Magnetic sensor use to rise in automotive motors

December 01, 2011 // By EE Times
Revenue derived from the use of magnetic sensors in automotive motors will expand by nearly 40 percent in 2012 reaching $160.3 million, according to market research firm IHS iSuppli.

While revenue growth after 2012 will moderate to single digits, the five-year compound annual growth rate from 2010 to 2015 will equate to a robust 16 percent. By 2015, magnetic sensor revenue in automotive motors will amount to $193.6 million. The automotive industry accounts for half of semiconductor magnetic sensor market revenue.

The average car make use of as many as 100 small motors, performing tasks ranging from enabling the power steering, to actuating the fans in the heating, ventilation and air conditioning (HVAC) system, according to Richard Dixon, senior analyst for MEMS & sensors at IHS.

An important driver for efficient motors is energy consumption, where fractions of a liter in fuel savings can be critical—and each gram of carbon dioxide produced as emissions is counted. Here, the trend is toward the electrification of pulley-driven motors and replacement by brushless DC motors. These efficient motors allow on-demand operation of the main powertrain components.

Use of anisotropic magnetoresistive (AMR) sensors will increase in the next five years. NXP Semiconductors is a major provider of AMR sensors, while Hall sensor IC alternatives are supplied by Micronas of Switzerland, Infineon Technologies, - Allegro Microsystems, Melexis N.V. and Asahi Kasei Microsystems.

The IHS report is entitled: “ Digital Compasses Pick up Reins of Magnetic Sensor Market .”