摘要
研制了一款具有强驱动电流且能稳定工作的光电耦合器芯片,其中含有欠压锁存电路、逻辑控制模块以及后级的Push-Pull驱动电路。详细分析了欠压锁存(UVLO)及逻辑控制模块的工作原理,并以此为基础对整体外围电路进行仿真,仿真驱动电流达到3A以上。实测结果表明,当电源电压为30V、测试温度为25℃时,芯片正向峰值电流可达2.8A,负向驱动电流峰值可达2.5A,满足系统设计指标,适用于大型电力电子工业系统中。
Developed is a kind of optocoupler chip with strong driving current and steady operation.It includes the under voltage lockout circuit and the logic control module and uses Push-Pull as the driving circuit.The working principles of the under voltage lockout（UVLO）and logic control module were analyzed in detail,based on which the whole peripheral circuit was simulated with the driven current to be more than 3A.Experimental results show that when the power is 30V and the working temperature is 25℃,the forward peak current and the negative peak drive current of the chips can reach 2.8A and 2.5A respectively.It can be applied in largescale power electronic systems.
出处
《半导体光电》
CAS
CSCD
北大核心
2014年第3期415-417,共3页
Semiconductor Optoelectronics
基金
国家自然科学基金项目(61166026)
陕西省自然科学基金项目(2013JM5002)
