摘要
目前三相MOSFET驱动系统在新能源汽车、工业机器人和智能家居设备领域有着较广泛应用,根据设备系统中的高集成度和三相直流电机驱动需求,设计了一种PWM占空比可调的三相驱动电路。电路采用商用0.25μm高压BCD工艺设计,通过SPEED端口电压可设置PWM占空比0%到100%可调。当环境温度到达165.1℃可触发过温保护。该芯片内置PWM调制模块、电荷泵电路、自举监控模块、过温保护模块等,确保电路在整个系统中工作的可靠性。仿真结果表明,占空比可调的三相驱动电路满足设计要求。
At present,three phase MOSFET driver system is widely used in the field of new energy vehicle,industrial robot,and smart home equipment.Based on the requirements of high integration and three phase DC motor driver in the equipment systems,a three phase driver circuit with adjustable PWM duty cycle is designed.The circuit designed by commercial 0.25μm high voltage BCD technology,and the PWM duty cycle can be adjusted from 0%to 100%through the SPEED port voltage.When the ambient temperature reaches 165.1℃,the over temperature protection can be triggered.The chip is equipped with built in PWM modulation module,charge pump circuit,bootstrap monitoring module,over temperature protection module and so on,ensuring the reliability of the circuit in the whole system.The simulation results show that the three phase driver circuit with adjustable duty cycle meets the design requirements.
作者
荆洲
林雨佳
宋博尊
JING Zhou;LIN Yujia;SONG Bozun(The 47th Institute of China Electronics Technology Group Corporation,Shenyang 110000,China)
出处
《微处理机》
2025年第3期58-63,共6页
Microprocessors
关键词
PWM调制
过温保护
驱动电路
PWM modulation
Over temperature protection
driver circuit
