Multiple-output class E isolated dc-dc converter

Pavlovic, Zoran; Oliver, J. A.; Alou, P.; Garcia, O.; Prieto, R.; Cobos, J.A.

doi:10.1109/ecce.2010.5618325

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…former Class E amplifier can be much reduced the circuit can find applications in low-cost, isolated miniaturised resonant dc/dc converters [7,10,11,13,14] and h.f. power generators [15,16].…”

Section: Discussionmentioning

confidence: 99%

A Transformer Class E Amplifier

Mikolajewski¹

2014

Archives of Electrical Engineering

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In a high-efficiency Class E ZVS resonant amplifier a matching and isolation transformer can replace some or even all inductive components of the amplifier thus simplifying the circuit and reducing its cost. In the paper a theoretical analysis, a design example and its experimental verification for a transformer Class E amplifier are presented. In the experimental amplifier with a transformer as the only inductive component in the circuit high efficiency ηMAX = 0.95 was achieved for supply voltage VI = 36 V, maximum output power POMAX = 100 W and the switching frequency f = 300 kHz. Measured parameters and waveforms showed a good agreement with theoretical predictions. Moreover, the relative bandwidth of the switching frequency was only 19% to obtain output power control from 4.8 W to POMAX with efficiency not less than 0.9 in the regulation range.

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Section: Discussionmentioning

confidence: 99%

A Transformer Class E Amplifier

Mikolajewski¹

2014

Archives of Electrical Engineering

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“…The advantages of class-E converter such as single low-side switch and soft-switching operation, maintain the popularity of this topology [2][3][4][5][6][7]. In addition, if isolation is required, it could be introduced by either a magnetic transformer [8,9] or alternatively by a piezoelectric transformer (PT). PTs are advantageous in some power electronic applications because of their relative small size, high insulation properties and potentially low cost.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of a class‐E resonant driver

Evzelman

Peretz

2015

IET Power Electronics

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In many applications of class-E converters, custom-made design of the isolation resonant network is impractical; instead, off-shelf products are used. In this case, matching the target output parameters to the converter component stresses requires an additional passive matching network. The design of this network has a tedious optimisation routine and may pose a considerable engineering challenge. This study introduces an optimisation method based on a behavioural modelling for class-E resonant converters, which significantly simplifies the component selection procedure. The method reduces the number of unknowns during simulation assisted parameter optimisation search. Successful implementation of the optimisation process is demonstrated on an off-line, digitally controlled class-E, piezoelectric transformer-based AC/DC converter, where the main inductor and the matching capacitance are the parameters to be optimised.

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