Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)

LM25148-Q1

ACTIVO

Controlador automotriz CC/CC reductor síncrono de 42 V con IQ ultrabaja

Detalles del producto

Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Controller Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 36 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 9.5 Duty cycle (max) (%) 99 Number of phases 2 TI functional safety category Functional Safety-Capable
Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Controller Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 36 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 9.5 Duty cycle (max) (%) 99 Number of phases 2 TI functional safety category Functional Safety-Capable
VQFN (RGY) 24 19.25 mm² 5.5 x 3.5
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Integrated EMI mitigation
    • Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands
    • Optimized for CISPR 25 Class 5 requirements
  • 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, 12 V, or adjustable output from 0.8 V to 36 V
    • 150°C maximum junction temperature
    • Lossless DCR or shunt current sensing
    • Shutdown mode current of 2.3 µA
    • No-load sleep current of 9.5 µA
    • Internal soft-start ramp of 3 ms
    • Stackable up to two phases
    • Internal bootstrap diode
  • Switching frequency from 100 kHz to 2.2 MHz
    • SYNC in and SYNC out capability
    • Selectable PFM or FPWM modes
  • Inherent protection features for robust design
    • Internal hiccup mode overcurrent protection
    • ENABLE and PGOOD functions
    • VCC, VDDA, and gate-drive UVLO protection
    • Internal or external loop compensation
    • Thermal shutdown protection with hysteresis
  • Create a custom design using the LM25148-Q1 with WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Integrated EMI mitigation
    • Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands
    • Optimized for CISPR 25 Class 5 requirements
  • 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, 12 V, or adjustable output from 0.8 V to 36 V
    • 150°C maximum junction temperature
    • Lossless DCR or shunt current sensing
    • Shutdown mode current of 2.3 µA
    • No-load sleep current of 9.5 µA
    • Internal soft-start ramp of 3 ms
    • Stackable up to two phases
    • Internal bootstrap diode
  • Switching frequency from 100 kHz to 2.2 MHz
    • SYNC in and SYNC out capability
    • Selectable PFM or FPWM modes
  • Inherent protection features for robust design
    • Internal hiccup mode overcurrent protection
    • ENABLE and PGOOD functions
    • VCC, VDDA, and gate-drive UVLO protection
    • Internal or external loop compensation
    • Thermal shutdown protection with hysteresis
  • Create a custom design using the LM25148-Q1 with WEBENCH Power Designer

The LM25148-Q1 is a 42-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM25148-Q1 can be set up in idual-phase mode (paralleled output) with accurate current sharing for high-current applications. It can operate at input voltages as low as 3.5 V, at nearly 100% duty cycle if needed.

The LM25148-Q1 has a unique EMI reduction feature known as dual random spread spectrum (DRSS). Combining low-frequency triangular and high-frequency random modulations mitigates EMI disturbances across lower and higher frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.

Additional features of the LM25148-Q1 include 150°C maximum junction temperature operation, user-selectable diode emulation for lower current consumption at light-load conditions, open-drain power-good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 3-ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM25148-Q1 controller comes in a 3.5-mm × 5.5-mm thermally enhanced, 24-pin VQFN package with wettable flank pins to facilitate optical inspection during manufacturing.

The LM25148-Q1 is a 42-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM25148-Q1 can be set up in idual-phase mode (paralleled output) with accurate current sharing for high-current applications. It can operate at input voltages as low as 3.5 V, at nearly 100% duty cycle if needed.

The LM25148-Q1 has a unique EMI reduction feature known as dual random spread spectrum (DRSS). Combining low-frequency triangular and high-frequency random modulations mitigates EMI disturbances across lower and higher frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.

Additional features of the LM25148-Q1 include 150°C maximum junction temperature operation, user-selectable diode emulation for lower current consumption at light-load conditions, open-drain power-good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 3-ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM25148-Q1 controller comes in a 3.5-mm × 5.5-mm thermally enhanced, 24-pin VQFN package with wettable flank pins to facilitate optical inspection during manufacturing.

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Documentación técnica

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* Data sheet LM25148-Q1 42-V, Automotive, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum datasheet (Rev. A) PDF | HTML 13 feb 2023
Certificate LM25148B-Q1EVM2100 EU Declaration of Conformity (DoC) 03 oct 2024
Test report Power Delivery Reference Design for AMD Versal™ AI Edge Series PDF | HTML 25 mar 2024
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 16 ago 2023
User guide LM25149-Q1 EVM User's Guide (Rev. A) PDF | HTML 29 abr 2022
Functional safety information LM25148-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 28 sep 2021

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

LM25149-Q1EVM-2100 — Módulo de evaluación de controlador CC/CC reductor síncrono de 5.5 V a 36 V y IQ baja LM25149-Q1

El módulo de evaluación (EVM) de alta densidad LM25149‑Q1EVM‑2100 está diseñado para mostrar el rendimiento del controlador reductor de CC/CC síncrono de alto rendimiento para automoción LM25149‑Q1. El EVM funciona en un amplio rango de tensión de entrada de 5.5 V a 36 V para brindar una salida (...)
Guía del usuario: PDF | HTML
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
Placa de evaluación

LM5149-Q1EVM-400 — Módulo de evaluación LM5149-Q1, 72 V, baja IQ, controlador CC/CC síncrono reductor con filtro EMI ac

El módulo de evaluación (EVM) de alta densidad LM5149‑Q1EVM‑400 está diseñado para mostrar el rendimiento del controlador reductor de CC/CC síncrono de alto rendimiento para automoción LM5149‑Q1. El EVM funciona en un amplio rango de tensión de entrada de 15 V a 72 V para brindar una salida fija de (...)

Guía del usuario: PDF | HTML
Herramienta de cálculo

LM5148-LM25148DESIGN-CALC LM5148/-Q1 and LM25148/-Q1 controller quickstart design tool

Welcome to the quickstart design tool for the LM5148, LM5148-Q1, LM25148 and LM25148-Q1. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on the above controller family. As such, the user can expeditiously arrive at an (...)
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM5148 Controlador reductor síncrono de modo de corriente de 3.5 V a 80 V LM5148-Q1 Controlador CC/CC buck síncrono automotriz de 80 V con IQ ultrabaja LM25148 Controlador CC/CC reductor síncrono de 42 V con IQ ultrabaja LM25148-Q1 Controlador automotriz CC/CC reductor síncrono de 42 V con IQ ultrabaja
Desarrollo de hardware
Placa de evaluación
LM5149-Q1EVM-400 Módulo de evaluación LM5149-Q1, 72 V, baja IQ, controlador CC/CC síncrono reductor con filtro EMI ac LM25149-Q1EVM-2100 Módulo de evaluación de controlador CC/CC reductor síncrono de 5.5 V a 36 V y IQ baja LM25149-Q1
Disposición de la PCB

LM25149-Q1EVM-2100 PCB Layout Files

SNVR501.ZIP (1990 KB)
Diseños de referencia

PMP23227 — Diseño de referencia de suministro de energía para AMD Versal™ Edge serie AI

Este diseño de referencia muestra cómo los circuitos integrados reguladores de TI pueden alimentar los carriles de alimentación necesarios para el dispositivo VE2302. Los carriles mínimos de AMD potencian la consolidación de los suministros. Consulte la herramienta Power Design Manager (PDM) de AMD (...)
Test report: PDF
Diseños de referencia

PMP31252 — Diseño de referencia de convertidor reductor síncrono bifásico de 150 W para aplicaciones de sector

Este diseño muestra un convertidor reductor bifásico de baja EMI que se puede utilizar como convertidor de doble salida. Como convertidor bifásico, el circuito puede proporcionar una corriente de salida continua de 22 A con un pico de 30 A en una configuración de 12 V a 5 V.
Test report: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RGY) 24 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.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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