SMD power inductors for demanding automotive applications

1st October 2018
Alex Lynn

A range of moulded inductors designed with the latest composite moulded core materials to maximise inductance, temperature performance and saturation current while minimising DC resistance and physical size, has been launched by TT Electronics with the the HA72L series.

The result is a compact, surface mount component that operates in demanding environments with saturation currents up to 80A.

Mechanically robust, magnetically shielded and resistant to corrosion in humid environments, the inductors are well suited for high power density automotive applications where size is critical and AEC-Q200 performance is specified. Such applications include high efficiency DC/DC converters using high switching frequencies to 3MHz as well as EMI and low pass DC ripple filters in high temperature environments where these moulded inductors deliver clean power in a small, lightweight surface mount package.

Amongst the main target applications for the HA72L series are LED drivers, automotive LCD/LED displays, engine and transmission control units, diesel injection drivers, DC/DC converters for entertainment/navigation systems, noise suppression for motors, braking, windshield wipers, power steering, seats and mirrors, heating and ventilation blowers.

TT Electronics’ rugged HA72L is magnetically shielded, can handle high transient inrush current spikes and has been designed for a maximum operating temperature range of -55 to +155°C. The inductors come in sizes ranging from four by four millimetres up to 17x17mm, featuring an inductance range from 0.1 up to 100uH, a heating current range from 1.2 up to 60A, and a frequency range from 1kHz up to 3MHz. All components are halogen and lead-free.

RoHS compliant and AEC-Q200 certified, TT Electronics' HA72L series inductors will be of interest to automotive industry system designers, component engineers and design engineers, and also for use in industrial applications including switch mode power supplies, automation systems and DC/DC converters.

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