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What is the effect of switching frequency on converter IC efficiency?

April 26, 2017converter efficiency Frequency IC switching

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What is the effect of switching frequency on converter IC efficiency?

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A high switching frequency allows use of physically smaller external components. However, the converter IC”s power MOSFETs must operate efficiently at the switching frequency, which means a fast rise and fall times as well as a low on-resistance. In addition, the external inductor employed by the converter IC must exhibit minimal losses at the switching frequency and load current.