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A review of the state of the art in the sliding-mode control of DC-to-DC switching converters is presented. The method of the equivalent control is illustrated in the design of a two-loop control for the voltage regulation of a buck-boost converter. The theoretical predictions are validated by means of PSIM simulations. Prospective applications of the method reported are also discussed.
A Zeta converter is a fourth-order DC-DC converter made up of two inductors and two capacitors and capable of operating in either step-up or step-down mode. Compared with other converters in the same class, such as Cuk and SEPIC converters, the Zeta converter has received the least attention, and more importantly, its dynamic modeling and control have never been reported before in the literature....
The problem of regulating the output voltage of DC-to-DC series resonant converters (SRC) is addressed. The difficulty is threefold: (i) the converter model involves discontinuous and highly nonlinear terms and is, further, controlled through a modulating frequency signal; (ii) all state variables are not accessible to measurements; (iii) the load is uncertain and may even be varying. An output feedback...
A digital control scheme for fully integrated high frequency DC-DC power converter is presented in this paper. A resonant converter current mode control algorithm uses a varactor-based control to obtain a regulated output voltage. Control algorithm is based on an accurate estimate of output voltage response and a state machine-based formulation. Employing a current-mode approach simplifies computation...
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