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LM25143

ACTIVO

Controlador CC/CC reductor síncrono, apilable, de 3.5 V a 42 V y doble salida con IQ ultrabaja

Detalles del producto

Vin (min) (V) 3.5 Vin (max) (V) 47 Iout (max) (A) 100 Operating temperature range (°C) -40 to 150 Control mode current mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 36 Iq (typ) (A) 0.0000165 Duty cycle (max) (%) 99 Number of phases 2
Vin (min) (V) 3.5 Vin (max) (V) 47 Iout (max) (A) 100 Operating temperature range (°C) -40 to 150 Control mode current mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 36 Iq (typ) (A) 0.0000165 Duty cycle (max) (%) 99 Number of phases 2
VQFN (RHA) 40 36 mm² 6 x 6
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 3.5 V to 42 V
    • 1% accurate, fixed 3.3-V, 5-V, or adjustable outputs from 0.6 V to 36 V
    • 150°C maximum junction temperature
    • 4-µA typical shutdown mode current
    • 15-µA typical no-load standby current
  • Two interleaved synchronous buck channels
    • Dual channel or single-output multiphase
    • 65-ns tON(min) for high VIN/VOUT ratio
    • 60-ns tOFF(min) for low dropout
  • Inherent protection features for robust design
    • Shunt or inductor DCR current sensing
    • Hiccup mode overcurrent protection
    • Independent ENABLE and PGOOD functions
    • Adjustable output voltage soft start
    • VCC, VDDA, and gate-drive UVLO protection
    • Thermal shutdown protection with hysteresis
  • Optimized for CISPR 11 and CISPR 32 class B conducted and radiatedEMI requirements
    • Slew-rate controlled adaptive gate drivers
    • Spread spectrum reduces peak emissions
  • 100-kHz to 2.2-MHz switching frequency
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM modes
  • 6-mm × 6-mm VQFN-40 package
  • Create a custom design using the LM25143 with WEBENCH Power Designer
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 3.5 V to 42 V
    • 1% accurate, fixed 3.3-V, 5-V, or adjustable outputs from 0.6 V to 36 V
    • 150°C maximum junction temperature
    • 4-µA typical shutdown mode current
    • 15-µA typical no-load standby current
  • Two interleaved synchronous buck channels
    • Dual channel or single-output multiphase
    • 65-ns tON(min) for high VIN/VOUT ratio
    • 60-ns tOFF(min) for low dropout
  • Inherent protection features for robust design
    • Shunt or inductor DCR current sensing
    • Hiccup mode overcurrent protection
    • Independent ENABLE and PGOOD functions
    • Adjustable output voltage soft start
    • VCC, VDDA, and gate-drive UVLO protection
    • Thermal shutdown protection with hysteresis
  • Optimized for CISPR 11 and CISPR 32 class B conducted and radiatedEMI requirements
    • Slew-rate controlled adaptive gate drivers
    • Spread spectrum reduces peak emissions
  • 100-kHz to 2.2-MHz switching frequency
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM modes
  • 6-mm × 6-mm VQFN-40 package
  • Create a custom design using the LM25143 with WEBENCH Power Designer

The LM25143 is a 42-V DC/DC synchronous buck controller for high-current single or dual outputs. Deriving from a family of wide-VIN range controllers, the device uses an interleaved, stackable, peak current-mode control architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for higher output current. A high-side switch minimum on time of 65 ns provides large step-down ratios, enabling the direct conversion from 12-V or 24-V inputs to low-voltage rails for reduced system complexity and cost. The LM25143 continues to operate during input voltage dips as low as 3.5 V, at nearly 100% duty cycle if needed.

The 15-µA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered systems. Power the LM25143 from the output of the switching regulator or another available source for even lower input quiescent current and power loss.

The LM25143 is a 42-V DC/DC synchronous buck controller for high-current single or dual outputs. Deriving from a family of wide-VIN range controllers, the device uses an interleaved, stackable, peak current-mode control architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for higher output current. A high-side switch minimum on time of 65 ns provides large step-down ratios, enabling the direct conversion from 12-V or 24-V inputs to low-voltage rails for reduced system complexity and cost. The LM25143 continues to operate during input voltage dips as low as 3.5 V, at nearly 100% duty cycle if needed.

The 15-µA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered systems. Power the LM25143 from the output of the switching regulator or another available source for even lower input quiescent current and power loss.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM25143 3.5-V to 42-V Dual Synchronous Buck DC/DC Controller With Ultra-Low IQ datasheet PDF | HTML 18 mar 2022
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 16 ago 2023
Functional safety information LM25143 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 17 feb 2022
E-book An Engineer’s Guide to Low EMI in DC/DC Regulators 21 abr 2021
Application note LM5143-Q1 4-phase Buck Regulator Design (Rev. A) PDF | HTML 28 abr 2020

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

LM5143-Q1EVM-2100 — Módulo de evaluación de controlador reductor síncrono de doble canal para automoción

The LM5143-Q1-EVM2100 high density evaluation module (EVM) is designed to showcase the performance of the LM5143-Q1 high performance, dual-channel, automotive synchronous buck DC/DC buck controller. It operates over a wide input voltage range of 3.5 V to 36 V to deliver fixed 5-V and 3.3-V outputs (...)
Guía del usuario: PDF
Herramienta de cálculo

LM5143DESIGN-CALC LM5143-Q1 Controller Quickstart Design Tool

This stand-alone tool facilitates and assists with the design of a DC/DC buck regulator based on the LM5143-Q1 synchronous buck DC/DC controller with low IQ. The user can expeditiously arrive at an optimized design to meet the application requirements.

Productos y hardware compatibles

Productos y hardware compatibles

Productos
AC/DC & DC/DC controllers (external FET)
LM25143 Controlador CC/CC reductor síncrono, apilable, de 3.5 V a 42 V y doble salida con IQ ultrabaja LM25143-Q1 Controlador CC-CC reductor síncrono apilable de 3.5 V a 42 V de baja IQ y doble salida para automoci LM5143 Controlador CC/CC reductor síncrono, apilable, de 3.5 V a 65 V y doble salida con IQ ultrabaja LM5143-Q1 Controlador DC/DC reductor síncrono doble bifásico de 3.5 V a 65 V y baja IQ LM5143A-Q1 Controlador CC-CC reductor síncrono apilable de 3.5 V a 65 V de baja IQ y doble salida para automoci
Desarrollo de hardware
Placa de evaluación
LM5143-Q1EVM-2100 Módulo de evaluación de controlador reductor síncrono de doble canal para automoción
Software
Herramienta de cálculo
LM5143DESIGN-CALC Herramienta de diseño de inicio rápido de controladores LM5143-Q1, LM5143A-Q1, LM5143, LM25143-Q1 y
Diseños de referencia

PMP31202 — Diseño de referencia de un convertidor reductor tetrafásico de 700 W

Este diseño de referencia es un convertidor reductor de 700 W que utiliza el dispositivo LM5143A-Q1. Gracias a los reducidos tiempos muertos, los controladores ultrarobustos y la posibilidad de ajustar individualmente los márgenes ascendentes y descendentes, la eficiencia resultante es del 98 %. (...)
Test report: PDF
Paquete Pasadores Descargar
VQFN (RHA) 40 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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