Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)

LM5576

ACTIVO

Regulador reductor con Vin amplia de 6 V a 75 V y 3 A

Detalles del producto

Iout (max) (A) 3 Vin (min) (V) 6 Vin (max) (V) 75 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001
Iout (max) (A) 3 Vin (min) (V) 6 Vin (max) (V) 75 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • LM5576-Q1 is an Automotive Grade Product that
    is AEC-Q100 grade 1 Qualified (−40°C
    to + 125°C Operating Junction Temperature) and
    AEC-Q100 Grade 0 Qualified (−40°C to + 150°C
    + 150°COperating Junction Temperature)
  • Integrated 75 V, 170 mΩ N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% (Q1) and 1.65% (Q0) Feedback Reference
    Accuracy
  • Operating Frequency Adjustable Between 50 kHz
    and 500 kHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • HTSSOP-20EP (Exposed Pad)
  • LM5576-Q1 is an Automotive Grade Product that
    is AEC-Q100 grade 1 Qualified (−40°C
    to + 125°C Operating Junction Temperature) and
    AEC-Q100 Grade 0 Qualified (−40°C to + 150°C
    + 150°COperating Junction Temperature)
  • Integrated 75 V, 170 mΩ N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% (Q1) and 1.65% (Q0) Feedback Reference
    Accuracy
  • Operating Frequency Adjustable Between 50 kHz
    and 500 kHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • HTSSOP-20EP (Exposed Pad)

The LM5576 is an easy to use SIMPLE SWITCHER buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75 V, the LM5576 delivers 3 A of continuous output current with an integrated 170 mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH On-Line design tools.

The LM5576 is an easy to use SIMPLE SWITCHER buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75 V, the LM5576 delivers 3 A of continuous output current with an integrated 170 mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH On-Line design tools.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5576/-Q1 SIMPLE SWITCHER® 75 V, 3 A Step-Down Switching Regulator datasheet (Rev. J) PDF | HTML 03 mar 2014
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 mar 2024
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 03 jul 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12 sep 2014
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 06 may 2013
EVM User's guide AN-1570 LM5576 Evaluation Board (Rev. B) 26 abr 2013
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 abr 2013
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23 abr 2013
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23 abr 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 abr 2013
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 23 abr 2013
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23 abr 2013
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23 abr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 abr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 abr 2013
Application note Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576 and LM25576 (Rev. B) 23 abr 2013
Application note Understanding and Applying Current-Mode Control Theory 19 ago 2007
Application note Input and Output Capacitor Selection 19 sep 2005
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 may 2004

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

LM5576EVAL — Módulo de evaluación de regulador reductor de conmutación de 75 V y 3 A

The LM5576 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5576 regulator IC. The evaluation board provides a 5V output with a 3A current capability. The ultra-wide input voltage ranges from (...)

Guía del usuario: PDF
Modelo de simulación

LM5576 Non-Inverting and Inverting PSpice Transient Model (Rev. C)

SNVM292C.ZIP (1168 KB) - PSpice Model
Modelo de simulación

LM5576 TINA-TI Transient Inverting Buck Boost Startup Reference Design

SNVMBP7.TSC (677 KB) - TINA-TI Reference Design
Modelo de simulación

LM5576 TINA-TI Transient Line Transient Reference Design

SNVMBP5.TSC (565 KB) - TINA-TI Reference Design
Modelo de simulación

LM5576 TINA-TI Transient Load Transient Reference Design (Rev. A)

SNVM548A.TSC (566 KB) - TINA-TI Reference Design
Modelo de simulación

LM5576 TINA-TI Transient Spice Model (Rev. A)

SNVM549A.ZIP (10 KB) - TINA-TI Spice Model
Modelo de simulación

LM5576 TINA-TI Transient Start-up Reference Design (Rev. A)

SNVM547A.TSC (661 KB) - TINA-TI Reference Design
Modelo de simulación

LM5576 TINA-TI Transient Steady State Reference Design

SNVMBP6.TSC (647 KB) - TINA-TI Reference Design
Herramienta de cálculo

LM2557X-557XQUICK-CALC — Calculadora de componentes con inicio rápido SIMPLE SWITCHER LM(2)557x

Herramienta de cálculo

SIMPLESWITCHER-COMPONENT-CALC — Calculadora de componentes de inicio rápido SIMPLE SWITCHER LM(2)557x descargable

Paquete Pasadores Descargar
HTSSOP (PWP) 20 Ver opciones

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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