An Analytical Model of AC-DC Charge Pump Voltage Multipliers

Toru TANZAWA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E99-C    No.1    pp.108-118
Publication Date: 2016/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.108
Type of Manuscript: PAPER
Category: Integrated Electronics
Keyword: 
AC-DC,  charge pump,  modeling,  multiplier,  rectifier,  RF-DC,  

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Summary: 
This paper proposes an analytical, closed-form AC-DC voltage multiplier model and investigates the dependency of output current and input power on circuit and device parameters. The model uses no fitting parameters and a frequency term applicable to both multipliers using diodes and metal-oxide semiconductor field effect transistors (MOSFETs). Analysis enables circuit designers to estimate circuit parameters, such as the number of stages and capacitance per stages, and device parameters such as saturation current (in the case of diodes) or transconductance (in the case of MOSFETs). Comparisons of the proposed model with SPICE simulation results as well as other models are also provided for validation. In addition, design optimizations and the impact of AC power source impedance on output power are also investigated.