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Convertidor síncrono de 65 V, 8 A y baja EMI optimizado para aplicaciones de seguridad para automoci

Detalles del producto

Rating Automotive Topology Buck Iout (max) (A) 8 Vin (max) (V) 65 Vin (min) (V) 3.5 Vout (max) (V) 60 Vout (min) (V) 0.8 Features Adjustable soft start, Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Compliant Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 2.1 Duty cycle (max) (%) 98 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 8 Vin (max) (V) 65 Vin (min) (V) 3.5 Vout (max) (V) 60 Vout (min) (V) 0.8 Features Adjustable soft start, Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Compliant Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 2.1 Duty cycle (max) (%) 98 Type Converter
WQFN-FCRLF (RZY) 26 20.25 mm² 4.5 x 4.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation available to aid ISO 26262 system design planned
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL C
    • Analog built-in-self-test at start-up
    • Redundant and fast (0.35µs) VOUT monitor
    • Excellent pin FMEA and pin spacing
  • Wide input voltage range: 3V to 70V
  • 1% accurate, VOUT from 0.8V to 60V
  • Optimized for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-configurable dual-random spread spectrum and slew-rate control reduce peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Low minimum on time: 36ns (typical)
    • Enables 36V to 3.3V conversion at 2.1MHz
  • High-efficiency power conversion
    • > 95% peak efficiency, 12VIN to 5VOUT, 400kHz
    • No-load input current: 3.5µA
  • High power density
    • Internal compensation, OCP, and TSD
    • 4.5mm × 4.5mm eQFN-26 with wettable flanks
    • ΘJA = 18°C/W (EVM)
  • VIN to PGND pin clearance: 1.1mm
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation available to aid ISO 26262 system design planned
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL C
    • Analog built-in-self-test at start-up
    • Redundant and fast (0.35µs) VOUT monitor
    • Excellent pin FMEA and pin spacing
  • Wide input voltage range: 3V to 70V
  • 1% accurate, VOUT from 0.8V to 60V
  • Optimized for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-configurable dual-random spread spectrum and slew-rate control reduce peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Low minimum on time: 36ns (typical)
    • Enables 36V to 3.3V conversion at 2.1MHz
  • High-efficiency power conversion
    • > 95% peak efficiency, 12VIN to 5VOUT, 400kHz
    • No-load input current: 3.5µA
  • High power density
    • Internal compensation, OCP, and TSD
    • 4.5mm × 4.5mm eQFN-26 with wettable flanks
    • ΘJA = 18°C/W (EVM)
  • VIN to PGND pin clearance: 1.1mm

The LM686x0-Q1 are a family of stackable, automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 70V simplifying input surge protection design.

The low EMI operation is enabled with minimized loop inductance, internal bypass capacitors, pin-selectable SW node slew-rate control and dual-random spread spectrum (DRSS).

The current-mode control architecture with 36ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation. Up to two converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for supporting output current up to 16A.

The LM686x0-Q1 buck converters are specifically intended for functional safety relevant applications. An array of safety features including ABIST at start-up, redundant and fast VOUT monitor, feedback path failure detection, redundant temperature sensor, thermal shutdown, and current limit significantly reduces residual failure-in-time (FIT).

The LM686x0-Q1 are a family of stackable, automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 70V simplifying input surge protection design.

The low EMI operation is enabled with minimized loop inductance, internal bypass capacitors, pin-selectable SW node slew-rate control and dual-random spread spectrum (DRSS).

The current-mode control architecture with 36ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation. Up to two converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for supporting output current up to 16A.

The LM686x0-Q1 buck converters are specifically intended for functional safety relevant applications. An array of safety features including ABIST at start-up, redundant and fast VOUT monitor, feedback path failure detection, redundant temperature sensor, thermal shutdown, and current limit significantly reduces residual failure-in-time (FIT).

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* Data sheet LM686x0-Q1 70V, 8A/6A/4A, Automotive Buck Converters Optimized for Safety-Relevant Applications datasheet PDF | HTML 24 oct 2024

Diseño y desarrollo

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Placa de evaluación

LM65680-Q1EVM — Módulo de evaluación LM65680-Q1

El módulo de evaluación (EVM) LM65680-Q1 es un regulador buck CC/CC síncrono que emplea rectificación síncrona para lograr una alta eficiencia de conversión en un tamaño reducido. El EVM funciona en un amplio rango de tensión de entrada de 6 V a 70 V, lo que ofrece una tensión nominal de gran (...)
Guía del usuario: PDF | HTML
Controlador o biblioteca

LM68680-Q1-FS Functional safety documentation and full datasheet for LM68680-Q1

Functional safety documentation and full datasheet for LM68680-Q1
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
LM68680-Q1 Convertidor síncrono de 65 V, 8 A y baja EMI optimizado para aplicaciones de seguridad para automoci
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN-FCRLF (RZY) 26 Ultra Librarian

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  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
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  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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