Today, many automakers are using LED lamp sources in exterior lamps to establish brand awareness and introduce specialized lamp designs. These eye-catching LED lamp source solutions require many control functions as the lamp functions are diversified and advanced, and accordingly the requirements for standardization and optimization of controllers are increasing. In particular, our LED rear combination lamps have a variety of LED loads according to the design of the lamp model, the installation position, and the diagnostic regulations, so that the design complexity and the number of specifications of the controller are increased [4].
In recent years, more and more aesthetic designs and new technologies are used by various automakers to optimize their controllers in cooperation with global partners to optimize costs [1]. Therefore, we aim to develop semiconductor specifications based on OE requirements for technology differentiation and circuit standardization to provide flexibility in responding to regulations, and to improve thermal characteristics and LED intensity control performance. This makes it possible to improve the system control performance and standardize the controller circuit.