Tumbler Technologies + TRUMPower launched the TWM360A series ac/dc switching power supply that meets BF (body floating)-rated output requirements. It suits medical applications, is capable of delivering 360-W continuous output power with 20-cfm forced air or 250 W using convection cooling. The power supply is an open-frame PCB in a 1.18-in. profile and 4 x 6-in. footprint.

The power supply series includes five single-output models (12, 24, 28, 48, and 54 V), each with an earth leakage current of 0.95 at 115 Vac, >0.9 at 230 Vac. The series can withstand voltage of 5,656 Vdc from input to output, 2,121 Vdc from input to ground, and 2,121 Vdc from output to ground. Units have remote control inhibit function and 2 x MOPP primary to secondary isolation, in addition to main output and standby power-on indicators. Standard output connector is a six-pole screw terminal block. For 24-V and up output models, there is an optional JST P/N B10P-VH-B output connector. It operates from 0°C to 70°C ambient with derating of 2.5%/°C from 41°C to 70°C at convection; 2.5%/°C from 51°C to 70°C, 1%/°C from –20°C to 0°C at 20 CFM forced air cooling. It is approved to the latest medical standards, including UL/IEC/EN 60601-1 (Edition 3.1), ANSI/AAMI ES 60601-1 (2012), CAN/CSA-C22.2 No. 60601-1 (2014), and UL/IEC/EN 60950-1 (2nd edition) ITE standards.