Study of the Impedance of the Bypassing Network of a Switching Cell -Influence of the Positioning of the Decoupling Capacitors - Archive ouverte HAL
Communication Dans Un Congrès Année : 2019

Study of the Impedance of the Bypassing Network of a Switching Cell -Influence of the Positioning of the Decoupling Capacitors

Résumé

Mechanisms responsible for ringing and oscillations in power converters at transistors turn-offs are, first, studied using small signal modelling. It is explained why a 50 % derating must be applied to high-speed transistors. Experimental measurements validate the analytical predictions. The influence of the distance between a switching cell and its decoupling capacitors is then studied; it appears that using a low-inductance – though simple – layout results in a stray inductance as low as 11 nH when the capacitor is 30 cm away from the switching cell, enabling degrees of freedom for thermal management.
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Dates et versions

hal-02187484 , version 1 (17-07-2019)

Identifiants

Citer

Yoann Pascal, Denis Labrousse, Mickael Petit, François Costa. Study of the Impedance of the Bypassing Network of a Switching Cell -Influence of the Positioning of the Decoupling Capacitors. 2019 IEEE International Workshop on Integrated Power Packaging (IWIPP), Apr 2019, Toulouse, France. ⟨10.1109/iwipp.2019.8799093⟩. ⟨hal-02187484⟩
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