MHz switching frequency-based devices enable miniaturization of the DC-DC converter and EMI filters
Achieving EMI conducted emission compliance for automobiles with a single stage filter. By Nicola Rosano, Sr. Strategic FA/System Engineer at Vicor
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A full brick package developed by TDK-Lambda, the PF1500B-360, is for high voltage distributed power architectures
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The Vishay Dale IHSR-2525CZ-5A offers a 50% reduction in DCR over typical power inductors says the company. It is available in a space-saving 2525 case size (7.4 x 6.6 x 3.0mm). It is suitable for multi-phase, high current power supplies and filters in automotive engine and advanced driver assistance systems (ADAS) applications.
It is also claimed to have “excellent” temperature stability for inductance and saturation compared to ferrite devices.
The inductor is optimised for energy storage in DC/DC converters up to 10MHz and high current filtering applications up to the self-resonant frequency (SRF) of the inductor. Operating temperature is up to 155°C, ensuring the device is suitable for filtering and DC/DC conversion in engine and transmission control units, ADAS microprocessors, and entertainment or navigation systems. It is also suitable for noise suppression in motors, windshield wipers, power mirrors and seats and heating and ventilation fans.
Typical DCR is just 0.38mΩ and inductance is 0.056µH allow for higher current density than competing technologies, says Vishay.
It is packaged in a 100% lead (Pb)-free shielded, composite construction that reduces buzz noise. It is designed to offer high resistance to thermal shock, moisture and mechanical shock while handling high transient current spikes without saturation. The device is RoHS-compliant and halogen-free.
Samples and production quantities are available now, with lead times of 12 weeks.
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