Optimal Control of a High Frequency Class-D Amplifier

Abstract

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Higher Power Density Amplifiers

“…The focus of this paper is not on the controller design and will not be elaborated further. However, the design of the full state controller for switch-mode audio power amplifiers is described in great detail in [11].…”

“…* Arnold Knott, e-mail: akn@elektro.dtu.dk This paper will deal with this challenge by proposing an improved switching strategy utilizing a high output filter ripple current in conjunction with full state control [11] to improve soft switching capabilities while keeping good audio performance. The result is that the power dissipation is distributed more evenly across the different elements of the amplifier leading to a decrease of operating temperature in limiting parts of the power stage, i.e.…”