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

LM5116

ACTIVO

Controlador reductor síncrono con modo de corriente de Vin amplia de 6 V-100 V

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LM5146 ACTIVO Controlador DC/DC reductor síncrono de 100 V con amplio rango de ciclo de trabajo Smaller device footprint optimized for EMI requirements.

LM5116

ACTIVO
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Detalles del producto

Vin (min) (V) 6 Vin (max) (V) 100 Iout (max) (A) 20 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Catalog Vout (min) (V) 1.215 Vout (max) (V) 80 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 4600 Duty cycle (max) (%) 98 Number of phases 1
Vin (min) (V) 6 Vin (max) (V) 100 Iout (max) (A) 20 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Catalog Vout (min) (V) 1.215 Vout (max) (V) 80 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 4600 Duty cycle (max) (%) 98 Number of phases 1
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • New, similar products available:
    • LM5148 80-V synchronous buck controller with ultra-low IQ and DRSS
    • LM5149 80-V synchronous buck controller with ultra-low IQ and AEF
  • Emulated peak current mode
  • Wide operating range up to 100 V
  • Low I Q shutdown (< 10 µA)
  • Drives standard or logic level MOSFETs
  • Robust 3.5-A peak gate drive
  • Free-run or synchronous operation to 1 MHz
  • Optional diode emulation mode
  • Programmable output from 1.215 V to 80 V
  • Precision 1.5% voltage reference
  • Programmable current limit
  • Programmable soft start
  • Programmable line undervoltage lockout
  • Automatic switch to external bias supply
  • HTSSOP-20 exposed pad
  • Thermal shutdown
  • Create a custom design using the LM5116 with the WEBENCH Power Designer
  • New, similar products available:
    • LM5148 80-V synchronous buck controller with ultra-low IQ and DRSS
    • LM5149 80-V synchronous buck controller with ultra-low IQ and AEF
  • Emulated peak current mode
  • Wide operating range up to 100 V
  • Low I Q shutdown (< 10 µA)
  • Drives standard or logic level MOSFETs
  • Robust 3.5-A peak gate drive
  • Free-run or synchronous operation to 1 MHz
  • Optional diode emulation mode
  • Programmable output from 1.215 V to 80 V
  • Precision 1.5% voltage reference
  • Programmable current limit
  • Programmable soft start
  • Programmable line undervoltage lockout
  • Automatic switch to external bias supply
  • HTSSOP-20 exposed pad
  • Thermal shutdown
  • Create a custom design using the LM5116 with the WEBENCH Power Designer

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high-voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high-input voltage applications.

The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation, for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current.

Additional features include a high-voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle-by-cycle current limit, and adjustable line undervoltage lockout. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation.

New products (LM5148 and LM5149) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high-voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high-input voltage applications.

The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation, for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current.

Additional features include a high-voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle-by-cycle current limit, and adjustable line undervoltage lockout. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation.

New products (LM5148 and LM5149) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5116 Wide Range Synchronous Buck Controller datasheet (Rev. I) PDF | HTML 03 nov 2023
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 ago 2023
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10 abr 2019
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 03 jul 2018
Selection guide DC/DC Buck Controller Solutions Selection Guide 06 feb 2018
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21 jul 2016
White paper Choosing the Right Fixed Frequency Buck Regulator Control Strategy 02 oct 2015
White paper Choosing the Right Fixed Frequency Buck Regulator Control Strategy (PPT) 02 oct 2015
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 sep 2013
EVM User's guide AN-1596 LM5116 Evaluation Board (Rev. C) 24 abr 2013
EVM User's guide AN-1713 LM5116-12 Evaluation Board (Rev. A) 24 abr 2013
Application note Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) 23 abr 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

LM5116-12EVAL — Placa de evaluación LM5116-12

The LM5116-12 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5116 controller IC. The evaluation board provides a 12V output with a 5A current capability. The operating input voltage ranges (...)

Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

LM5116EVAL — Módulo de evaluación LM5116 de controlador reductor síncrono de Vin amplia

LM5116 Wide Range Synchronous Buck Controller

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

LM5116 PSpice Average Model

SNVM346.ZIP (53 KB) - PSpice Model
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Modelo de simulación

LM5116 PSpice Transient Model (Rev. C)

SNVM345C.ZIP (101 KB) - PSpice Model
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Modelo de simulación

LM5116 TINA-TI Transient Reference Design (Rev. B)

SNVM051B.TSC (159 KB) - TINA-TI Reference Design
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Modelo de simulación

LM5116 TINA-TI Transient Spice Model (Rev. B)

SNVM052B.ZIP (15 KB) - TINA-TI Spice Model
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Modelo de simulación

LM5116 Unencrypted PSpice Average Model

SNVM959.ZIP (2 KB) - PSpice Model
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Modelo de simulación

LM5116 Unencrypted PSpice Transient Model (Rev. A)

SNVM958A.ZIP (6 KB) - PSpice Model
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Herramienta de cálculo

LM5116-5116WG-25116DESIGN-CALC — Calculadora de componentes de inicio rápido LM(2)5116/WG

Welcome to the LM5116, LM5116WG and LM25116 Quickstart Design Tool. This standalone tool assists the power supply engineer with the design of a DC/DC buck regulator based on a synchronous buck controller from this product family. As such, the user can expeditiously arrive at an optimized design to (...)
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Diseños de referencia

PMP11257 — Diseño de referencia de convertidor buck sincrónico de clase 4 PoE (12 V/2 A)

The LM5116 synchronous buck controller provides a high efficiency solution for non-isolated PoE PD applications.  The TPS2378 PoE PD controller performs all necessary functions for an IEEE802.3at compliant Class 4 PoE PD.  This converter is ideal for any PoE application that demands best (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9581_REVB — Diseño de referencia de convertidor ZETA síncrono de 40 W con inductor acoplado

This coupled-inductor, 13.2V at 4A, synchronous ZETA converter achieves greater than 95% efficiency at full load. It is capable of 5A out for Vin greater than 10V. It utilizes all surface mount components, maintains a low temperature rise and is capable of high peak load transients. See PMP9581 (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9581_REVC — Diseño de referencia de convertidor ZETA síncrono de 40 W con dos inductores

This dual-inductor, 13.2V at 4A, synchronous ZETA converter achieves greater than 93% efficiency at full load. It is capable of 5A out for Vin greater than 10V. It utilizes all surface mount components, maintains a low temperature rise and is capable of high peak load transients.  See PMP9581 (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP7282 — Diseño de referencia de convertidor buck bifásico con entrada de 35 V a 60 V, salida de 600 W y u

Este convertidor de potencia bifásico de 600 W, con una amplia entrada de tensión, utiliza dos controladores emulados de modo de corriente que están 180 grados fuera de fase para minimizar la corriente de rizado de entrada y salida. En comparación con los convertidores de potencia aislados (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian
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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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