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  1. L

    On resistance of MOSFETs vs temperature

    I'm in the process of doing the calculations for a 1kw half bridge SMPS, and as part of that I wanted to calculate the estimated maximum dissipation in the MOSFETs, so I can decide which MOSFETs I need and which cooling fins to put on them. Pretty much every MOSFET mentions their typical Rds on...
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    Questions about current transformer

    Because of their increase in efficiency, compared to just using a current sense resistor, especially in high current SMPS's, current transformers are in my opinion the best way to go. However, I still have two questions which I haven't been able to find an answer for, one is theoretical and the...
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    Efficient transform primary winding vs stable output regulation

    I've been wondering about something for a while now. One of the main advantages about commercial SMPS power supplies is that they will work off a very broad input voltage range, generally about 85-240VAC. When winding a transformer, you'll have to wind the primary with the mimimum expected input...
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