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首页> 外文会议>IEEE Custom Integrated Circuits Conference >A Monolithic I2V2-Controlled Dual-Phase LED Matrix Driver for Automotive Adaptive Driving Beam (ADB) Headlighting
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A Monolithic I2V2-Controlled Dual-Phase LED Matrix Driver for Automotive Adaptive Driving Beam (ADB) Headlighting

机译：用于汽车自适应驱动光束（ADB）大灯的单片I 2 V 2 控制的双相LED矩阵驱动器

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摘要

Conventional LED matrix drivers for automotive Adaptive Driving Beam (ADB) headlighting drive a serial-connected LED matrix, hence resulting in two power-conversion stages, low power-efficiency, and large current ripples. This paper presents a monolithic parallel-connected LED matrix driver. It exhibits a high power-efficiency (94.8%) because of only one power-conversion stage, and achieves substantially small LED current-ripple factor (5%). Attributed to the proposed $I^{2} V^{2}$ controller, good current balance between dual phases, accurate LED current regulation and fast transient response are achieved.
机译：用于汽车自适应驱动光束（ADB）的传统LED矩阵驱动器驱动串行连接的LED矩阵，因此导致两个功率转换阶段，低功率效率和大电流纹波。本文介绍了单片平行连接的LED矩阵驱动器。它具有高功率效率（94.8％），因​​为只有一个功率转换级，并且实现了大量小的LED电流纹波因子（5％）。归因于提议的$ i ^ {2} V ^ {2} $控制器，双阶段之间的良好电流平衡，实现精确的LED电流调节和快速瞬态响应。

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