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

Technical Documents

Type Description Language
Application Note How to step into communication mode (I²C) with the AS5715R English

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

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Based on the inductive sensor technology, these sensors measure 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, these products act as the perfect resolver replacement and can be used for on-axis as well off-axis applications!