A challenge for DC-DC converters miniaturization is the inability to integrate passive components on silicon due to their relatively large size at modern operating frequencies of some MHz. Switched Capacitor Converters may be a preferred choice for developing new miniaturized product formats because of their relatively small size and elimination of magnetic elements. The size and cost a DC-DC power supply are essentially defined by its bulky filter (storage) capacitor that is selected to meet output voltage ripple requirements. This paper investigates into filter capacitance reduction possibilities in different reconfigurable step-down capacitive converters by capacitor balanced switching. It is shown that balanced switching approach allows for filter capacitor reduction by 30-50% for an open-loop operation with a target voltage conversion ratio. Reducing filter capacitance also allows to speed up converter open-loop dynamic response.
|Number of pages
|Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM
|Published - Aug 13 2012
|2012 13th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2012 - Brasov, Romania
Duration: May 24 2012 → May 26 2012
ASJC Scopus subject areas
- Electrical and Electronic Engineering