A Digital-Type GaN Driver with Current-Pulse-Balancer Technique Achieving Sub-Nanosecond Current Pulse Width for High-Resolution and Dynamic Effective Range LiDAR System

📋 论文概要

本文提出一种数字型GaN驱动器，采用电流脉冲平衡技术，实现了亚纳秒级的电流脉冲宽度，解决了高分辨率LiDAR系统中激光脉冲宽度控制和精度问题。

💡 主要创新点

• 提出数字型GaN驱动器架构，替代传统的电容放电式驱动器，提升脉冲控制的灵活性。
• 引入电流脉冲平衡技术，有效补偿寄生电感影响，确保精确的ILASER电流脉冲宽度。
• 实现亚纳秒级（<1ns）电流脉冲宽度，突破传统驱动器的速度限制。

🏷 关键词

📄 原文摘要

applications, short laser pulse ILASER widths through GaN FET control methods and effective assurance of accurate ILASER are major challenges in highresolution light detection and ranging (LiDAR) systems (top of Fig. 29.6.1). Figure 29.6.1 shows two main laser-diode driver circuits for pulsed LiDAR applications [1]. A well-controlled pulse that accepts the parasitic inductance Lstray simplifies control in capacitor discharge driver circuit [2]. But, the fixed pulse shape of the ILASER results in an ineffective modulation of the pulse width tP and limits the distance resolution lP (left of Fig. 29.6.1). Under a high pulse repetition frequency (PRF), incomplete pulses and insufficient power will reduce the effective detection range since the VBUS

👥 作者与机构

Yu-Sheng Ma1, Zong-Yi Lin1, Yen-Ting Lin1, Cheng-Yen Lee1,

Tzu-Ping Huang1, Ke-Horng Chen1, Yin-Hsi Lin2, Shian-Ru Lin2, Tsung-Yen Tsai2 National Chiao Tung University, Hsinchu, Taiwan Realtek Semiconductor, Hsinchu, Taiwan 1 2 In automotive