一种用于光隔离IGBT栅极驱动的智能型LED驱动电路  

Intelligent LED Driver Circuit Based on Bipolar Technology for Optical Isolated IGBT Gate Driver

作　　者：徐鉴 邓光平[2] 蒲熙 刘昌举[2] 张继华[1] XU Jian;DENG Guangping;PU Xi;LIU Changju;ZHANG Jihua(School of Integrated Circuit Science and Engineering,University of Electronic Technology,Chengdu 611731,CHN;Chongqing Optoelectronics Research Institute,Chongqing 400060,CHN)

机构地区：[1]电子科技大学集成电路科学与工程学院,成都611731 [2]重庆光电技术研究所,重庆400060

出　　处：《半导体光电》2024年第1期79-83,共5页Semiconductor Optoelectronics

摘　　要：采用双极型工艺设计了一种智能型高速LED驱动电路,可用于光隔离IGBT栅极驱动芯片的输入驱动。该设计采用一种新型逻辑门结构来实现信号传输、故障反馈以及外部置位等功能,同时达到降低信号传输延迟时间的目的。测试结果表明,在常温条件下,LED驱动电路的输入信号传输延迟时间为70 ns,复位信号有效到故障消除的延迟时间为4.59μs。所设计的驱动电路能够满足光耦隔离IGBT栅极驱动芯片的使用要求。In this study,an intelligent high-speed LED driver circuit is designed using bipolar technology,which can be used as the input driver of an optical isolated IGBT gate driver chip.This design uses a new logic gate structure to realize the functions of signal transmission,fault feedback,and external setting and to reduce the delay time of signal transmission.The test results show that under normal temperature conditions,the input signal transmission delay time of the LED driver circuit is 69.99 ns,and the delay time from the effective reset signal to fault elimination is 4.59 μs.The designed driver circuit can meet the requirements of the optocoupler isolated IGBT grid driver chip.

关 键 词：绝缘栅双极型晶体管 双极型工艺 光耦隔离 故障反馈 LED驱动电路 

分 类 号：TN322.8[电子电信—物理电子学]