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| Power Factor Correction Stage in Power Supplies |
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| Inductive load:
Hi, I am currently studying PFC circuits and there is something that is not clear for me, the output of a boost-PFC stage is usually specified with something like: Vout=400V, Iout=500mA. My question is, does this mean that the RMS of input current of the following stage, let's say a flyback converter, should not exceed 500mA ? this sounds wierd because I am sure RMS current of such converters could surpass this value in many power supply applications. Can any one help me understand this please ? |
| T3sl4co1l:
The output is DC. RMS is not very meaningful at DC. You would have to justify why you are using RMS in the first place. Tim |
| Inductive load:
Thanks for your reply, Actually I want to connect a PFC stage to a flyback converter, the primary side current of the converter is expressed with the RMS drain current: IdsRMS, and peak drain current : Idspeak. |
| NiHaoMike:
--- Quote from: Inductive load on November 14, 2019, 09:34:17 am ---Vout=400V, Iout=500mA. --- End quote --- Just multiply the two to get 200W, then you just have to make sure the load connected to it does not exceed that. |
| Inductive load:
Ok thanks I understand, but it is just not clear to me how the transformer transfers 200W max when 400V is applied across its primary inductor and let's say IdsRMS = 2A passes through it. |
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