Forward with Active Clamp for space applications: clamp capacitor, dynamic specifications and EMI filter impact on the power stage design
2017
The impact of the clamp capacitor design, the dynamic specifications and the EMI filter design on the power stage design of a 28V 50W Forward with Active Clamp converter for space applications is analyzed along this paper. Clamp capacitor is designed by considering the ECSS standards limitations for the semiconductors and saturation of the magnetic components, and considering the influence of the resonance between this capacitance and the magnetizing inductance on the input impedance of the converter. Dynamic specifications influence are analyzed. Additionally, the EMI filter design process is described. Singlestage and Multi-stage approaches are proposed. All these features make an increase of 2:4W losses and 1:6 higher area of the converter, compared with a preliminary design of the power stage, before considering these aspects.
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