Modelling cross‐regulation in a single switched capacitor DC‐DC converter

Abstract

The letter proposes to model cross-regulation in a dual-output switched capacitor converter (SCC) by three equivalent resistances connected in delta circuit. It is shown that as opposed to linear equivalent (output) resistance of singleoutput SCCs, these resistances are voltage-controlled. The obtained analytical expressions have been verified by simulations and give correct results even if the output voltages change in wide range. The proposed analysis paves the way for modelling cross-regulation in complex SCCs with multiple topologies and can be useful in studies of crosstalk through parasitic capacitances on chip.

A low output ripple and high security on‐chip voltage regulation based on Fourier transform

“…16 In order to address the high overhead issue induced by the embedded machine learning module, in this paper, Fourier transform is utilized for achieving the classification for the WAMPSCC instead of relying on the complex CNN architecture. Since the output voltage ripple of a single-phase SC converter is a piecewise and periodical signal, 17,24,25 when a Fourier transform is used for processing the voltage ripple, the amplitude of voltage ripple of the single-phase SC converter can be modeled accurately. Furthermore, if the sine and cosine functions related with Fourier transform are extended for quantifying the voltage ripple of a multiphase SC converter, the corresponding ripple with respect to a WAMPSCC can also be determined.…”

Maximum resolution of switched capacitor converter: a graphical approach

“…This is similar to the efficiency of the circuits that use a variable resistor or linear regulator. Therefore, voltage regulation is avoided, and the SCC is generally used as a constant gain converter, except for low power circuits [20], [21].…”