TI TIDA－01421汽车有刷马达脉冲计数器参考设计
TI公司的TIDA-01421是用于无传感器位置测量的汽车有刷马达脉冲计数器参考设计,可配置用于许多DC马达解决方案,具有共模式输入范围宽-14V到80V,工作电压9-18V电池,工作脉冲频率范围100Hz-1.3kHz,马达最大电流+/-16A,和MSP430™ LaunchPad™开发板接口简单,是高精度测试解决方案.主要用在存储器座椅,电动车窗,侧镜,电梯门和电源箱.本文介绍了TIDA-01421主要特性,框图,和MSP-EXP430FR6989 LaunchPad™连接图以及电路图,材料清单和PCB设计图.
The demand to retain memory on the position of theseat, window, sliding door, mirror, lift-gate, and othersdriven by that motor has increased as small motorswithin the modern automotive vehicle continue toevolve. Existing solutions utilize multiple magneticsensors attached to the body of a motor to provide afeedback loop to the motor control module.
A sensorless approach provides redundancy forexisting solutions and, in some cases, removes therequirement for motors with sensors attached. Thesensorless approach has become increasingly popularthrough the implementation of an in-line, current-sense signal-conditioning circuit. This design provides asolution that is easily modifiable for many automotivemotor systems that control position measurement.
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