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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
AS5715ReferenceBoard Application Board Reference Board for AS5715
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