using the LM634x0-Q1 with WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC converter
    • Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
    • 4A and 6A options available
    • 1% accurate adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Frequency adjustable from 200kHz to 2.2MHz using the RT pin or a SYNC signal
  • Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
  • Designed for low EMI requirements
    • Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
    • Spread spectrum frequency modulation
    • Selectable FPWM or PFM mode at light loads
  • High efficiency across the full load range
    • 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
    • 7µA typical at 3.3VOUT no-load input current
    • 0.6µA typical shutdown quiescent current
    • 0.6V typical dropout at full load
    • External bias option for improved efficiency
  • Create a custom regulator design using the LM634x0-Q1 with WEBENCH Power Designer

The LM634x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM634x0-Q1 incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency can be set between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the application requirements.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.

The LM634x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM634x0-Q1 incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency can be set between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the application requirements.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.
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Documentación técnica

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* Data sheet LM634x0-Q1 3V to 36V, 4A and 6A, Automotive, Synchronous Buck DC/DC Converters With Adjustable Switching Frequency, Optimized for Reliability and Low EMI datasheet (Rev. C) PDF | HTML 23 ago 2024
Functional safety information LM634X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 04 jun 2024
User guide LM63460-Q1 and LM64460-Q1 EVM User's Guide PDF | HTML 16 dic 2021

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

LM63460EVM — Módulo de evaluación LM63460-Q1 de convertidor reductor síncrono de 5.5 V a 36 V, 6 A y bajo EMI par

El módulo de evaluación (EVM) de alta densidad LM63460EVM-2MHZ está diseñado para mostrar el rendimiento del controlador LM63460-Q1 reductor CC/CC síncrono de alto rendimiento para automoción. El EVM funciona en un amplio rango de tensión de entrada de 5.5 V a 36 V para brindar una salida fija de (...)

Guía del usuario: PDF | HTML
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Herramienta de cálculo

LM63460-LM64460DESIGN-CALC — Herramienta de diseño de inicio rápido de LM63440-Q1, LM63460-Q1, LM64440-Q1 y LM64460-Q1

Le damos la bienvenida a la herramienta de diseño de inicio rápido de LM63440-Q1, LM63460-Q1, LM64440-Q1 y LM64460-Q1. Esta herramienta independiente facilita y asiste al ingeniero de fuentes de alimentación con un regulador buck de CC/CC a partir de esta familia de módulos de potencia buck (...)
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Disposición de la PCB

LM63460-Q1, LM64460-Q1 EVM PCB Layout Files

SNVR515.ZIP (5089 KB)
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VQFN-FCRLF (RYF) 22 Ultra Librarian
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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

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