Inicio Administración de potencia Convertidores de CA/CC y CC/CC (FET integrado)
Inicio
Administración de potencia
Convertidores de CA/CC y CC/CC (FET integrado)
NUEVO

LMR71915

PRESENTACIÓN PRELIMINAR

Convertidor buck de 120 V y 1.5 A de tiempo de conexión constante

Haga su pedido ahora
Hoja de datos

LMR71915

PRESENTACIÓN PRELIMINAR
Hoja de datos Haga su pedido ahora

Detalles del producto

Rating Catalog Topology Buck Switch current limit (typ) (A) 0.5 Iout (max) (A) 0.5 Vin (max) (V) 120 Vin (min) (V) 6 Vout (max) (V) 90 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 5 Duty cycle (max) (%) 99 Type Converter
Rating Catalog Topology Buck Switch current limit (typ) (A) 0.5 Iout (max) (A) 0.5 Vin (max) (V) 120 Vin (min) (V) 6 Vout (max) (V) 90 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 5 Duty cycle (max) (%) 99 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Designed for reliability in rugged applications
    • Wide input voltage range of 6V to 115V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • Low minimum on time of 30ns and minimum off time of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • Auto mode with low quiescent current (5µA typical)
    • FPWM for Fly-Buck converter capability
    • 1µA shutdown quiescent current
    • Pin-to-pin compatible with LM5169, LM5168, LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.7Ω NFET buck switch
    • Integrated 0.35Ω NFET synchronous rectifier
    • 1V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • SOIC PowerPAD™-8 integrated circuit package
  • Designed for reliability in rugged applications
    • Wide input voltage range of 6V to 115V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • Low minimum on time of 30ns and minimum off time of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • Auto mode with low quiescent current (5µA typical)
    • FPWM for Fly-Buck converter capability
    • 1µA shutdown quiescent current
    • Pin-to-pin compatible with LM5169, LM5168, LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.7Ω NFET buck switch
    • Integrated 0.35Ω NFET synchronous rectifier
    • 1V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • SOIC PowerPAD™-8 integrated circuit package

The LMR71915 and LMR71907 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 30ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LMR719xx operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LMR71915 delivers up to 1.5A of output current and the LMR71907 delivers up to 0.75A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LMR719xx is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated Fly-Buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.

The LMR71915 and LMR71907 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 30ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LMR719xx operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LMR71915 delivers up to 1.5A of output current and the LMR71907 delivers up to 0.75A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LMR719xx is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated Fly-Buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.
filter Buscar otro/a Convertidores de CA/CC y CC/CC (FET integrado)
Descargar Ver vídeo con transcripción Video

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 2
Tipo Título Fecha
* Data sheet LMR719xx 1.5A, 0.75A, 115V, Step-Down Converter With Fly-Buck Converter Capability datasheet PDF | HTML 16 jul 2025
Certificate LMR71915EVM-FLBK EU Declaration of Conformity (DoC) 23 jun 2025

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

LMR71915EVM-FLBK — Módulo de evaluación de convertidor Fly-Buck™ LMR71915EVM-FLBK

El módulo LMR71915EVM-FLBK es un convertidor Fly-Buck™ que utiliza el LMR71915FDDAR para producir una salida regulada de 12 V capaz de suministrar una carga de 625 mA en el lado principal del transformador con una frecuencia de conmutación de 500 kHz. En el lado secundario del transformador, hay (...)

Guía del usuario: PDF | HTML
No disponible en TI.com
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HSOIC (DDA) 8 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

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

Ver todos los temas del foro en inglés

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. ​​​​​​​​​​​​​​

Videos