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  1. Designing Flyback Converter | Forum for Electronics

    Jul 8, 2024 · So, I have been trying to simulate a flyback converter to understand its working in depth so I can move to QR Flyback converters later. There are a few issues I am facing with modelling which I …

  2. Fly back LTspice simulation - Forum for Electronics

    Jun 9, 2013 · You see heavy oscillating flyback current, probably unrealistic high leakage inductance. There are some hidden component parameters, e.g. output capacitor ESR. You apparently have …

  3. flyback vs push-pull vs forward converter - Forum for Electronics

    Apr 4, 2009 · Hi - can somebody tell me what advantages/disadvantages flybacks, push-pull, and forward converter DC/DCs have with respect to each other? Here's my attempt: Flyback: +lowest …

  4. Flyback converter high initial current spike at turn on

    Dec 8, 2009 · I am facing an issue, my flyback converter at turn on is having a large initial current spike at every PWM more than what the RC filter (1K,300pf) can suppress.

  5. Buck vs. Flyback - All About Circuits

    Jul 13, 2017 · I am familiar pretty well with those 2 topologies. I'm not familiar with a non-isolated step down topology with multiple outputs. That's why I asked about flyback. Moreover, buck converter at …

  6. Diode protection for mosfet and ic - Forum for Electronics

    Oct 29, 2017 · I am working on bldc controller, I knew that flyback diode should be used across the mosfet( drain to sourse). 1. But how can I choose the diode, is in4148 is enough? 2. And for mosfet's …

  7. 30 W DC-DC Isolated Flyback Converter - Forum for Electronics

    Jan 30, 2021 · For the flyback, assuming CrCM ( DCM ) at 9V in and 5.8V x 6A out ( 35W ) the ave input current is 4A, thus the peak current in the flyback mosfet will be 16A - so a 30 - 40A part needed also …

  8. High voltage startup circuits of flyback controllers (NCP1239 & NCP1219)

    Sep 5, 2024 · Hi, **..Question 1..** In AND8393 page 2 it shows a diode (D13) and two 1206 resistors (R41=R42= 1k82) being used in the HV startup circuit to NCP1219. The startup current is only 12mA …

  9. LTspice model equivalent to UC384x series | Forum for Electronics

    Jul 10, 2020 · Hi. I want to make an offline Flyback converter simulation in LTspice. Can anybody suggest a PWM IC model that is equivalent to or as near as possible to TI UC384x series in it?

  10. Bulk capacitor hold up time calculation | Forum for Electronics

    May 28, 2020 · it is flyback topology. Hold up time requirement is applicable for output, so we want to have Hold up time for output only. Sure, holdup time requirement is for output holdup. Depending on …