CAJ | 학술논문

设计了一款用于双极型步进电机的斩波驱动电路，采用可变增益放大器实现电流检测和角度细分以提高精度，采用新型低功耗功率放大电路降低芯片功耗，并采用0.35μm BCD 工艺，最高输出电压为35 V，驱动能力为±2.5 A。测试结果表明，负载电源静态电流为3.9 mA，功率管导通电阻不超过0.23Ω，斩波电流误差小于8%。
설계료일관용우쌍겁형보진전궤적참파구동전로，채용가변증익방대기실현전류검측화각도세분이제고정도，채용신형저공모공솔방대전로강저심편공모，병채용0.35μm BCD 공예，최고수출전압위35 V，구동능력위±2.5 A。측시결과표명，부재전원정태전류위3.9 mA，공솔관도통전조불초과0.23Ω，참파전류오차소우8%。
This paper presents a chopper for bipolar stepper motor. To detect the current, implement microstepping drive, improve the accuracy and reduce power dissipation, a variable gain amplifier and a novel low power amplifier is designed. Fabricated in 0.35μm BCD process, with an output drive capacity of up to 35 V and ±2.5 A, the test results show that the load supply static state current is 3.9 mA, FET on resistance less than 0.23Ω, choppimg current accuracy less than 8%.