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UC3854BN
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UC3854BN

  • 所属类别:稳压器
  • 产品名称:增强型高功率因子前置稳压器
  • 厂商:TI
  • 生产批号:10+
  • 封装:DIP
  • 库存状态:有库存
  • 库存量:0
  • 最低订购量:10
  • 详细资料:点击查找UC3854BN的pdf资料
  • 点击询价
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  • Product Introduction

UC3854BN Enhanced high power factor pre-regulator

illustrate

 

This UC3854A/B product is a compatible enhanced version of pin UC3854. Like the UC3854, these products provide all the features needed for an active power factor correction preconditioner. The controller achieves a voltage close to the unit power factor corresponding to the AC input line voltage by shaping the AC input current waveform. To do this UC3854A / B adopts average current mode control. The average current mode control remains stable, and the low-distortion sine line is not like the peak current mode control without the need for slope compensation current.

A 1%, 7.5 V reference, fixed frequency oscillator, pulse width modulation, voltage amplifierwith soft start, line voltage feedforward (V RMS squared), input supply voltage clamp, over lilst feataures are currently relatively round.

 

characteristic

 

  • ThePWM controls the boost to near power factor
  • 限制线电流失真
  • Global action, no switch
  • Precise power limits
  • Fixed frequency average current mode control
  • High bandwidth (5 MHz), low bias current amplifier
  • Integrated current and voltage amplifier output wire clamps
  • Multiplier improvements: linear, 500 mV AC offset (no external resistor required), 0 V to 5 V Multout common mode range
  • A good comparison of V REF
  • Faster, improved accuracy allows comparison
  • UVLO options (V/10, 16, V/10 V or 10.5 V).
  • 300μA start-up supply current

ICs related to UC3854BN include:


Model Manufacturers lot number encapsulation illustrate
UC3854BN TI 10+ DIP Enhanced high-power factor pre-regulator
UC3854BN TI 0820+ DIP-16  

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