全集成式单相直流无刷电机控制芯片中关键电路的研究与设计

发布时间：2018-05-29 19:26

本文选题：全集成式 + 低压差线性稳压器　；参考：《华南理工大学》2014年硕士论文

【摘要】：由于直流无刷电机与普通有刷直流电机或感应电机相比，具有可控性强、调速范围宽、转子损耗低、热损耗低，效率高、成本低等优点，因此，单相直流无刷电机已在家用和工业用的中小型电机产品中得到广泛应用。近年来，国际上对单相直流无刷电机控制芯片的研究越来越重视，而全集成式的单相直流无刷电机控制芯片的研究与设计已经占据主流地位。论文研究与设计了全集成式单相直流无刷电机控制芯片，主要工作内容包括： 1、设计控制芯片的电路系统，重点设计了带隙基准源、6V输出的低压差线性稳压器、1.8V输出的低压差线性稳压器、占空比调节电路模块、内置功率MOS管驱动电路模块。电路仿真结果表明，带隙基准源输出1.22V，电源抑制比为70.6dB；6V和1.8V低压差线性稳压器输出电压分别为6V和1.8V，电源抑制比分别为63.7dB和67dB；占空比调节电路模块载波频率为25KHz，，当输入控制电压从0.75V变化到3.75V时，输出信号的占空比从100%线性变化到0%。 2、采用Global Foundry180nm BCD工艺，通过将高压器件DMOS与低压CMOS电路集成在一块硅片上的方法，完成芯片的版图设计和验证。芯片总面积1476um1450um，LDO模块面积396.315um622.42um，DUTM模块面积94.745um415.295um，DRIVER模块面积783.885um1380.34um。对实际芯片的测试结果表明，芯片的工作电源电压12V，工作电流为0.5A；LDO模块输出稳定电压6V和1.8V；当输入控制电压从0.75V变化到3.75V时，电机转速从4660rpm线性变化到0rpm。芯片实现了模拟电压线性调节电机转速的功能。
[Abstract]:Compared with ordinary brushless DC motor or induction motor, DC brushless motor has many advantages, such as strong controllability, wide speed range, low rotor loss, low heat loss, high efficiency and low cost. Single-phase DC brushless motor has been widely used in domestic and industrial small-and medium-sized motor products. In recent years, more and more attention has been paid to the research of single-phase DC brushless motor control chip in the world, and the research and design of fully integrated single-phase DC brushless motor control chip has occupied the mainstream position. This paper studies and designs a fully integrated single-phase brushless DC motor control chip. The main work includes: 1. The circuit system of the control chip is designed. The low voltage differential linear voltage regulator with low voltage difference of 1.8 V, the duty cycle adjusting circuit module and the driving circuit module of the built-in power MOS transistor are designed. The circuit simulation results show that, The output voltage of the bandgap reference source is 1.22V, the power rejection ratio is 70.6 dB 6V, and the output voltage of 1.8V low voltage difference linear regulator is 6V and 1.8V, respectively, and the power rejection ratio is 63.7dB and 67dB.The carrier frequency of the duty cycle regulating circuit module is 25kHz, when the input control voltage changes from 0.75V to 3.75V, The duty cycle of the output signal varies linearly from 100% to 0%. 2. Using Global Foundry180nm BCD technology, the layout design and verification of the chip are completed by integrating the high-voltage device DMOS and the low-voltage CMOS circuit on a single silicon chip. The total area of LDO module is 1476um 1450um. the area of LDO module is 396.315um622.42umDUTM module area 94.745um415.295umper module area 783.885um1380.34um. The test results show that the working voltage of the chip is 12V, the output voltage of 0.5ALDO module is 6V and 1.8V, and when the input control voltage changes from 0.75V to 3.75V, the speed of the motor changes linearly from 4660rpm to 0rpm. The chip realizes the function of analog voltage linear regulation of motor speed.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM33

【参考文献】