Why using newer Si SJ MOSFETs may not be a good idea for high frequency switching

By |2020-07-23T16:52:00+08:00July 23rd, 2020|about SiC, digest, ideas|

Key Takeaways: Output capacitance Coss related loss is the major switching loss in resonant soft switching.New generations of silicon super junction MOSFETs (SJ MOSFETs) dissipate more energy per switching cycle than legacy ones.Hysteresis of new generations of silicon super junction is larger and increases with increasing dV/dt and peak Vds.Resonant switching techniques are used to reduce

SiC can be extremely fast

By |2020-06-23T17:29:09+08:00July 1st, 2020|about SiC, digest, ideas|

People would think of GaN (gallium nitride) when talking about high frequency or very high frequency switching. However, a study published by scientists from Stanford University showed that SiC can also be extremely fast. The scientists demonstrated that DC-RF efficiency higher than 86% can be realized with a 17MHz class E inverter using SiC

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