Renesas IPS22 电感式位置传感高速马达换相解决方案

Renesas公司的IPS220是电感式位置传感器,可为工业电机提供对杂散磁场完全免疫，重量轻，成本低且薄型的设计.器件符合工业标准,可在恶劣环境和-40°C 至+125°C的环境温度下稳定运行. 接口为正/余弦单端或差分,电源电压为3.3V±10％或5.0V±10％,转速最高250,000 rpm(电周期).可编程传输延迟,小于10µs,采用正/余弦增益失调和偏移补偿,具有过压,反极性与短路保护,数字编程接口为I²C 或 SPI. 传感器具有高精度, ≤ 0.2%满刻度.旋转检测高达360º角度,主要用在无刷DC马达旋转位置检测,无刷旋转变压器和无磁转子转速传感器,满足了多极对电机和离轴应用的要求.本文介绍了IPS2200主要特性,多种应用配置图,以及评估板IPS2200STKIT主要特性,电路图和材料清单.

The IPS2200 is a magnet-free, inductive position sensor ICs that can be used for high-speed absolute position sensing in automotive, industrial, medical, and consumer applications. The IPS2200 uses the physical principle of eddy currents to detect the position of a simple metallic target that is moving above a set of coils, consisting of one transmitter coil and two receiver coils.

The three coils are typically printed as copper traces on a printed circuit board (PCB). They are arranged such that the transmitter coil induces a secondary voltage in the two receiver coils, which depends on the position of the metallic target above the coils.

A signal representative of the target’s position over the coils is obtained by demodulating and processing the secondary voltages from the receiver coils. The target can be any kind of metal, such as aluminum, steel, or a PCB with a printed copper layer.

The IPS2200 provides two independent interfaces:

· A high-speed analog or digital interface providing position information in the form of demodulated analog sine/cosine raw data or digital incremental outputs

· An I2C or SPI digital interface for diagnostics and programming

The IPS2200 operates at rota...