Power path optimization for autonomous microsystems

Autonomous microsystems need more and more energy to respond to new functionality demands. Advance design methodology and blocs consumption reduction is not sufficient to develop an autonomous microsystem based on renewable energy sources. To extend lifetime and to achieve new functionalities, we develop a new architecture enabling new power paths between sources and loads. We show that this new architecture improves the efficiency by 33% in comparison with the conventional architecture. The novel architecture, more than just enabling better energy transfer, permits to reduce the stress and the size of the energy buffer, thanks to an extended energy equilibrium state.