The RPA50S-W is a cost-efficient 50W DC/DC converter in industry standard 1/16th brick format.

The 4:1 input range covers 24, 28, 48 or 57V nominal input voltages with tightly regulated output voltage options of 3.3, 5.0 or 12V, all with 10%/-20% trim. The modules have short circuit protection, over-voltage protection, over-current protection, under-voltage lockout and over-temperature protection and can deliver up to 50W to power demanding industrial applications from PoE, regulated DC or unregulated battery supplies.

The RPA50S-W input voltage surge capability of up to 100V reduces the need for long supply cables and the output sense pins can be used to compensate for long output cable voltage drops.

The enable pin draws only 1mA, allowing PoE PD interface controllers to directly drive the converter from the PG output. The converters use planar transformer technology to give a low profile design with an isolation voltage of 2.25kV DC/one minute (basic insulation grade). The 91% efficiency permits operation from -40 to 54°C full load, or up to 85°C with derating, using natural convection cooling only.

The fully-automated manufacturing ensures a consistent quality and performance, says the company, making the converters reliable and robust, even under highly stressful operating conditions.

They are IEC/EN/UL60950-1 certified and carry a three-year warranty. Samples are available from all authorised distributors.