Flyback Converter diode is acting like a switch linking the transformer secondary and the load. When the primary switch is ON, the primary will store energy. This time the diode will be reversed biased. Meaning, the load side will be cut off from the transformer. On the other hand, when the primary switch is off, the stored energy will be
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Several factors to consider in order to perfectly arrived a good Quasi Resonant Flyback transformer design. It needs to consider the input voltage and the allowed level of the switch drain to source (or collector to emitter) voltage of the switch to define the level of the reflected voltage (Vref). It is also required to know the level of the
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The key to deriving the current levels of every switching converter knows the type of waveforms. For flyback converter, the primary and secondary current waveforms are in triangular shape. Another important aspect is to know the operation of a QR flyback. The complete operation of a QR flyback is here. The current wave shape is could be summarized as: The
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The importance of DFMEA in product development is cannot be underestimated. It is an analysis that is good for both product robustness and overall safety. However, this design tool is not adopted by all product developers. The main reason is that this tool is maybe time consuming and needs a highly experienced design engineer to do so. DFMEA Definition DFMEA
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