Electronics and Semiconductors

Renesas expands inductive position sensing portfolio to automotive motor commutation with IPS2550 sensor

16 February 2021

Renesas Electronics Corporation has launched its magnet-free IPS2550 inductive position sensor. Featuring improved performance and easy customization, as well as total stray field immunity and reduced weight and form factor, the IPS2550 is ideal for use as an absolute position sensor for high-speed motor commutation in passenger cars, motorbikes and heavy-duty commercial and off-road vehicles. With its optimized bill-of-materials, the new sensor allows customers to cost effectively tailor sensor design for their applications and maximize the performance of the sensor’s accuracy.

Customers can also take advantage of a complete motor commutation solution for traction motors, Source: Renesas Electronics CorporationSource: Renesas Electronics Corporationelectronic power steering, starter generators and other motor applications when combining the new sensor with Renesas microcontrollers (MCUs), gate drivers and motor drivers.

Based on Renesas’ inductive position sensing technology, the magnet-free IPS2550 delivers speeds up to 600 krpm (electrical) and is designed around the motor, accommodating both off-axis (through shaft and side shaft) and on-axis positioning. Users can match the number of sectors to pole pairs of the motor and cost-effectively boost accuracy compared with alternative sensing technologies. Featuring total stray field immunity, the thin and light sensor also enables easier motor integration and offers the standard materials required for customers to manufacture their own resolver replacement – reducing bill of materials costs. The IPS2550 has been developed according to ISO26262 to support, as a single IC, the most challenging functional safety critical applications, capable of supporting up to ASIL-C(D) system-level requirements.

Key features of the IPS2550 include:

  • High flexibility with scalability based on the number of motor pole pairs, supporting on-axis, off-axis, and side-shaft alignment
  • AEC-Q100 qualified with stable operation in harsh environments and -40° C to 160° C ambient temperatures
  • Enhanced accuracy and production stability with sin/cos gain mismatch and offset compensation
  • Up to 600 krpm (electrical) rotational speed
To contact the author of this article, email engineering360editors@globalspec.com

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