电子与封装2025，Vol.25Issue(9)：14-17,4.DOI:10.16257/j.cnki.1681-1070.2025.0089
芯片管脚热插拔失效分析和改进
Analysis and Improvement of Chip Pin Hot Plug Failure
戚道才 1梁鹏飞 2王彬1
作者信息
- 1. 智能汽车安全技术全国重点实验室,江苏无锡 214072||中科芯集成电路有限公司,江苏无锡 214072
- 2. 西安机电信息技术研究所,西安 710065
- 折叠
摘要
Abstract
Customers reported that two CKS32F030K6T6-based motor boards failed to drive motors normally,with measurements revealing a short circuit at the chip power supply pins.Technical analysis of the faulty board revealed that the general-purpose input pin(PA7)of the microcontroller unit(MCU)was damaged by an abnormal voltage surge,causing a short circuit between the positive power supply input pin(VDD)and the negative power supply input pin(GND).On-site inspection of the customer's circuit diagram showed that the damaged pin lacked surge protection measures.The testing process based on the actual application scenarios of the customer's circuit was optimized to avoid hot-swapping.In addition,parallel bidirectional transient voltage suppression(TVS)diodes and series current-limiting resistors were added to the MCU port pins to suppress surge voltage and mitigate damage risks.关键词
微控制器/浪涌/瞬态电压抑制管/热插拔Key words
microcontroller unit/surge/transient voltage suppression/hot plug分类
信息技术与安全科学引用本文复制引用
戚道才,梁鹏飞,王彬..芯片管脚热插拔失效分析和改进[J].电子与封装,2025,25(9):14-17,4.
