Inductor-based modified dickson charge pump boost voltage converter with higher efficiency

Abstract

The goal of this paper is to show the performance of the DC–DC conversion technique of the Dickson charge pump and the comparative analysis of the inductor-based charge. The converter analysis, that involves the Dickson charge pump, is built on a novel series inductor and parallel capacitive construction, and it is profitable for energy harvesting applications. In this paper, we have shown the use of an inductor in five-stage Dickson charge pump to generate an output voltage of 8.76 V with 20 Ω resistive load and a 50 MHz external frequency. The least drop is at output voltage capacitor that is used as an energy storage element. In the experiment, the integrated charge-up converter is based on LC tank features. This unique simulation study is done in the T-Spice 0.18 μm CMOS process using an input voltage of 1.8 V, using high Vt and low oxide thickness Tox for reducing threshold voltage drop at latter stages.