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120W\24VԴĵ·

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120W\24VԴĵ·

Ҫ

  ѹ:AC85~265V,50Hz

  ѹ:DC16~24V?

  :5.0A

  ܵ:1%?

  2.Ʋ

  Ҫ,ͼ8-12ʾԭͼ˵Ʋ衣

 24VԴѹԴԭͼ

120W?24VԴѹԴԭͼ

(1) ѡ

ҪѡTOP248YΪԴ?ʱTOP248Yʵ,趨ֵ,ֱԴ?ѹֵ趨DC450V,ѹֵ,topswitch-gxйض,,ֱѹֵָ, topswitch-gxлָ?ƵѡFҲԴֱ,ʱعƵ趨132kHzѹij(ŵ)LmеĵѹĹϵΪ:

(2) ѹҪ

I(8-9ʽ:UoΪ˵ĵѹ,rΪ  ʽ֪:ѹijֵҪʵ,һ300~3000yH֮?ʴӦȡ;֮,ȡ?ѹв̫С,̫СTopswitch-GXϵMOSFET©̫,ʹ,ͬʱɹ,ʹԴ?ͬҲ̫,̫ʵҪ

  (3)Դμ·

μ·Ҫѡܺ˲?ܵѡӦ͵ѹ,ֵѡΪ

TRLC2lo=25=10(A)oD(8-12)

 

ʽ,U0Ϊѹ;IoΪ;UasΪֱѹ;D=nΪصСռձnΪѹı

  Ulms=375V,Uo=24V,Dn=0.18ʽ(8-12)õѹıΪN4

  ʱѹijŵΪIm=5/4=1.25(A)(8-13)ֵԶСTOP248Y©(7.2A)

  Դμѹϵ͵,һФػ,Сܵ?ѹϸʱ,Ҫÿָ(ͼ8-12VD2);Ƶʽϸʱ,Ӧóָ,ԼС䷴ԳӰ

  ˲C7ӦѹƲҪ,L1C8ӦЧ˳Ӱ

  (4)·

  ·ùͿɵѹTL431ɵĵ·,ͼ8-12ʾ·еVR2?R5?R7?R10?R11R6ɵѹ·?R5Ϊ,Ӱ·ļ⻷·?˲,,ӶıƶCĵʵԤ,ȷڵ͵ѹʱﵽ涨ĵֵ?R9?C10?C11R4?C4ɻ··

  3.Ӧע

  Topswitch-GXϵеԴƵõ,Ҫ;Ʋ,һЩ?24VԴʱӦע¼

Ϊ24VԴʽϴ,Ҫѹ©ӦС,رڵѹ¸Ӧ?ѹij?μӦ?ʹ,ѹ©дпܳ˲̬ƶVR1Ĺ,R2?R3C2VR1,©еֵR2?R3,Ա֤VR1Ĺɿ;ͬʱֽѹǯλDC200V,ʹtopswitch-gxڵԴ,ȷڲMO)SFET©ѹDC700V?

  ˲ݵĵЧӦС,رڵѹ¸Ӧڵ󽵵24VԴĿɿ?

  ۹ӦƶC,ƶC˲ӦԴ;๦ܶLFMԴҲӦܶ,ͬʱҪԶ©,ԼСԴ?


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