⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出一种用于汽车USB充电的低侧平均电流传感器，支持0.1-3A负载范围和亚100ns采样时间，实现了±60mA的高精度。通过自适应稳定助手、直流电平移位偏置和抗占空比电阻三种技术，分别解决了稳定延迟、轻载精度和带宽漂移问题。
Abstract In Paper 21.6, UESTC and SouthChip Semiconductor Technology present a low-side average current sensor for automotive USB charging, which supports 0.1-to-3A load range and sub100ns sample time with ±60mA inaccuracy. This is achieved by 1) an adaptive settling helper to reduce the settling delay, 2) a DC level-shift bias to improve the light-load current sense accuracy, and 3) an anti-duty resistor to suppress the drift of -3dB bandwidth. Optimizing in-vehicle USB (universal serial bus) charging lets users enjoy the convenience of charging [1,2]. High CC (constant current) and CV (constant voltage) accuracy are crucial for efficient and reliable power delivery. The top left of Fig. 21.6.1 gives the accuracy requirement of the common charging protocols including USB PPS (programmable power supply) and UFCS (universal fast-charging specification), where PPS is an important function of USB PD (power delivery). Targeting to achieve high-precision CC and CV
Jian-Jun Kuang1,2, Xin Ming1, Xin-Ce Gong1, Tian-Chen Lang2, Xiang Geng2, Bo Zhang1
University of Electronic Science and Technology of China, Chengdu, China, 2SouthChip Semiconductor Technology, Chengdu, China