A High-Power-Density Integrated Electronic Ballast for Low Wattage HID Lamps

A high power density integrated electronic ballast for low wattage high intensity discharge (HID) lamp is proposed in this paper. Packaging and integration technologies are explored to fully utilize the three-dimensional space, therefore improve the power density of the system. This paper focuses on the power passive integration, including the integrated EMI filter, and the integrated LC series resonators serving as output filter or ignitor. A prototype with integrated passive components is developed, which achieves almost the same efficiency but doubles the power density of discrete ballast.