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

LM5026

ACTIVO

Controlador PWM de 100 V con modo de corriente de pinza activa, FET de pinza de canal P o N y tempor

Detalles del producto

Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Current Topology Active-clamp forward Rating Catalog Features Current limiting, Dead time control, High-voltage startup, Leading edge blanking, Programmable max duty cycle, Programmable soft start, Supports NFET clamp, Supports PFET clamp, Synchronization pin Duty cycle (max) (%) 80
Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Current Topology Active-clamp forward Rating Catalog Features Current limiting, Dead time control, High-voltage startup, Leading edge blanking, Programmable max duty cycle, Programmable soft start, Supports NFET clamp, Supports PFET clamp, Synchronization pin Duty cycle (max) (%) 80
TSSOP (PW) 16 32 mm² 5 x 6.4 WSON (NHQ) 16 25 mm² 5 x 5
  • Current-Mode Control
  • Internal 100-V Start-Up Bias Regulator
  • 3-A Compound Main Gate Driver
  • High Bandwidth Optocoupler Interface
  • Programmable Line Undervoltage Lockout (UVLO)
    With Adjustable Hysteresis
  • Versatile Dual Mode Overcurrent Protection With
    Hiccup Delay Timer
  • Programmable Overlap or Deadtime between the
    Main and Active Clamp Outputs
  • Programmable Maximum Duty Cycle Clamp
  • Programmable Soft-Start
  • Leading Edge Blanking
  • Resistor Programmed 1-MHz Capable Oscillator
  • Oscillator Sync I/O Capability
  • Precision 5-V Reference
  • Current-Mode Control
  • Internal 100-V Start-Up Bias Regulator
  • 3-A Compound Main Gate Driver
  • High Bandwidth Optocoupler Interface
  • Programmable Line Undervoltage Lockout (UVLO)
    With Adjustable Hysteresis
  • Versatile Dual Mode Overcurrent Protection With
    Hiccup Delay Timer
  • Programmable Overlap or Deadtime between the
    Main and Active Clamp Outputs
  • Programmable Maximum Duty Cycle Clamp
  • Programmable Soft-Start
  • Leading Edge Blanking
  • Resistor Programmed 1-MHz Capable Oscillator
  • Oscillator Sync I/O Capability
  • Precision 5-V Reference

The LM5026 PWM controller contains all of the features necessary to implement power converters utilizing the active clamp and reset technique with current-mode control. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp and reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay, PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output capability, precision reference, and thermal shutdown.

The LM5026 PWM controller contains all of the features necessary to implement power converters utilizing the active clamp and reset technique with current-mode control. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp and reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay, PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output capability, precision reference, and thermal shutdown.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5026 Active Clamp Current Mode PWM Controller datasheet (Rev. E) PDF | HTML 30 nov 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
EVM User's guide AN-1387 LM5026 Evaluation Board (Rev. A) 06 may 2013
Application note Operation and Benefits of Active-Clamp Forward Power Converters 22 mar 2007

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

LM5026EVAL — Controlador PWM con modo de corriente de pinza activa

LM5026 Active Clamp Current Mode PWM Controller

Guía del usuario: PDF
Modelo de simulación

LM5026 Unencrypted PSpice Transient Model

SNVM015.ZIP (896 KB) - PSpice Model
Diseños de referencia

PMP22075 — Diseño de referencia de fijación activa de 12 V y 5 A de alta eficiencia con un amplio rango de entr

This forward-converter reference design is designed for an isolated 60-W, 12-V intermediate bus voltage rail. It operates in a wide-input range of 9 V to 60 V. The design features LM5026, a 100-V active clamp current mode PWM controller. A self-driven secondary rectifier with UCC27511 4-A and 8-A (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP11478 — Diseño de referencia de convertidor de fijación activa de voltaje de 30 W

PMP11478 is an isolated active clamp forward converter accepts a voltage range of 24-36V and delivers a 12V output at 2.5A. This design uses the LM5026 active clamp current-mode controller. Output voltage regulation is maintained using an LMV431 shunt regulator and opto-coupler feedback. Schottky (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 16 Ultra Librarian
WSON (NHQ) 16 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.

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