20 per cent slimmer 1W surface-mount isolated converter, certified to new international safety standard

At only 5.5mm high, the latest RECOM R1SX 1W unregulated DC/DC converters, available now at Dengrove Electronic Components, are 20 per cent slimmer than alternative converters, and are conveniently packaged as compact, 12.75mm x 10.8mm, surface-mount, open-frame modules.

In addition to satisfying EN 55022/024 and IEC/UL/EN 60950-1, the modules are certified to the incoming IEC/UL/EN 62368-1 safety specification. IEC 62368-1 introduces a new hazard-based approach to safety engineering that gives designers extra flexibility to demonstrate compliance, and is expected to replace the established IEC 60950-1 rules.

R1SX converters can drive capacitive loads of up to 2200µF, which is 40 times higher than comparable alternatives. By also offering 1kVDC or 3kVDC isolation-voltage options, this series presents an ideal solution for isolating CAN-bus connections to ensure equipment safety and preserve signal integrity. They can also be used to power loads in equipment such as industrial automation controllers, without derating, over the full -40°C to 100°C temperature range.

Variants are available with 3.3V or 5V inputs, and a single unregulated 3.3V or 5V output. Capable of operating at up to 78 per cent efficiency, they also have quiescent consumption of less than 150mW thereby minimising dissipation and easing system thermal management. By adopting an industry-standard pinout, R1SX modules provide a drop-in replacement for the R1S series, with 50 per cent lower mounted height. Class A EMC compliance can be reached without external inductors, and only a simple external filter is needed to achieve Class B compliance.


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