AS5715R inductive motor control position sensor

High performance off-axis inductive position sensor with differential analog SIN/COS output

Features

  • Can be used in environments where lateral space is at a premium
  • Can sense motors with low and high pole-pair counts without losing resolution
  • Reduces torque ripple and increases efficiency of motor control
  • Works with motors up to 480 000rpm
  • Easy replacement of existing AMR/GMR sensors
  • Enabler for safety critical applications
  • Suitable for automotive applications

Benefits

  • Flexible pcb design possible – Hollow shaft and side shaft applications
  • Adaptable coil and sensor layout
  • High angular accuracy (less than 1.0°)
  • Low propagation delay
  • Sin/Cos output
  • Functional safety, diagnostics
  • AEC-Q100 Grade 0 qualified

Product parameters

Resolution 0.3° elctrical INL
Interfaces I2C
Output Differential analog SIN/COS
Max. Speed [rpm] 100000 (for 4-pole-pair)
Overvoltage Protection Yes
Redundant No
Supply Voltage [V] 5.0
Temperature Range [°C] -40 to 160
Package TSSOP-14
Automotive Qualified Yes

General Description

The inductive motor control position sensor detects the electrical position within one pole-pair of a rotating shaft and can be used for the motor commutation of a brushless DC (BLDC) motor. Based on the inductive sensor technology, this family measures the coupling between an excitation coil (TX) and two receiver coils (RX) via a rotating target. The coils are executed as printed circuit coils and the rotating target is a simple punched metal part. With the correct layout of the coils and the target, both synchronized to the number of pole-pair count of the motor, the IC output is proportional to the electrical angular position within one pole-pair segment with increased resolution and high performance of only 0.3° electrical INL!
Due to its flexibility, easy adaption and low overall system costs, this family acts as the perfect resolver replacement and can be used for on-axis as well off-axis applications!

This product suits for the following applications:

  • EPS motor drive
  • HVAC pumps
  • Electric window lift

Tools

Title Category Headline Buy
AS5715RReferenceBoard Application Board Reference Board for AS5715R
AS5715R Evaluation Programmer Board Tools AS5715R Evaluation Programmer Board

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate_AS5715R English

Other Information

Type Description Language
Block Diagram Block diagram AS5715R English
Factsheet Precise Position Sensing with Inductive Technology (Application Sheet /Example) English
Factsheet Inductive High Speed Motor Control (AS5715R) English

电感式电机控制

这些传感器基于电感式传感器技术,通过一个旋转目标来测量励磁线圈(TX)和两个接收器线圈(RX)之间的耦合。这些线圈用作印刷电路线圈,旋转目标则是一个简单的冲压金属件。线圈和目标如果正确部署,都会与电机的极对数同步,IC输出与单个极对数分段内的电角位置成正比,具备更高分辨率,以及仅0.3°电气INL的高性能!


这些产品具有灵活性、易用性和较低的总体系统成本,因此是旋转变压器的理想替代方案,可用于在轴和离轴应用中!