Abstract
Light-emitting diodes (LEDs) have long been utilized as the default component for signaling and interior lighting applications in automotive industry. The response rate of an LED as compared to a traditional incandescent bulb is ten times faster. The ease of maintenance and controllability feature of LEDs also makes them a natural choice for intelligent lighting system. This lighting can be adjusted based on the sensor inputs of a vehicle with ease. The multi lighting capabilities of a LED driver provides options that can address multiple applications with the same LEDs. A constant current is required for uniform LED lighting. Owing to the high reliability on LEDs for an array of applications in the automotive sector, additional circuitry for over voltage protection, under voltage protection, reverse polarity risk, over current protection, over temperature protection and short circuit protection needs to incorporated. The proposed design provides a improvement of 5% over the state of the art existing topology for over voltage protection.
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