A power control system and method including a plurality of point-of-load regulators (POL) providing corresponding regulated output voltages; a manager for communicating control signals and operational parameters with said point-of load regulators; a digital bus to carry control signals therebetween; and an analog bus to carry operational parameters therebetween. Analog sensing circuits and a mutliplexer on the POL communicate operational parameters to and from the manager via the analog bus and are controlled via the digital bus. The operational parameters include output voltage, output current, over voltage, temperature, amplifier or comparator offset, and amplifier gain. The analog sensing circuits are calibrated by trim registers on the POL under digital control by the manager.