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参数

Topology Active-Clamp Forward, Flyback, Forward Control method Current VCC (Min) (V) 8 VCC (Max) (V) 15 Duty cycle (Max) (%) 76 UVLO thresholds on/off (V) Programmable/1.25V Frequency (Max) (kHz) 2000 Operating temperature range (C) -40 to 125 Gate drive (Typ) (A) 2.5 Features Current Limiting, HV Start-up, Soft Start, Supports PFET Clamp, Synchronization Pin Rating Catalog open-in-new 查找其它 PWM控制器和谐振控制器

封装|引脚|尺寸

TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new 查找其它 PWM控制器和谐振控制器

特性

  • Two Independent PWM Current Mode Controllers
  • Integrated High Voltage Startup Regulator
  • Compound 2.5A Main Output Gate Drivers
  • Single Resistor Oscillator Setting to 2 MHz
  • Synchronizable Oscillator
  • Active Clamp Gate Driver for P-Channel MOSFETs
  • Adjustable Gate Drive Overlap Time
  • Programmable Maximum Duty Cycle
  • Maximum Duty Cycle Fold-Back at High Line Voltage
  • Adjustable Timer for Hiccup Mode Current Limiting
  • Integrated Slope Compensation
  • Adjustable Line Under-Voltage Lockout
  • Independently Adjustable Soft-Start (Each Regulator)
  • Direct Interface with Opto-Coupler Transistor
  • Thermal Shutdown

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open-in-new 查找其它 PWM控制器和谐振控制器

描述

The LM5034 dual current mode PWM controller contains all the features needed to control either two independent forward/active clamp dc/dc converters or a single high current converter comprised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5034 includes a startup regulator that operates over a wide input range up to 100V and compound (bipolar + CMOS) gate drivers that provide a robust 2.5A peak sink current. The adjustable dead-time of the active clamp gate drivers and adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line under-voltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable restart delay, PWM slope compensation, soft-start, and a 2 MHz capable oscillator with synchronization capability.

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技术文档

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类型 标题 下载最新的英文版本 发布
* 数据表 LM5034 High Voltage Dual Interleaved Current Mode Controller with Active Clamp 数据表 2013年 3月 29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 2018年 6月 25日
用户指南 AN-1370 LM5034 Evaluation Board 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

设计与开发

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硬件开发

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document-generic 用户指南
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说明

LM5034 High Voltage Dual Interleaved Current Mode Controller with Active Clamp

特性
  • Two Independent PWM Current Mode
  • Integrated High Voltage Startup Regulator
  • Compound 2.5 A Main Output Gate Drivers
  • Single Resistor Oscillator Setting to 2 MHz
  • Synchronizable Oscillator
  • Active Clamp Gate Driver for P-Channel MOSFETs
  • Adjustable Gate Drive Overlap Time
  • Programmable Maximum Duty Cycle
  • Maximum (...)

CAD/CAE 符号

封装 引脚 下载
TSSOP (PW) 20 了解详情

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