XP Power Announces New Configurable Power Supplies
XP Power plc has announced its next generation of configurable power supplies that enables the company to offer a substantial choice of customized power solutions from 400 to 2200 Watts, with samples available in 24 hours. The fleXPower family of ac-dc power supplies has been designed to deliver class-leading power density in packages 25% smaller by volume than many other products in the market. At the same time, a host of features has been added: flexible series and parallel connectivity between units of different power levels, full medical and industrial approvals for safety and EMC, up to six outputs from 3.3 to 150Vdc from a universal ac (85 to 264V) or dc (120 to 370V) input, floating controls and signals, field replaceable fans, an advanced logic interface, and an extended operating temperature range from -20°C to +70°C.
This additional flexibility will widen the appeal of configurable power supplies for electronic systems, particularly as the extra functionality and improved power density are offered at a reduced cost over earlier models. The ability to interconnect units of different power levels enables system designers to closely specify the power level they need for each application without paying for excess power capabilities. This cuts overall system cost and improves efficiency. Greater system reliability is thereby achieved.
Each fleXPower configurable power supply consists of a chassis for the required power level in which there are 10 slots in models rated up to 700W, and 12 slots for the 900W versions. An extra 200W of power is available from all chassis at high line input enabling the highest power chassis to provide 1100W under these conditions. 2200W units consist of two 1100W units combined. The increased output from high line input enables the power density to reach 7.3W per cubic inch. Individual plug-in modules are selected to build the power supply to the required rating and output configuration. Single output modules with the same voltage can be paralleled to obtain increased output current and these modules can be in completely separate fleXPower power supplies, if necessary, with their outputs connected directly together and current share connections made. To obtain alternative output voltages, modules can be connected in series for up to 150Vdc output. All outputs are adjustable by ±10%.
Units can be specified as industrial or medical types. Industrial versions meet EN61010/UL61010 and EN60950/UL60950. Medical versions meet EN60601-1/UL60601-1 and IEC60601-1-2 2nd edition. All versions, medical or industrial, meet their respective levels for leakage current, isolation and electromagnetic compatibility (EMC). Field replaceable fans mean that service inventory requirements can be minimized and, should a fan fail, the unit can be repaired quickly at minimal cost. Floating signals improve design flexibility allowing them to be configured active high or active low by the user. Standard signals check the presence of input voltage, global output voltages, individual module output voltages, and current sharing status. Inhibit or enable signals are available for the whole power supply and for each module. Remote output voltage programming is also possible.
The efficiency of fleXPower units varies with each configuration but is typically 85% at full load. Over-voltage protection is fitted to all modules and operates between 115% and 130% of nominal. The unit is fitted with over-temperature protection and all modules are overload and short circuit protected while line and load regulation are better than 0.1% and 1% respectively. Maximum ripple and noise are 50mV or 1% peak-to-peak at 20MHz bandwidth.
