16:1 input DC-DC ideal for rail applications

22-06-2021 | Recom International | Power

RECOM offers its 16:1 ultra-wide input high-isolation quarter-brick DC-DC converter, ideal for rail and harsh industrial applications. The input range of the RPA150-Q series is 14.4V to 170V (200V for 1s), and fully regulated available outputs are 12, 24, or 54VDC with a wide +10/-20% trim range (+18/-20% for 24V output). Efficiency is high over the operating range, and with sufficient airflow, 150W output is provided from -40C up to at least 65C for each variant or at least 75C with baseplate cooling. With derating, operation to a baseplate temperature of 105C is possible.


The product features 4.242kV/1 min reinforced isolation with safety certifications to EN/UL 62368-1 and CAN/CSA-C22.2 N0. 62368-1 up to 5500m altitude, along with functional and safety compliance to rail standards EN 50155 and EN 45545-2. EMC standards EN 55022 and EN 55011, along with EN 50121-3-2 for rail applications, can be met with external filtering. The product is fully featured with trim, remote sense, and remote on/off control. Protection includes under-voltage lockout, over-temperature, and output over-voltage/over-current.


The series will operate down to 12V and up to 200V for one second, providing for dips and surges over multiple nominal voltages from 24V to 110VDC defined by rail standards EN 50155 and RIA12, with some margin. To suit the typical high shock and vibration rail environment, the product complies with EN 61373 and includes threaded inserts for secure mounting to a PCB or bulkhead. In industrial applications, the compact quarter brick size is helpful in space-constrained designs needing a very wide input range.


“Our RPA150-Q series is ideal for rail and harsh industrial applications,” commented Matthew Dauterive, DC-DC product manager of RECOM. “The ultra-wide input range means only one part in the standard quarter-brick format can be used to cover multiple nominal inputs and their surges and transients.”

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