Calculation of Transients and Parameters of the Circuit of a Voltage Doubler Based on Switched Capacitors

Abstract

Voltage doublers on switched capacitors are commonly used impulse voltage converters. The modern approach to designing electronic circuits involves the use of specialized circuit design programs, allowing us to take into account many factors and get a result as close as possible to the reality. A mathematical description of transients in the circuit of a voltage doubler is given. Using the mathematical modeling of transients, the formulas for designing the circuit of a voltage doubler based on switched capacitors are derived. The formulas take into account the requirements for setting the voltage and ripple levels and the relaxation time of the output voltage. The validity of analytical calculations is verified by the results of circuit simulation. The practical recommendations for choosing the scheme parameters are given. The work may be of interest to developers of analog circuits. The obtained formulas make it possible to quickly compute the circuit parameters and obtain the necessary characteristics.