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Power Electronics
Image courtesy of Powerbox
<p>(Image courtesy of Powerbox).</p>

High Efficiency Power Modules Deliver Power in Slim Packaging

Powerbox has announced the launch of two new products in its Railway dc/dc power converters ENAR150D series. The products perform at 93% high efficiency, saving energy, reducing power dissipation and allowing more power available in confined environment. The new series includes an extensive set of accessories, simplifying power integration into trains and related vehicles.

Railway modernisation and introduction of new technologies such as on board WI-FI, GSM and LTE, and video systems and telemetry require very efficient and flexible power solutions, which the ENAR150D series has been specifically designed for. Combining high efficiency power switching and optimized topology to reduce component count by 25% compared to conventional topologies, contribute to improve the MTBF (Mean Time Between Failure) and to the long-term reliability.

Developed for low profile applications and efficient conductive-cooling, the ENAR150D series employs the latest planar-on-board technology, improving power dissipation and robustness towards shocks and vibration. The two new products, ENAR150D24 and ENAR150D110 deliver 150W output power, with a typical efficiency of 93% and are housed in slim packaging of 18.5mm (0.73") width, making possible to integrate the power modules in tight and confined environments.

Designed to operate from 24VDC (16.8 - 30VDC) or 110VDC (77 - 137.5VDC), the ENAR150D24/2x12 and ENAR150D110/2x12 feature dual isolated 12V outputs that can be combined in four different modes, independent, parallel, serial and symmetrical, to accommodate the final application requirements. In Independent mode, the two 75W isolated outputs deliver 12V / 6.25A each. When connected in Parallel mode the output provides 150W, 12V / 12.5A.

If a higher output voltage is required to power intermediate bus voltage to embedded system, the Serial mode offers 24V / 6.25A. The fourth alternative, Symmetrical mode, provides a +/- 12V output, +/- 6.25A with a common zero. In cases where additional power is required, the ENAR150D series can be connected in parallel, without adding any external component, using passive current sharing technology. 

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