An Integration of Dual Active Bridge DC/DC Converters Used in Micro Converters Networks
Résumé
This article introduces an integrated converter structure based on CMOS dedicated power die and including a High Frequency (HF) transformer for galvanic insulation purposes. It is a generic and autonomous micro converter that can be assembled in a flip chip assembly on a PCB or ceramic substrate with decoupling capacitors. This micro converter can be used to supply floating loads such as gate drivers for logic level power device or to interact with stor-age or photovoltaic elements for balancing purposes. Based on the dual active bridge topol-ogy, the converter integrates only a HF transformer as a magnetic coupler. Intended to oper-ate at fixed input output voltage levels with close to unity transfer function, it exhibits fairly high efficiency while being a quite compact converter suitable for high integration level