Tiny 2W/3W AC/DC Converters Power Smart Buildings


New compact and energy-efficient AC/DC converters from Dengrove Electronic Components can fit inside existing cavities such as inside switch housings or behind cover plates, making them ideal for smart-building or IoT applications.

The converters can operate at up to 80% efficiency, and are available with output voltage of 3.3V, 5V, 12V or 24V, making them ideal for powering remote sensors or actuators, climate controls, touchscreen interfaces, access-control devices, wireless alarm systems, door-openers or similar equipment.

While the 2W and 3W RAC02-SE/277 and RAC03-SE/277 are offered in a compact 34 x 22 x 11mm package, the 3W RAC03-SER/277 comes in a circular package, giving extra flexibility to implement smart electronics inside small spaces.

All types carry IEC/EN60335 and IEC/EN60950 safety certifications, allowing use in household or industrial environments, and are CE marked.


No-load power consumption of 30mW is less than one-twelfth of the applicable European ErP standby power limit, which helps ensure compliance of the end product, according to the firm.

The new converters feature a wide input-voltage range of 85V-305V AC, which permits connection to any AC line voltage globally and allows equipment to withstand supply fluctuations such as surges or brown-outs. Furthermore, the output voltage is said to be highly stable, regulated within ±6% and with less than 200mV ripple.

The devices ensure safety both of equipment and users with an isolation of 3kV/1min and leakage current of less than 10µA to minimise risk of electric shock. Also included is built-in over-voltage protection and short-circuit protection with automatic restart when the fault is removed. An integrated EMI filter makes the devices comply with EN55022 Class B.

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In addition, the devices are highly reliable with a wide ambient operating-temperature range of -40°C to 85°C. They also come with RECOM’s three-year warranty.

For further details, view the full Press release.



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