Investigation of Inductor-based Fully On-chip Boost Converter

R. Ondica, D. Arbet, M. Kováč, V. Stopjaková (Slovak Univ. of Techn. in Bratislava, Slovakia)

This paper presents the efficiency investigation of a fully on-chip DC-DC step-up converter realized in a standard 130 nm CMOS technology and its comparison to previous works. Research is mainly focused on finding the optimum operation point to provide the high output power and conversion efficiency of the on-chip converter solution. The obtained output voltage of 1.2 V shows 98.6 % efficiency of power conversion, and the maximum output power of 6 mW is achieved. Another performed analysis has been focused on impact of inductor properties as well as impact of the control circuit on the main parameters of the developed boost voltage converter.