COSEL Power supplies Beautiful new world
Up to now COSEL has been predominantly targeting the Asian market with AC/DC converters, but for the first time the manufacturer of top quality products brings onto the market an American-European footprint, in the form of the GHA Series. A surface area of 3x5" (76.2x127mm) provides space for up to 500 Watt, at a height of less than 1U. This is achieved with a degree of efficiency of over 92%.
While 3x5" power units are by contrast usually cooled by natural convection or forced air flow, the COSEL converter offers the possibility of contact cooling without a housing. In this situation, all the critical components are contacted onto a metal plate on the underside of the board, which means that the unit can be integrated into the cooling circuit with no trouble at all. The GHA is available in 300W and 500 W formats, capable of running in parallel, and offers ancillary outputs with 5Vdc (electronics) and 12 Vdc (fan). These are additionally galvanically isolated from the main power circuit, and can therefore also be used as negative voltage.
In addition to safety approvals in accordance with cUL/EN60950, this power unit is also approved for medical applications, in accordance with EN60601-1 with reinforced isolation, and an isolation voltage of 4,000 Vac. As an option, both the 300W as well as the 500W version are available with remote on/off and Power Good signal. 12, 15, 24 and 48 Vdc are available for selection as output voltages, and can be adjusted subsequently on the spot. The additional five-year guarantee emphasizes the high quality standard which is customary with COSEL.