LM5026

正在供货

具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 PWM 控制器

产品详情

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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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM5026 Active Clamp Current Mode PWM Controller 数据表 (Rev. E) PDF | HTML 2015年 11月 30日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
EVM 用户指南 AN-1387 LM5026 Evaluation Board (Rev. A) 2013年 5月 6日
应用手册 Operation and Benefits of Active-Clamp Forward Power Converters 2007年 3月 22日
应用手册 Application Note 1387 LM5026 Evaluation Board (cn) 最新英语版本 (Rev.A) 2005年 9月 7日

设计和开发

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LM5026EVAL — 有源钳位电流模式 PWM 控制器

LM5026 Active Clamp Current Mode PWM Controller

用户指南: PDF
最新英语版本 (Rev.A): PDF
TI.com 上无现货
仿真模型

LM5026 Unencrypted PSpice Transient Model

SNVM015.ZIP (896 KB) - PSpice Model
参考设计

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测试报告: PDF
原理图: PDF
参考设计

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PMP11478 是一种隔离型有源钳位正激式转换器,接受 24-36V 电压范围,并提供 12V@2.5A 输出。此设计使用 LM5026 有源钳位电流模式控制器。采用 LMV431 并联稳压器和光耦合器反馈来维持输出电压调节。借助肖特基整流器可使用输出电容器存储的电荷实现 2.5ms 滞留。隔离电压为 2250 VDC,满足基本隔离要求。
测试报告: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 16 Ultra Librarian
WSON (NHQ) 16 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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