Mean Well Enterprise Co. Ltd. unveiled the HSP-300 series of 300W ac-dc power supplies that combine high efficiency and low output voltage. This series includes 2.8-, 4.2-, and 5-Vdc models that can be used to power R.G.B color mode sign panel applications incorporating the latest-generation of low-voltage driver ICs. The 31mm ultra low profile and 81mm slim width design can lessen the cabinet design cost as well as the installation spacing. Moreover, the HSP-300 adopts the new circuit design topology to achieve the goal of high conversion efficiency that the performance of the whole system is enhanced, so the energy is able to be saved and the electric expense can thus be reduced. Suitable applications are expected to include indoor and outdoor LED electronic signage, LED moving signs, LED TV walls, and so on.
These power supplies operate from a universal input range of 90- to 264-Vac and include active power factor correction (PFC). The fanless design delivers efficiencies up to 87% and features a -30 to +70 degrees C working temperature range (the HSP-300 needs to be screwed onto an aluminum plate or the cabinet of the sign panel module for conduction cooling).
The leakage current is specified to be less than 1mA. The HSP-300 series includes short-circuit, overload, over-voltage and over-temperature protection. The output voltage on these conformally-coated units can be trimmed by ±10% Approvals include: UL / CUL / TUV / CCC / CB / CE. And they are covered by a three-year warranty.
