Design of class E resonant inverter electronic ballast for 35 watt automotive HID lamp

Abstract

This article describes the design of zero voltage switching (ZVS) electronic ballast for 35 watt automotive high intensity discharge (HID) lamp. The proposed electronic ballast consists of 2 circuits. There are class E zero-voltage-switching resonant inverter and the ignitor. The ballast is class E resonant inverter, which operated in zero-voltage-switching. This circuit used matching resonant method, which combined the technique between resonant circuit pi2a and resonant circuit pi4a together. The ballast operated in 1 MHz and ignitor will produced high voltage for starting the lamp. The Class E resonant inverter operated in zero-voltage-switching, which decrease the switching loss in MOSFET. The ballast circuit is designed to prevent in appropriate operations due to the acoustic resonances. The electronic ballast was designed of a dc input voltage 12 V, which assume for battery voltage.