Short technical notes from daily hardware work — measured on real boards, not hypothetical.
GaN HEMTs tolerate almost nothing at the gate: five volts, a few ohms, and nanoseconds of margin. This note collects the drive schemes, protection tricks and mistakes that decided whether my boards lived.
SiC datasheets promise cooler dies and smaller heatsinks — but only part of that survives contact with a real product. A measured comparison of SiC and silicon designs at the same power level.
Every stray nanohenry in a power loop comes back as ringing, overshoot and EMI. How I measure loop inductance, model it, and squeeze it out of multilayer layouts.