New ams Position Sensors for High-Speed Electric Motors to Improve Car Industry's Electrification Efforts
June 03 2020 - 11:30AM
Dow Jones News
ams (SIX: AMS), a leading worldwide supplier of high performance
sensor solutions, introduces new position sensors that lower system
cost and enhance electrification of safety-critical vehicle
functions such as power steering, active damper control, and
braking for safer, smarter, and greener cars.
The two new position sensors bring new benefits and a lower
system cost to the automotive industry. The ams AS5147U is an
intelligent magnetic rotary position sensor chip for use in
electric motors that run at speeds up to 28,000rpm. The new AS5247U
is a dual stacked-die version, which provides the redundancy
required for the most demanding ASIL D-rated functional safety
applications.
These new products respond to the automotive industry's efforts
to build safer, smarter, greener vehicles:
-- Enable more efficient operation of high-speed motors. The sensors
incorporate new DFS(TM) (Dynamic Filter System) technology for more
accurate, low-noise position measurements at rotation speed. The DAEC(TM)
(Dynamic Angle Error Correction) technology in the sensors enables almost
zero latency at high speed, for ultra-accurate, real-time angle
measurement. This combination is unique to ams.
-- Embed a comprehensive set of self-diagnostic features to support
automotive manufacturers' programs for complying with the strict
specifications of the ISO 26262 functional safety standard. The new
AS5x47U sensors also implement cyclic redundancy check (CRC) protection
on communications with external devices.
-- Lower the cost of implementing motor control -- all ams position sensors
are inherently immune to interference from stray magnetic fields thanks
to their patented differential sensing architecture. With ever more
components radiating magnetism, the sensor requires no shielding to
protect it from external magnetic fields induced by charging stations,
motors, solenoids, high-voltage cabling, and other sources.
-- Enable smaller, more reliable motor systems reducing cost of materials
and of production.
-- Enhance the ams position sensors' Digital Signal Processor (DSP) core
which performs measurement processing inside the chip. Measurement
outputs in standard UVW, ABI and PWM formats are easy for automotive
designers to implement in new, smarter vehicle control systems.
Alexander Rensink, Manager of the Position Sensors business at
ams, said:
"Advanced electrification means valuable reductions in the
environmental impact of next-generation vehicles -- and is one of
the key steps the automotive industry is taking to make cars
greener. The latest position sensor technology from ams helps the
industry to accelerate the implementation of electrification
through easy-to-use position measurements that maximize torque and
efficiency in high-speed motors."
Ready-made measurement solution
The AS5x47U products are highly integrated position measurement
solutions incorporating magnetic sensor elements, analog signal
conditioning and a powerful DSP-based processing engine. The
sensors provide a choice of convenient output formats:
-- ABI incremental outputs (industry standard), now in a higher 14-bit
resolution vs. 12-bit outputs from earlier versions of the AS5x47 family
-- UVW outputs for implementation in the commutation scheme of a brushless
DC (BLDC) motor.
-- Digital PWM signals which, can be handled directly by an external
microcontroller or microprocessor.
-- High-speed standard serial peripheral interface (SPI) now protected by
8-bit CRC.
The AS5147U sensor comes in a compact 14-lead TSSOP package. The
dual-die AS5247U is equipped with a 7mm x 7mm 32-lead TQFP package.
Both sensors are qualified to AEC-Q100 Grade 0.
The AS5147U and AS5247U position sensors are available now in
production volumes. For more technical information or to request
samples, go to https://ams.com/as5147u and
https://ams.com/as5247u.
View source version on businesswire.com:
https://www.businesswire.com/news/home/20200603005359/en/
CONTACT: Amy Flécher
Vice President Marketing Communications
press@ams.com
ams.com
SOURCE: ams
Copyright Business Wire 2020
(END) Dow Jones Newswires
June 03, 2020 11:15 ET (15:15 GMT)