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LM25116

ACTIVO

Controlador reductor síncrono con modo de corriente y entrada de tensión amplia de 6-42 V

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LM25149 ACTIVO Controlador CC/CC reductor síncrono de 42 V con IQ ultrabaja y filtro EMI activo integrado Active EMI filtering and DRSS reduces EMI by an average of 25 dBµV.

LM25116

ACTIVO
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Detalles del producto

Rating Catalog Topology Buck Controller Iout (max) (A) 20 Vin (max) (V) 42 Vin (min) (V) 6 Vout (max) (V) 36 Vout (min) (V) 1.215 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification Duty cycle (max) (%) 98 Iq (typ) (A) 0.0046 Number of phases 1 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Controller Iout (max) (A) 20 Vin (max) (V) 42 Vin (min) (V) 6 Vout (max) (V) 36 Vout (min) (V) 1.215 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification Duty cycle (max) (%) 98 Iq (typ) (A) 0.0046 Number of phases 1 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • New, similar products available:
    • LM25141 45-V wide input range synchronous buck controller
    • LM5141 65-V wide input range synchronous buck controller
    • LM25148 42-V synchronous buck controller with ultra-low IQ and DRSS
    • LM25149 42-V Synchronous buck controller with ultra-low IQ and AEF
  • Emulated peak current mode
  • Wide operating range (up to 42 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 36 V
  • Precision 1.5% voltage reference
  • Programmable current limit
  • Programmable soft start
  • Programmable line undervoltage lockout
  • Automatic switch to external bias supply
  • 20-pin HTSSOP exposed pad
  • Thermal shutdown
  • New, similar products available:
    • LM25141 45-V wide input range synchronous buck controller
    • LM5141 65-V wide input range synchronous buck controller
    • LM25148 42-V synchronous buck controller with ultra-low IQ and DRSS
    • LM25149 42-V Synchronous buck controller with ultra-low IQ and AEF
  • Emulated peak current mode
  • Wide operating range (up to 42 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 36 V
  • Precision 1.5% voltage reference
  • Programmable current limit
  • Programmable soft start
  • Programmable line undervoltage lockout
  • Automatic switch to external bias supply
  • 20-pin HTSSOP exposed pad
  • Thermal shutdown

The LM25116 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 feedforward, 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 LM25116 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 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.

New products (LM25141, LM5141, LM25148, and LM25149) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

The LM25116 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 feedforward, 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 LM25116 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 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.

New products (LM25141, LM5141, LM25148, and LM25149) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

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LM25145 ACTIVO Controlador CC-CC reductor síncrono de 6 V a 42 V con amplio rango de ciclo de trabajo A next-generation solution that provides comparable functionality, smaller solution size and higher efficiency over a 6-V to 42-V operating voltage range.

Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM25116 Wide-Range Synchronous Buck Controller datasheet (Rev. F) PDF | HTML 3/11/2023
Informe Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10/04/2019
Informe Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 3/07/2018
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21/07/2016
Nota sobre la aplicación Automated Frequency Response Analyzer 9/10/2013
Nota sobre la aplicación Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) 23/04/2013

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

LM25116EVAL — Placa de evaluación para controlador reductor síncrono con entrada de tensión amplia LM25116

The LM25116 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM25116 controller IC. The evaluation board provides a 5V output with a 7A current capability. The wide input voltage ranges from 7V (...)

Guía del usuario: PDF
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En inventario
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Modelo de simulación

LM25116 PSpice Average Model

SNVM354.ZIP (58 KB) - Modelo PSpice
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Modelo de simulación

LM25116 Unencrypted PSpice Average Model

SNVM863.ZIP (2 KB) - Modelo PSpice
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Modelo de simulación

LM5116 PSpice Transient Model (Rev. C)

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

LM5116 Unencrypted PSpice Transient Model (Rev. A)

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

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

Le damos la bienvenida a la herramienta de diseño de inicio rápido LM5116, LM5116WG y LM25116. Esta herramienta independiente asiste al ingeniero de fuentes de alimentación en el diseño de un regulador buck CC-CC basado en un controlador buck sincrónico de esta familia de productos. De este modo, (...)

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian
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