1. C

    IPA50R140CP Replacement (PFC Circuit Repair)

    Hello Everyone I have a question. I've repaired a Corsair HX1000 power supply (for myself to use as a spare) that I got from someone who chucked it away. The two main switching transistors failed as well as the PFC circuit. The issue is, the PFC circuit uses 3 × IPA50R140CP MOSFETs and the...
  2. Younes Thabet

    What type of multi-level input filter is used in a 3-phase 30KW vienna PFC?

    Hello all, I have been checking this 30 kW Vienna PFC rectifier reference design and didn't understand why all of these filters are used for this kind of application, i mean half of the board is inductors and capacitors for the filters. Can someone explain what type of filters are used? and...
  3. P

    How PFC responds to Load power demand in SMPS (flyback) converter

    I tried to understand PFC in an SMPS voltage converter. I read from many websites but still confused very much about the following things. Situation: it’s an SMPS flyback (for example) converter, to output (for example) 24v dc to an inductive load of 100W (average). Input 230v AC mains 50Hz...
  4. kamranM

    Start-up and steady-state models of microcontroller

    I've been looking at UCC28C43 models provided by TI. Why do we need two different Spice models such as "Transient steady-state" & "transient start-up" for MOSFET driver IC? How do we use them? When do we need these analyses? Do all microcontrollers in power electronics have such separate models...
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