Emerson DCH3 series power adapters

A series of 3 W ultra high-efficiency, wall-mount, AC-DC power adapters that meet the international efficiency Level V standard is now available.

The DCH3 series also complies with the Tier 2 energy-related products (ErP) requirements of Ecodesign Directive 2009/125/EC.

The devices have a universal 100 to 254 VAC input and generate a regulated 5 VDC output, capable of delivering 0.55 A. The adapters are primarily intended for recharging low-power, portable consumer electronic devices such as mobile phones and digital cameras.

There is a choice of six models; three are fitted with mini-USB 2.0 output connectors and three are fitted with micro-USB 2.0 connectors that are used extensively by many of the world’s mobile phone manufacturers.

Each category is available with a choice of three different AC input plugs, to suit the region of the world in which they are intended to be used.

They produce a constant voltage, constant current output and have a low safety ground leakage current of 10 µA. Protection against fault conditions includes latching overvoltage, output short-circuit with auto recover and overload limitation to less than 0.8 A.

The adapters feature a built-in CISPR 22 class B EMI filter and meet the EN55022 class B, FCC Class B and EMC89/336/EEC standards for EMI, as well as the EN55082-1 standard for electromagnetic susceptibility.