Distributed capacitance is inevitably generated when the pcb transformer winding is wound around the magnetic core skeleton, especially when the number of layers is too large. Since the transformer works at high frequency, these distributed capacitors will have a great impact on the working state of the transformer, such as causing waveform oscillation, EMC variation and transformer heating.
Since distributed capacitance is harmful, we should try to reduce the impact of distributed capacitance. First, analyze the composition of distributed capacitance.
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