3.2.2 Voltage and Current Sensing

To control the inverter stage for desired operation, voltage and current need to be sensed for processing by the digital controller. The design implements sensing scheme based on ADCs and sigma delta filter modules (SDFMs). An Excel® sheet is also provided in the install package to understand the sensing methodology. The Excel sheet is located at sdk_install_path_<version>\solutions\tidm_hv_1ph_dcac\hardware\baseboard\calculation.xlsx.

This reference design is supported in powerSUITE framework, which enables entering values of the components in the sensing circuitry resistor dividers (and so on) on the powerSUITE configuration (CFG) page of the solution. This page calculates the maximum sense value, which determines the feedback gain of the control system and is used for the compensation design and tuning.