TT Electronics’ common-mode chokes serve automotive EPS noise suppression

March 7, 2018

Woking, UK. TT Electronics, a global provider of engineered electronics for performance-critical applications, today at APEC launched the HA19 Series common-mode chokes for use in electronic power-steering (EPS) noise-suppression applications. With high-performance and AECQ-200 certification, the HA19 Series devices are “automotive ready” for the new generation of motor vehicles, the company said.

Every EPS system requires proper EMI control with a common-mode choke (CMC) and/or a differential-mode choke (DMC) serving this function. With the growing shift to EVs and PHEVs, and the accelerated incorporation of electronic components in automobiles, noise suppression has become increasingly important in order to ensure EMI compliance.  TT Electronics’ HA19 common-mode chokes are designed with the company’s expertise in noise-suppression performance in chokes that the company has supplied for EPS applications over the last 15 years.

The HA19 Series includes three parts with standard inductance values, ranging from 11 µH to 75 µH, which have been demonstrated to be suitable for reducing line-conducted inference in the circuitry.  The devices offer high reliability and current handling from 26.5 A to 44 A (and even higher overcurrent withstanding) in a rugged construction. Their -40 to 125°C operating temperature range and AEC-Q200 certification make them suitable for high-stress automotive environments. The HA19 chokes are lead-free and comply with EU Directive 2011/65/EU (RoHS2) requirements.

The HA19 series embraces TT Electronics’ holistic approach to specialized component design to create products that are feature-rich, safe, efficient, and reliable. The result is design and manufacturing 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, enabling EPS system designers to improve EMI robustness, ensuring safe vehicle operation.

The company offers comprehensive design expertise in customizing the HA19 to meet customers’ individual system requirements.

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