FMUSER Wirless Transmit Video And Audio More Easier !

[email protected] WhatsApp +8618078869184
Language

    Isolated Power Using Capacitor

     

    “隔离电源电路的集成H桥驱动器(MAX256)通常驱动变压器的一次侧,但它也可以驱动一对电容器,代替变压器提供隔离和功率传输。隔离电源通常由变压器产生,但也可以由电容器产生。对于某些系统,尺寸和成本的限制可能有利于电容器。在图1中,IC(MAX256)是用于隔离电源电路的集成一次侧控制器和H桥驱动器。它的振荡器、保护电路和内部FET驱动器通常为变压器的初级绕组提供高达3W的功率。在这种情况下,该设备驱动一对电容器,代替变压器提供隔离和功率传输。图1。该简单电路产生电容隔离输出电压。IC的可调开关频率(100kHz至1MHz)允许使用小型隔离电容器,如下所示,公式给出了1MHz时的电容器阻抗。在低输出功率下,损耗可以忽略不计: XC=½πfC=1/(2×3.14×106×0.45×10-6)×0.35Ω 来自IC(ST1和ST2)的互补方波驱动信号由隔离电容耦合,并由二极管进行全波整流,以产生隔离输出电压。高开关频率也允许使用小输出电容器。忽略开关损耗,输出电压为: VOUT=VIN-2VCAP-2VDIODE,其中VCAP=IOUT×XC。假设IOUT=500mAVOUT=5-2(0.5×0.35)-2(0.5)=5-0.35-1×3.7V 该电路适用于穿过隔离栅的电位差固定的应用(电容器提供直流隔离,但不用于交流信号。)对于所示的元件值和500mA负载,纹波电压约为直流输出电平的10%。您可以通过增加输出电容器的值来减少纹波。其他电路性能包括8Ω(~0.5A)负载的通电响应(图2)、空载通电响应(图3)以及通过将8Ω连接到空载输出获得的负载瞬态响应(图4)(在图2至图4中,通道3是+5V电源(VCC),通道4是输出电容器上的电压。)图2.图1电路在8Ω负载下的通电响应。图3.图1电路在空载下的通电响应。图4.图1电路的负载瞬态响应,从空载切换到8Ω负载。,阅读全文,技术专区 基于嵌入式系统的硬件仿真调试 MS1830芯片简述 高清多媒体接口(High Definition Multimedia Interface)转CVBS功能分析 MS9282芯片简介 功能是VGA转高清多媒体接口(High Definition Multimedia Interface) 详解集成式收发器带来交换解决方案 如何使用 DFT应用程序进行硬件仿真"

     

     

     

     

    List all Question

    Nickname

    Email

    Questions

    Our other product:

    Professional FM Radio Station Equipment Package

     



     

    Hotel IPTV Solution

     


      Enter email  to get a surprise

      fmuser.org

      es.fmuser.org
      it.fmuser.org
      fr.fmuser.org
      de.fmuser.org
      af.fmuser.org ->Afrikaans
      sq.fmuser.org ->Albanian
      ar.fmuser.org ->Arabic
      hy.fmuser.org ->Armenian
      az.fmuser.org ->Azerbaijani
      eu.fmuser.org ->Basque
      be.fmuser.org ->Belarusian
      bg.fmuser.org ->Bulgarian
      ca.fmuser.org ->Catalan
      zh-CN.fmuser.org ->Chinese (Simplified)
      zh-TW.fmuser.org ->Chinese (Traditional)
      hr.fmuser.org ->Croatian
      cs.fmuser.org ->Czech
      da.fmuser.org ->Danish
      nl.fmuser.org ->Dutch
      et.fmuser.org ->Estonian
      tl.fmuser.org ->Filipino
      fi.fmuser.org ->Finnish
      fr.fmuser.org ->French
      gl.fmuser.org ->Galician
      ka.fmuser.org ->Georgian
      de.fmuser.org ->German
      el.fmuser.org ->Greek
      ht.fmuser.org ->Haitian Creole
      iw.fmuser.org ->Hebrew
      hi.fmuser.org ->Hindi
      hu.fmuser.org ->Hungarian
      is.fmuser.org ->Icelandic
      id.fmuser.org ->Indonesian
      ga.fmuser.org ->Irish
      it.fmuser.org ->Italian
      ja.fmuser.org ->Japanese
      ko.fmuser.org ->Korean
      lv.fmuser.org ->Latvian
      lt.fmuser.org ->Lithuanian
      mk.fmuser.org ->Macedonian
      ms.fmuser.org ->Malay
      mt.fmuser.org ->Maltese
      no.fmuser.org ->Norwegian
      fa.fmuser.org ->Persian
      pl.fmuser.org ->Polish
      pt.fmuser.org ->Portuguese
      ro.fmuser.org ->Romanian
      ru.fmuser.org ->Russian
      sr.fmuser.org ->Serbian
      sk.fmuser.org ->Slovak
      sl.fmuser.org ->Slovenian
      es.fmuser.org ->Spanish
      sw.fmuser.org ->Swahili
      sv.fmuser.org ->Swedish
      th.fmuser.org ->Thai
      tr.fmuser.org ->Turkish
      uk.fmuser.org ->Ukrainian
      ur.fmuser.org ->Urdu
      vi.fmuser.org ->Vietnamese
      cy.fmuser.org ->Welsh
      yi.fmuser.org ->Yiddish

       
  •  

    FMUSER Wirless Transmit Video And Audio More Easier !

  • Contact

    Address:
    No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China 510620

    E-mail:
    [email protected]

    Tel / WhatApps:
    +8618078869184

  • Categories

  • Newsletter

    FIRST OR FULL NAME

    E-mail

  • paypal solution  Western UnionBank OF China
    E-mail:[email protected]   WhatsApp:+8618078869184   Skype:sky198710021 Chat with me
    Copyright 2006-2020 Powered By www.fmuser.org

    Contact Us