Powerbox Announces Four New Series of Extra-wide Input DC-DC Converters for Railway and Transportation IndustryMay 23, 2018 by Powerbox
Powerbox, one of Europe’s largest power supply companies, and for more than four decades a leading force in optimizing power solutions for demanding
Powerbox, one of Europe’s largest power supply companies, and for more than four decades a leading force in optimizing power solutions for demanding applications, announces the launch of four new series of extra-wide input voltage range, 8W to 20W board-mounted DC/DC converters for railway and transportation industry. With a 13:1 input voltage range of 12V to 160V, the MAD33 (8W), MAD32 (10W), MAE35 (15W), and MAF35 (20W) have been developed to provide systems designers with a single part number that is able to power a large range of transportation industry applications (e.g. railway, industrial automation and automotive, remote radio-control), reducing inventory, time to market, and documentation.
The MAD-MAE-MAF series are all designed to meet railway specifications EN50155, EN50121-3-2, EN61373, and EN45545, as well ISO7637-2 for 24V vehicles, and EN12895 for industrial trucks and other industrial applications such as robotics. The 8W MAD33 is packaged in an industry standard DIP24 case, and the MAD32, MAE35, and MAF35 are housed in a 2x1 inch case. All four series have a typical efficiency rating of 86%, which, considering the extra-wide up to 13:1 input range, is an outstanding figure.
With the development of connected devices and the Internet of Things (IoT), the number of points-of-interaction and sensors are rapidly increasing. Systems designers are facing challenging situations by having to develop products able to operate in many different applications powered by a large range of voltages – versatility is the name of the game. As an example, the railway standard EN50155 specifies no less than six different bus voltages (24V, 37.5V, 48V, 72V, 96V, and 110V) including brownout (voltage drops) and transient surges during start-up. Considering the amount of equipment that could be connected to any of those six voltages, system designers have to be able to guarantee that their equipment will operate from 14.4V to 154V, include brownout (voltage drop down to 14.4V) and a one-second transient of 154V as specified in EN50155. With an operating input voltage range from 12V to 160V and a power rating range from 8W to 20W, the new MAD-MAE-MAF series converters from Powerbox are the Swiss army knife power solution, simplifying design while shortening time-to-market and reducing documentation and inventory.
“Time to market is very important for systems designers as is the simplicity of the sourcing/supply chains in order to reduce downtime in the case of trains maintenance or hardware upgrades. Both are driving forces behind extra-wide input range converters and we see similar demands from other industries such as industrial automotive,” said Martin Fredmark, Powerbox’s VP Portfolio Management. “Designing 13:1 input range DC/DC converters is very challenging—especially when optimizing all parameters while keeping the highest possible efficiency levels across the whole input voltage range. We are proud that our designers achieved this in the new MAD-MAE-MAF series.”
These new series of converters are suitable for low power loads and devices in railway applications such as communication devices, GSM-R phones and their docking stations, routers/Wi-Fi access points, small screens, USB charging sockets (both in-seat and driver’s cabin), sensors, and standby power for larger devices.
Available in four output voltages of 5, 12, 24, and 48V in natural convection conditions, the MAD33 delivers 8W and the MAD32 10W. The MAD33 is available in a Dual In-line Packaging (31.8 x 20.3 x 12.7 mm – 1.25 x 0.8 x 0.5 inches) and the MAD32 in an industry standard 2x1 inch packaging (50.8 x 25.4 x 10.2 mm – 2.00 x 1.00 x 0.40 inches). The 15W MAE35 and 20W MAF35 are available in three output voltages of 12, 24, and 48V and are similarly provided in 2x1 packages. All series deliver full output power in ambient temperatures up to 60 degrees C and continue to deliver power with a linear derating up to the 100 degrees C case. The MAD32, MAD33, MAE35, and MAF35 are housed in plastic cases.
Designed for ruggedized environments, the MAD-MAE-MAF series meet thermal shock and vibration requirements as specified in EN61373 and MIL-STD-810F, and they all meet the Fire and Smoke EN45545-2 standard.
All models within the MAD-MAE-MAF series feature full protection level sets including input voltage lockout, short-circuit protection, and current limiting. All units operate at a fixed switching frequency and including PI type input filters. The operating temperature range is from -40 to +85 degrees C ambient (maximum 105 degrees C case) and storage is from -55 to +125 degrees C.
The new series of converters from Powerbox meet the requirements of UL60950-1, EN60950-1, and IEC60950-1 standards, and CE mark 2014/30/EU. All products have an input to output isolation voltage of 3,000 VAC. The MAD-MAE-MAF series are RoHS compliant.
The MAD33 (8W), MAD32 (10W), MAE35 (15W), and MAF35 (20W) complement the PQB50U-72S (50W) and PFB600W-110S (600W), offering a complete range of power modules solutions, from 8W up to 600W, to railway applications and demanding industries.
Founded in 1974, with headquarters in Sweden and operations in 15 countries across four continents, Powerbox serves customers all around the globe. The company focuses on four major markets - industrial, medical, transportation/railway and defense - for which it designs and markets premium quality power conversion systems for demanding applications. Powerbox’s mission is to use its expertise to increase customers’ competitiveness by meeting all of their power needs. Every aspect of the company’s business is focused on that goal, from the design of advanced components that go into products, through to high levels of customer service. Powerbox is recognized for technical innovations that reduce energy consumption and its ability to manage full product lifecycles while minimizing environmental impact. Powerbox is a Cosel Group Company.