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LM5026

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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

Topology Active-clamp forward Control mode Current Duty cycle (max) (%) 80 Switching frequency (max) (kHz) 1000 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 UVLO thresholds on/off (V) Programmable/1.25V Operating temperature range (°C) -40 to 125 Rating Catalog Gate drive (typ) (A) 3 Vin (max) (V) 15
Topology Active-clamp forward Control mode Current Duty cycle (max) (%) 80 Switching frequency (max) (kHz) 1000 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 UVLO thresholds on/off (V) Programmable/1.25V Operating temperature range (°C) -40 to 125 Rating Catalog Gate drive (typ) (A) 3 Vin (max) (V) 15
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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LM5025 正在供货 具有 P 或 N 沟道钳位 FET 和 0.25V CS 阈值的 90V 有源钳位电压模式 PWM 控制器 Lower 1ku price

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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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评估板

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

PMP11478 — 30W 有源钳位正向转换器参考设计

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
参考设计

PMP7895 — 12V+/-10% 输入电压、12V 输出电压/1A 有源复位反激转换器参考设计

PMP7895 是一种有源复位反激式转换器参考设计。此设计接受 12V+/-10% 输入电压,可实现 12V 输出,并且能够为负载提供 1A 电流。
测试报告: PDF
原理图: PDF
封装 引脚 下载
TSSOP (PW) 16 查看选项
WSON (NHQ) 16 查看选项

订购和质量

包含信息:
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  • 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

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