How do you design wideband isolated current measurement for power electronics applications?

Wideband current measurement design: select sensing technology (Rogowski coil for AC with integrator, zero-flux (closed-loop) Hall for DC to high frequency, current transformer for AC), design or select for required bandwidth (dV/dt immunity, response time), implement proper integration for Rogowski (analog or digital, drift compensation), ensure isolation rating for power electronics voltages (>1 kV working, impulse withstand), and minimize insertion impedance. Address: position sensitivity (centering, calibration), high-frequency response verification (impulse or step response testing), thermal effects on Hall sensors, and saturation limits. For wideband (DC to MHz), combine technologies (Hall for DC to kHz, CT for higher frequencies) with frequency-domain combining network.