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Average input current is an important control parameter for many power supply control techniques, but it is difficult to obtain in LLC resonant topologies due to the irregular current waveform and the existence of circulation current. Conventional current sensing methods have low bandwidth and are inaccurate. This paper proposes a cycle-by-cycle average input current sensing method. It utilizes the...
In this paper, an overview of recent advances in digital control of low- to medium-power dc-dc switching converters is presented. Traditionally, analog electronics methods have dominated in controlling such dc-dc converters. However, with the steadily decreasing cost of ICs, the feasibility of digitally controlled dc-dc switching converters has increased significantly. This paper outlines a sample...
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 new and practical measurement method is proposed to characterize the planar transformer copper loss operating in a high-frequency switching mode power supply (SMPS). The scheme is easy to set up, and it provides an equivalent winding alternating current resistance, which is the result of all the field effects on the transformer windings to achieve more accurate copper loss characterization...
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