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Parallel current mode control algorithm for DC-DC converters is introduced in this paper. This control strategy is composed of two parallel terms: voltage term and current term which is calculated based on the input voltage, inductor current and output voltage. The new duty cycle algorithm requires only one multiplication, one division and three additions in digital implementation. The simulation...
In this paper, an overview of recent advances in digital control of low to medium power DC/DC switching converters is presented. Traditionally, such DC/DC converters have been almost exclusively controlled through analog electronics methods. However, with the steadily decreasing cost of integrated circuits, the feasibility of digitally controlled DC/DC switching converters has increased significantly...
In this paper, a novel control method is introduced which refers to the concept of parallel current-mode control algorithm to obtain good dynamic performance for Buck converter undergoing a rapid load change and input voltage change. The duty cycle consisting of two terms: voltage term and current term is simple for implementation. Since there are only three additions and two multiplications. Besides,...
Phase to amplitude conversion is an essential part in the technique of direct digital frequency synthesis. A novel theory of phase to amplitude conversion named curve approximation is proposed in this paper to solve the existing problems of present digital frequency synthesizers. It has more advantages over traditional phase to amplitude conversion methods, such as simple hardware circuit, fast conversion...
<para> A family of switch-linear hybrid (SLH) converters is proposed, which integrates the advantages of linear amplifiers into switch-mode converters without sacrificing the energy efficiency of the system. Due to its high input resistance and low output resistance, a source (emitter) follower is introduced to be the core unit fed by a switching-filter supply, which constitutes the hybrid converter's...
A double forward multiple output converter with weighted time-sharing control and switch-linear hybrid (WTSC-SLH) technique is presented in this paper. Total regulation of both output voltages is obtained by WTSC. Precise regulation and low ripple multiple output voltage can be achieved by a post regulator with SLH approach. The effects of WTSC-SLH is verified on an experimental two-output double...
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