An energy-aware multiple-input power supply with charge recovery for energy harvesting applications

This paper describes an integrated power management system for use with multiple energy harvesters, which employs energy awareness and charge recycling. Previous multiple-input power management systems only allow energy to be harvested from a single source at a time (typically the source with the largest voltage) thereby wasting the energy from the other energy harvesters. In order to increase the total energy available, the work presented here allows the system to gather and add together voltages from multiple sources at the same time.