Power supply reference designs solve railway specific EMC and RIA12 surge-protection challengesAugust 22, 2019 by RECOM
This article features RECOM R-REF04-RIA12-1 board targets high-voltage applications up to 110V, while the R-REF04-RIA12-2 is for DC input current up to 10A.
Two new RECOM railway power supply reference designs, available now at Dengrove Electronic Components, solve engineering challenges including filter layout for EN 50121-3-2 EMC compliance and surge prevention meeting the UK RIA12 specification.
The R-REF04-RIA12-1 board targets high-voltage applications up to 110V, while the R-REF04-RIA12-2 is built to handle DC input current up to 10A. Both are input-side fused and can be used with single-output DC/DC converters up to 45A. The boards feature a universal pinout for 2” x 1”, quarter-brick and half-brick standard case sizes, giving users the flexibility to choose from converters of various power ratings up to 240W.
RIA12 surge protection is provided using an active input-voltage clamp featuring a surge-stopper IC, which acts quickly to block surge voltages up to 385VDC. The clamp circuit also provides inrush current limiting. The boards provide a nominal value of hold-up capacitance, with connectors to add extra capacitance if required. The input, output, and hold-up connections feature easy-to-use cage-clamp terminals, and there are isolated connections for fan power and system enable.
Dengrove is now stocking the reference boards as well as a broad selection of applicable RECOM DC/DC converters, and can provide selection advice to support customers’ projects.
The RECOM group is a power supply manufacturer from Austria with over 45 years of experience in developing and manufacturing the latest converter technology in a power range from 0.25W to 960W. Worldwide customers have access to the largest selection of DC/DC converters and AC/DC power supplies on the market plus a broad range of switching regulators and LED drivers, all of which comply with international safety standards and carry the latest certifications.
RECOM has offices in Europe, North America and Asia, enabling the sales and support team to quickly offer worldwide technical support. The global network of distributors ensures fast delivery times, and worldwide product availability.