Compact 5W USB wall plug adapters meet Level VI standards

August 12, 2015 // By Graham Prophet
Power supply specialist CUI has been pro-active in issuing reminders to the equipment-building sector that cut-off dates are fast approaching, by which power supplies provided with end-equipment will have to conform to the latest “Level 6 (or VI)” standards for efficiency and standby dissipation.

The company has now announced a line of ultra-compact 5W wall plug adapters for the US, Japanese and European markets featuring an integrated USB connector. SWI5-5-N-I38 and SWI5-5-E-I38 are designed to meet the stringent average efficiency and no load power requirements mandated by the US Department of Energy (DOE) set to go into effect on February 10, 2016.

From that date, any equipment intended for sale in the USA, that delivers specific power levels from an external adaptor, must meet the new standard. Directives in Europe are expected to be updated to similar requirements in due course. The new Level VI standards aim to significantly lower the amount of power consumed when the end application is not in use or is no longer connected to the system.

With a footprint of 64.92 x 36 x 22.5 mm, CUI’s adapters are among the smallest AC-DC power supplies to integrate a USB connector. The compact design suits them for a wide range of consumer applications.

The 5W adapters both feature 5VDC single regulated outputs with a wide universal input voltage range from 90~264 VAC. The series also features no-load power consumption <0.075 W and provides over voltage, over current and short circuit protections.

Designed with input blades for North American and Japanese applications, the SWI5-5-N-I38 offers 60950-1 UL/cUL and PSE safety approvals while the SWI5-5-E-I38 with European input blades offers GS safety approvals. All models meet Class B limits for conducted and radiated emissions.

Both are available with prices starting at $5.36 (100) through distribution.


For more information on the DOE’s forthcoming Level VI regulations, see: