Power management integrated circuit for energy harvesting with multi power mode selection

摘要

A power management integrated circuit (PMIC) for managing energy from an energy harvester is provided. The PMIC includes a discontinuous mode (DCM) voltage converter for outputting current pulses wherein the input and output voltages are sensed and digitized. The PMIC includes a power control circuit configured for selecting a power operational mode based on a monitoring of a parameter indicative of the input power Pin and based on a comparison of this parameter with one or more parameter reference values. The PMIC further includes a controller configured for defining a maximum peak current of the current pulses based on the input and output voltages of the voltage converter and based on the power mode selected.