Common mode chokes suppress steering noise

Common mode chokes from TT Electronics are suitable for automotive electric power steering (EPS) noise suppression applications.

The HA19 series of common mode chokes have high performance and AECQ-200 certification, and are ‘automotive ready’ for the new generation of motor vehicles, says TT Electronics.

Every EPS system requires electromagnetic interference (EMI) control with a common mode choke (CMC) and/or a differential mode choke (DMC) serving this function.  With the growing shift to electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs), and the increased use of electronic components in automobiles, noise suppression has become increasingly important in order to ensure EMI compliance.  TT Electronics’ HA19 series common mode chokes leverage the company’s expertise in noise suppression performance in chokes; the company has supplied for EPS applications over the last 15 years.

The HA19 series is comprised of three parts with standard inductance values, ranging from 11 to 75-microH, which have been demonstrated to be particularly suitable for reducing line-conducted inference in the circuitry. The common mode chokes offer high reliability and current handling from 26.5 to 44A in a rugged construction. The operating temperature of -40 to +125 degree C and AEC-Q200 certification make the chokes practical for high stress automotive environments. The HA19 common mode chokes are lead-free and comply with EU Directive 2011/65/EU (RoHS2) requirements.

TT Electronics designs and manufactures solutions for magnetics that have a systematic adherence to the safety standards and quality required by the automotive industry. The HA19 series eliminates noise emission induced by high radiated frequencies and low conducted frequencies in system circuitry, says TT Electronics, enabling EPS system designers to improve EMI robustness, for safe vehicle operation.

TT Electronics offers design expertise in customising the HA19 to meet customers’ system requirements.

TT Electronics provides engineered electronics for performance critical applications. It works with customers in the transportation, industrial, medical, and aerospace and defence sectors

Latest News from Softei

This news story is brought to you by, the specialist site dedicated to delivering information about what’s new in the electronics industry, with daily news updates, new products and industry news. To stay up-to-date, register to receive our weekly newsletters and keep yourself informed on the latest technology news and new products from around the globe. Simply click this link to register here: Softei Registration