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

LMR14050

ACTIVO

Convertidor reductor SIMPLE SWITCHER® de 40 V, 5 A, 2,2 MHz con IQ de 40 μA

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LMR51450 ACTIVO Convertidor reductor síncrono de 36 V y 5 A Smaller solution size, higher efficiency and lower EMI.

LMR14050

ACTIVO
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Detalles del producto

Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 4 V to 40 V Input Range
  • 5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package
  • 4 V to 40 V Input Range
  • 5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package

The LMR14050 is a 40 V, 5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14050 is a 40 V, 5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.
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LM61460 ACTIVO Convertidor reductor síncrono de 3 V a 36 V, 6 A y bajo EMI Next-generation 36-V, 6-A converter.

Documentación técnica

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Tipo Título Fecha
* Data sheet LMR14050 SIMPLE SWITCHER® 40 V 5 A, 2.2 MHz Step-Down Converter with 40 µA IQ datasheet (Rev. A) PDF | HTML 17 mar 2015
Application note Simple Solution for EMI Filter Stability Issue in DC/DC Converters (Rev. A) 25 abr 2019
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 29 mar 2019
Application note How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 27 abr 2018
Technical article There are more ways than you think to reduce conducted EMI PDF | HTML 17 abr 2018
Application note Design Feedforward Capacitor for LMR14020 20 dic 2017
Application note How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 20 sep 2017
Application note Extending Buck Regulator to Positive Buck-Boost Configuration 02 sep 2017
EVM User's guide LMR14050EVM User's Guide 30 ene 2015
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 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
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

LMR14050SEVM — Módulo de evaluación del convertidor reductor LMR14050S

The LMR14050SEVM is a fully assembled and tested circuit for evaluating the LMR14050S Step-Down Converter. The LMR14050SEVM operates from 7V to 36V input (12V nominal) and provides a 5.0V or 3.3V output at 5A. The board also has jumper connectors to enable or disable the converter operation, change (...)

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LMR14050S PSPICE Transient Model

SNVM708.ZIP (62 KB) - PSpice Model
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Modelo de simulación

LMR14050S Unencrypted PSpice Transient Model

SNVM923.ZIP (6 KB) - PSpice Model
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Diseños de referencia

TIDA-01458 — Diseño de referencia de la fuente de alimentación de ±2.5 a ±12 VOUT y 3 A, con caída fija de bajo r

This reference design allows a digitally programmable power supply to power an ultrasound transmit circuit for continuous wave (CW) mode from a 24-V bus. There are two outputs adjustable from ±2.5 to ±12 V under user software control. These outputs can provide up to 2 A with very low (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP10743 — Diseño de referencia de SWITCHER SIMPLE de 7 V a 40 V de entrada amplia y 3 salidas con LMR14050 y L

The reference design shows the wide input voltage capability, simple layout, and small solution size of the LMR14050 SIMPLE SWITCHER® Buck Converter and the LMZ20502 Nano Module. The LMR14050 provides a 5V output rail which feeds into two LMZ20502 Nano Modules.  The modules provide a 3.3V (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10680 — Diseño de referencia de convertidor no síncrono de 4,5 V a 24 V, entrada ancha, salida negativa de 5

The PMP10680 reference design is a non-sync buck converter with buck-boost configuration. The PMP10680 accepts an input voltage of 4.5 to 24Vin and provides a negative 5V output capable of supplying continuous 2A of current to the load. With negative output and the self-positive input, (...)
Test report: PDF
Esquema: PDF
Paquete Pasadores Descargar
HSOIC (DDA) 8 Ver opciones
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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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