A power control system and method senses input and/or output voltages of a power supply using sense currents in order for an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the power control system. By sensing sense currents, the power control system...http://www.google.com.au/patents/US8022683?utm_source=gb-gplus-sharePatent US8022683 - Powering a power supply integrated circuit with sense current
