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AS5147P High Speed Rotary Position Sensor

14-bit On-Axis Magnetic Rotary Position Sensor with 12-bit Binary Incremental Pulse Count

The AS5147P is a high-resolution rotary position sensor for high speed (up to 28krpm) angle measurement over a full 360 degree range. This new position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency.

The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5147P and to program non-volatile settings without a dedicated programmer.

Incremental movements are indicated on a set of ABI signals with a maximum resolution of 4096 steps / 1024 pulses per revolution. The product is defined as SEooC (Safety Element out of Context) according ISO26262 including FMEDA, safety manual and third party qualification.

AS5147P high resolution rotary position sensor block diagram

Key Features

  • DAEC™ Dynamic angle error compensation
  • Immune to external stray magnetic field
  • 14-bit core resolution
  • Maximum speed up to 28.000 rpm
  • Developed per ISO 26262 SEooC

Key Benefits

  • Eliminates angle measurement lag at high RPMs
  • Lower system costs (no shielding)
  • High resolution for motor & position control
  • No programmer needed (via SPI command)
  • Enables ASIL-x system safety level compliance

Applications

  • BLDC/PMSM motor commutation (Pumps, DCT, Starter, Alternator, Wiper, etc.)
  • Safety Critical Automotive Systems (EPS, Brake, etc.)
  • Resolver replacement
  • Discrete Hall commutation feedback replacement
  • Servo motor position control

AS5147P Product Facts

Resolution 14-bit / 12-bit
Interfaces SPI
Output SPI, ABI, UVW, PWM
Max speed [rpm] 28000
Overvoltage protection [ ]
Redundant
Supply voltage [V] 3.3 or 5.0
Temperature range [°C] -40 to +150
Package TSSOP-14
Automotive qualified