An Asynchronous AC-DC Boost Converter with Event-driven Voltage Regulator and 94% Efficiency for Low-frequency Electromagnetic Energy Harvesting

This brief presents an asynchronous AC-DC boost converter with a high power conversion efficiency (PCE) and a low start-up voltage. The converter consists of a self-powered rectifier with unbalanced comparator, followed by a hysteresis DC-DC boost converter with an ‘event-driven’ regulation loop, enabling boost conversion and output regulation without the need for a system clock, leading to signif...