毕业设计要做一款1MHZ的DCDC模块电源,之前只做过100KHZ-200KHZ的模块,对于频率这么高的模块实在有点无从下手,在论坛里找了找资料,发现相关的话题不多,希望做过,有经验的师兄师姐们能给小弟一些建议,譬如变压器的设计,相关控制芯片,开关管的选择等等.
电压大概指标如下:
输入9—18V
输出5V 1.2A
效率优于 0.8
谢谢各位不吝赐教!
1MHZ的模块电源
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@tired
3842zuigaopinlvshiduoshao?不懂洋文?那翻译一下吧,3842最高频率是多少?
As I know! CMOS version can run at 1MHz.
FlyBack is more easy to run at 1Mhz, but not easy to reach 80% for 6W output! So Forword may better!
You are a Student, so it's easy to reach IEEE paper, you can serch "resonant converter" then you can got a very long listing! In that age, Maga-Hz driver is very important part for their paper, due to no commicail controller can reach so high frequency! O!O!May you tell my age? Bye!
FlyBack is more easy to run at 1Mhz, but not easy to reach 80% for 6W output! So Forword may better!
You are a Student, so it's easy to reach IEEE paper, you can serch "resonant converter" then you can got a very long listing! In that age, Maga-Hz driver is very important part for their paper, due to no commicail controller can reach so high frequency! O!O!May you tell my age? Bye!
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@temp1234
AsIknow!CMOSversioncanrunat1MHz.FlyBackismoreeasytorunat1Mhz,butnoteasytoreach80%for6Woutput!SoForwordmaybetter!YouareaStudent,soit'seasytoreachIEEEpaper,youcanserch"resonantconverter"thenyoucangotaverylonglisting!Inthatage,Maga-Hzdriverisveryimportantpartfortheirpaper,duetonocommicailcontrollercanreachsohighfrequency!O!O!Mayyoutellmyage?Bye!
定频的阻容都是有偏差的,使用x843按频率上限设计为1MHz只能做科研,做产品不妥当.
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