Abstract
Recently, I wrote about the workshops and presentations at APEC 2017 that talked about the challenges of magnetics in high-frequency power conversion. Those challenges include losses at high frequency, a lack of good data and models on losses in magnetic materials and devices, and lack of standardization of data from manufacturers. But there were also two other presentations that got me thinking in an entirely different direction: capacitive power conversion. By capacitive power conversion, I generally mean the use of “charge pump” techniques. For example, I am sure many of us have used the charge pump in RS-232 serial line driver ICs to convert +12 Vdc to –12 Vdc. Or maybe we have used a simple charge pump to create a +12 V or +15 Vdc from a +5 Vdc rail to power some small amount of analog circuitry.
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