Isolation amplifier for high voltage measurement using a resonant control loop

Some papers describe a novel pulse width modulation, which makes enter converter´s current control loop in a resonant mode and permits an accurate tracking of the reference. Here, we investigate an analog high voltage measurement board, which implements an isolation amplifier using this modulation strategy. Thus, the isolation amplifier involves an analog-to-digital converter whose operating mode depends on this modulation technique. Then, a linear model of the encoder-decoder is found. The results demonstrate its excellent performances