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Among various converters, the LLC electric current resonant converter attracts attention because of high power density, low noise and high efficiency. However, this converter cannot apply the analysis of averaging method, and impossible to derivate the transfer function, so designing is difficult. In this study, we devised a method to derive a frequency response characteristic with a transfer function...
The motivation of this paper is to show systematic procedure how to design electronically reconfigurable first-order filtering section without change in network topology. It is verified that for different active elements matrix nodal methods can be directly used without any changes in the calculation algorithm. As a consequence this task does not represent problem and can be marked as educational...
This paper brings some practical examples how to create and utilize fractional-order two-terminal devices in analog filtering applications. Starting with desired decimal order of designed fractional-order element its passive circuit approximant is introduced and values of network components are calculated by using analytical formulas as well as Orcad Pspice optimizer. Then final device becomes a part...
Considering that the lifespan of electrolytic capacitors in power supply don't match that of LED, we propose a Buck converter which uses active ripple compensation circuit to replace the traditional electrolytic capacitor filter. When the converter works on long duty ratio, the power loss in compensation circuit is small and ripple current and voltage are low. The operation principle of this new topology...
The fixed on-time with bottom detection control having ripple injection has become very attractive due to practical usage and realization of ceramic capacitor solution for output while keeping ultra fast transient response. This paper presents quantitative analysis by introducing averaging method in comparator operation for the transfer function. As a result, the frequency response characteristic...
In recent years, the development of new technologies is requiring power supplies with wide conversion voltages. An alternative solution is to use a quadratic boost converter with a single active switch. This converter has two LC filters; thus, it will exhibit fourth-order characteristic dynamics. In this paper, switched linear, nonlinear averaged and linear averaged models are developed for the aforementioned...
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