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This paper presents a high intensity discharge(HID) lamp for automotive illumination.A novel type of ballast for HID is proposed without an acoustic resonance.The system consists of high frequency DC/DC converter,DC/AC inverter(SLA2403M), high voltage igniter and a microcontroller unit(MCU).The proposed ballast controls the complex start-up process and constant power process by programming on the microcontroller. It is verified that experimental results agree well with the calculated ones. The ballast features such functions as failure protection, line under-voltage, line over-voltage, output short circuit and disconnection protections.
This paper presents a high intensity discharge (HID) lamp for automotive illumination. A novel type of ballast for HID is proposed without an acoustic resonance. The system consists of a high frequency DC / DC converter, DC / AC inverter (SLA2403M) igniter and a microcontroller unit (MCU) .The proposed ballast controls the complex start-up process and constant power process by programming on the microcontroller. It is verified that experimental results agree well with the calculated ones. , line under-voltage, line over-voltage, output short circuit and disconnection protections.