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LM5045

ACTIVO

Controlador PWM de puente completo con controladores MOSFET integrados

Detalles del producto

Vin (max) (V) 14 Operating temperature range (°C) -40 to 125 Control mode Current Topology Full bridge, Half bridge, Push pull Rating Catalog Features Current limiting, High-voltage startup, Integrated gate drivers, Multi-topology, SR logic, Synchronization pin Duty cycle (max) (%) 50
Vin (max) (V) 14 Operating temperature range (°C) -40 to 125 Control mode Current Topology Full bridge, Half bridge, Push pull Rating Catalog Features Current limiting, High-voltage startup, Integrated gate drivers, Multi-topology, SR logic, Synchronization pin Duty cycle (max) (%) 50
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4 WQFN (RSG) 28 25 mm² 5 x 5
  • Highest Integration Controller for Small Form
    Factor, High-Density Power Converters
  • High-Voltage Start-Up Regulator
  • Intelligent Sync Rectifier Start-Up Allows Linear
    Turnon Into Prebiased Loads
  • Synchronous Rectifiers Disabled in UVLO mode and
    Hiccup Mode
  • Two Independent, Programmable Synchronous Rectifier
    Dead-Time Adjustments
  • Four High-Current 2-A Bridge Gate Drivers
  • Wide-Bandwidth Optocoupler Interface
  • Configurable for Either Current Mode or Voltage
    Mode Control
  • Dual-Mode Overcurrent Protection
  • Resistor Programmed 2-MHz Oscillator
  • Programmable Line UVLO and OVP
  • Highest Integration Controller for Small Form
    Factor, High-Density Power Converters
  • High-Voltage Start-Up Regulator
  • Intelligent Sync Rectifier Start-Up Allows Linear
    Turnon Into Prebiased Loads
  • Synchronous Rectifiers Disabled in UVLO mode and
    Hiccup Mode
  • Two Independent, Programmable Synchronous Rectifier
    Dead-Time Adjustments
  • Four High-Current 2-A Bridge Gate Drivers
  • Wide-Bandwidth Optocoupler Interface
  • Configurable for Either Current Mode or Voltage
    Mode Control
  • Dual-Mode Overcurrent Protection
  • Resistor Programmed 2-MHz Oscillator
  • Programmable Line UVLO and OVP

The LM5045 PWM controller contains all of the features necessary to implement full-bridge topology power converters using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high-side and low-side gate drivers for the four external bridge MOSFETs plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the leading and trailing edge dead-time between the main and synchronous rectifier control signals. Intelligent start-up of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.

The LM5045 PWM controller contains all of the features necessary to implement full-bridge topology power converters using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high-side and low-side gate drivers for the four external bridge MOSFETs plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the leading and trailing edge dead-time between the main and synchronous rectifier control signals. Intelligent start-up of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5045 Full-Bridge PWM Controller With Integrated MOSFET Drivers datasheet (Rev. H) PDF | HTML 28 ene 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
User guide AN-2111 LM5045 Evaluation Board (Rev. C) 06 may 2013
Application note AN-2213 LM5045 Based 240W Power Converter Using Full-Wave (Rev. A) 06 may 2013
Application note Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) 06 may 2013

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

LM5045EVAL — Placa de evaluación para LM5045

The LM5045 evaluation board is designed to provide the design engineer with a fully functional power converter based on the full-bridge topology to evaluate the LM5045 PWM controller. The evaluation board is provided in an industry standard quarter brick footprint.
Modelo de simulación

LM5045 PSPICE Model

SNVM006.ZIP (350 KB) - PSpice Model
Herramienta de cálculo

SLUC501 LM5045 Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM5045 Controlador PWM de puente completo con controladores MOSFET integrados
Diseños de referencia

PMP31092 — Diseño de referencia de puente completo de 140 W de perfil bajo

Esta fuente de alimentación es un diseño de referencia de puente completo de 140 W para aplicaciones que requieren alta densidad y baja altura de los componentes gracias al transformador planar. El diseño se basa en una topología de puente completo de conmutación dura que utiliza diodos Schottky (...)
Test report: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 28 Ultra Librarian
WQFN (RSG) 28 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.

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