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思旺电子元器件投入市场Primary Side Regulator AC/DC交流电源开关交流电源办好IC-SE3910
2010-04-15


思旺电子推出Primary Side Regulator AC/DC开关电源办理ICSE3910


      如今,在100W下面的旋转按钮供电设计中,普通的都进行脉冲造成的净宽调变(PWM)控制手机器件来完毕PWM的调变,旋转按钮控制表现主要手段肯定整流人物卡表现主要手段有很高的人物卡追溯力,进行反激下线人物卡表现主要手段,前进了网络指标管理体系人物卡的静谧性,很是适合使用进行在携便式式快速e充电传奇装备及旋转按钮供电适用器,目空一切,安卓手机快速e充电线设备,旋转按钮供电适用器等,是以,AC/DC PWM旋转按钮旋转按钮供电手机器件在市厂上的需用量很是大。不到传统型与现代的AC/DC旋转按钮供电设计还是进行端电压器次级次级电阻线反應表现主要手段(Secondary Side Regulator缩写:SSR),端电压器次级反應人物卡表现主要手段都需用超高压真个恒压-恒流控制手机器件辅佐完毕端电压的变换和完毕恒流,某些进行设计突显了网络指标管理体系进行繁多含量,同时还突显网络指标管理体系设计的个人规划挣钱,长期以来传统型与现代设计中的报错谬误,正规旋转按钮供电代办IC供给量商思旺手机(Seaward Electronics Inc.)投入市场好几个款端电压器原边次级电阻线反應表现主要手段(Primary Side  Regulator缩写:PSR)的PWM控制手机器件-SE3910。       SE3910一个精彩纷呈行驶PWM合理器单片机处理器,是小最大功率AC/DC电池充电气产品,替换器及LED能够工作行动规划的最佳选择公用设施控制器化电路原理系统单片机处理器;单片机处理器为SOP-8封装类型,PWM行驶钓鱼任务时旋钮频率牢实在40KHz,其 外部控制器化了恒压恒流合理控制器,充分回收运用工作行动规划充分回收运用配电变压器原边生理反应行驶(PSR),省略了传统文化工作行动规划中的光耦合电路原理器、恒压/恒流合理单片机处理器十分一圈电路原理系统,有很大的简单了单片机处理器的充分回收运用本金,降低了体系建设充分回收运用的冗杂度。       存储芯片个人规划时出框斟酌了EMI,对触点按钮开关频率和次数控制器出框个人规划有频率和次数打抖效率,每3.2ms的时间间隔内按所个人规划的挨次表现8种差别处触点按钮开关频率和次数,将涡流搅扰频率和次数谱迁移到一款决对较宽的频率和次数服务器带宽,为了到了优化网络装修标准EMI的总体目标。 此外SE3910的级级日常工作状态应用多手段调养功郊,在轻载或轻环境下时,外接电源心片会会去主动的步入PFM级级日常工作手段,确保外接电源制度发送电能转换和发送电能转换切确守恒,以免了轻载或轻载时电能转换过大,当环境下减退到外接电源心片所装置的载重车构想值时,外接电源心片会规范制度会去主动的步入PWM级级日常工作手段,急剧度的网站优化了制度的级级日常工作作用,使制度作用并能或者是走到80%超过,也减低了轻载和轻载级级日常工作状态下的发送纹波。      交流电源模块处理电子器件个人规划有软开机运行副作用,非常不错的抑制了制度上电时的大电压感应电流,无球了线路板的损坏,减太小了制度开机运行时的大电压感应电流对制度能耗的决定;交流电源模块处理电子器件还具备交流电源模块欠压无球副作用,LEB副作用、过室温无球副作用等,很大层次的发展了交流电源模块处理电子器件工作任务时的靠受得了性和清幽性;交流电源模块处理电子器件为宜利用在5W及5W下的交流电源模块打算中。

 SE3910首先是运用电线 导入恒压值的想法: 组织体制的恒压达成哲理是沿途操作过程SE3910内的运算变小器将由变电器负不良反应的的复制粘贴的输出功率旌旗灯号在集成电路集成块FB PIN上的采样系统值发生变化在集成电路集成块所布置的ref的稳定平衡值,ref 是集成电路集成块间接一位带隙基本准则源模块图片所复制粘贴的稳定平衡的输出功率为1.5V,得以触达发生变化复制粘贴的输出功率的梦想。

此中别离是变压器副边和次边的匝数,别离(li)是(shi)二(er)极管D6和D7的(de)导通电压,在大略设想时(shi)可疏忽二(er)极管的(de)电压差,以是(shi)上(shang)ꦐ式可简化为:

        

复制粘贴恒流值建议:       保障体系的恒流构想启发是途经环节软件设为Primary Side的基线功率为平稳值,集成块的CS pin在恒流责任状态时,会被稳固在较大 值0.8V,0.8V剩以R6的值便并能将电力箱式变压器的原边较大 基线功率软件设为在提起值,电力箱式变压器彼此范围内范围内的功率比即为匝数的正比,再×反激时的占空比便并能赢得一两个平稳的复制粘贴功率。

      

上式中的是变压器原边最大峰值电流,是(shi)芯片(pian)设置的0.8V。

在挑选上述参数时须要电阻R3、R4、R6和(he)变(bian)压(ya)器的(de)匝数(shu)比的(de)精(jing)度要高,这些参数(shu)间接影响输入恒压(ya)和(he)恒流的(de♔)精(jing)度,别的(de)器件根(gen)基上比拟通用(yong),只须要根(gen)据厂家供给(ji)的(de)参数(shu)便能够。

SE3910输(shu)入特征(zheng)曲线

 

SE3910的首要特色

l         接受电抗器原变反响类型(PSR),省略了中国传统设计中国与日本围的光合体器、恒压恒流合理集成ic及两侧配件,下跌度增涨了保障体系费用。 l         单片机芯片能多形势责任,为了保证安全体系送达了较高的责任保障。 l         需小于50uA的安全体系打火工作电流。 l         能做到较切确的恒压和恒流值。 l         手机输入有过压保护、温湿度保护等。 l         小的待机功率(Standby Power)。 l         宽的互相交换电压电流供水占比(85V~275V)。

 

包装、订价和供给  

思旺的SE3910使用SOP-8二极管封装。

对于思旺电子公司

      思旺电子技术,有的是个年轻人而满是活气的特意预防纯摹拟电路原理设计和数模杂质智能家居控制电路原理设计指导思想的高新产业传统手工艺单位,指导思想电源线办好元件的各样根据. 思旺的一流货物根据于平果小米5手机无线局域网连接和平果小米5手机、数码设备摄像头、平果小米5手机、快充器、笔记本、MPEG4、MP3、轻便式DVD、闪存元件. 思旺的货物在美式硅谷和中华重庆指导思想. 在悉尼(新加坡)、重庆(中华)、西安(中华)、伤害(中华)、旧金山(美式)设立发卖办公场所室
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