1、开关电源变压器设计 开关变压器是将DC电压通过自激励震荡或者IC它激励间歇震荡形成高频方波通过变压器耦合到次级,整流后达到各种所需DC电压 变压器在电路中电磁感应的耦合作用达到初次级绝缘隔离输出实现各种高频电压 目的减小变压器体积降低成本使设备小形化节约能源提高稳压精度 N 工频变压器与高频变压器的比较 工频 高频 E4.4f N Ae Bm f=50HZ E4.0f N Ae Bm f=50KHZ N Ae Bm 效率 =60-80 % (P2P2+Pm+ PC) 90% (P2P2+Pm) 功率因素 Cos=0.6-0.7 (系统100W供电142W) Cos0.90 (系统100W供电1
2、11W) 稳压精度 U%=1% (U20-U2U20*100) U4000V 延伸变形后1500V 3S线圈S线圈之间爬电耐压距离 1500V 1.5mm 4边缘胶带MARGINTAPE爬电耐压距离 边缘安胶W=3mm可根据Vi电压W1.52.mm 5采用TEXE线解决耐压距离 三重绝缘线 层6000V 延伸变形后耐压下降 6胶带绝缘层解决耐压距离 胶带村垫SOL一层SPC二层反贴胶带等 7规格耐压条件(3.0KV/60 2mA) 制程条件UL3.0KV 1.2倍/2 2mA 8层间耐压要求 层间耐压测试要求与AN有关 3）开关变压器的参数分析 （3） （2） 常規安全距离 MARGIN TA
3、PE 3mm 常規安全距离 MARGIN TAPE 6mm 2）絕緣空間設計 woil-woil 爬電距离 wire-core TUBE保護 woil-woil TUBE保護 2mm 2.0KV CS2670 耐壓儀 鐵平板 0.065m40KV CS2670 耐壓儀 鐵平板 空气爬電耐壓測試 膠帶耐壓測試 一漏感Lk當開關管達到高速開關時（截止）由于變壓器的Lk存在開關管兩端就會產生浪涌電壓整机中可以采用(電壓鉗位電路)來控制. 区 1.关于集肤效应可选用多股线（满足ba a=r2 b= r2*x x= x股线）满足高频负载电流降低变压器温升 2. 关于Lk与Cp是一对矛盾一般要求变压器平衡
4、Lk与Cp参数Lk不要追求愈小愈好Cp的增加会引起噪声的增加 开关变压器GAP Dongguan Yang Electronic Co., Ltd production scale, technical ability, has a highly skilled technical, managerial talent.Is a professional electronic transformer skeleton, core, magnetic processing and service in one joint-stock Limited, The development and de
5、sign on behalf of clients can be all kinds of precision molds.These include (EE EEL EF EFD EP EPC EQ PQ POT RM UU UYF UI FT ET UT EER ERL ETD EI GU pot size, etc.) Company area of 4,000 square meters.Have management, marketing, purchasing department, manufacturing department, materials, quality cont
6、rol, engineering a total of seven major departments; more than 180 employees, and according to ISO9001: 2008 international quality management system standard implementation of systematic management,customers enjoy a high reputation. Company framework for electronic transformers, magnetic core, magne
7、tic processing of the production process strictly, with layers of QC, the whole process to the idea of human control operations to take good quality and after-sales service market, has won praise from industry peers. Http:/ Http:/ Http:/ Http:/ 变压器磁芯;骨架;磁环;三层绝缘线;磁环底座;BASE;CASE;CORE;BOBBIN;磁环勾针; 磁环白壳;高频骨架;贴片骨架;DR工字磁芯 磁棒;Ni-Zn磁通;Mn-Zn高导磁环; Dong Guan Yang Tong electronics CO.,LTD 东莞洋通电子有限公司 TEL:0769-33354419 MOB:+86-13711869742 E-mail:sales01wholesale-patchcom Http:/ Http:/
