DC/DC converters drive capacitive loads up to 2200µF

17th August 2017

Mick Elliott

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Datasheet

At only 5.5mm high, the latest RECOM R1SX 1W unregulated DC/DC converters, available now at Dengrove Electronic Components, are 20% slimmer than alternative converters, and are 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% 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% 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.