MoPPs isolation modular power supplies offer up to 18 outputs
Extending the QM series of 700 to 1500W modular power supplies to include up to 18 outputs, the QM8 series of AC/DC power supplies has been released by TDK Lambda. It has both medical and industrial safety certifications, making it suitable for a range of applications, including BF-rated medical equipment, test and measurement, broadcast, communications and renewable energy applications.
The QM series operating efficiency is up to 91 per cent, reducing internal heat losses, allowing the use of low speed, low audible noise fans for cooling for reliability.
Input ranges from 90 to 264V AC, 47 to 440Hz input to deliver between 1200 to 1500W output power. Output voltages range from 2.8 to 105.6V and up to eight single or dual modules can be fitted. Optional standby/signal modules can be specified with a choice of one or two standby voltages (5.0, 12 and 13.5V at up to 2A). There is also a PMBus communication interface and unit inhibit or unit enable, and an ‘AC Good’ signal.
Units can operate in ambient temperatures of -20 to +70 degree C, derating output power and output current by 2.5 per cent per degree C above 50 degree C. Overall case dimensions are a compact 200 x 63.5 x 270mm and the weight is between 2.3 to 3.4kg, depending on the module configuration.
The QM series is certified to IEC/EN/UL/CSA 60601‑1, ANSI/AAMI ES 60601‑1, IEC/EN 61010‑1 and IEC/EN/UL/CSA 60950‑1 with CE marking for the Low Voltage, EMC and RoHS2 directives.
I/O isolation is 4000V AC (2 x MoPPs), 1500V ACinput to ground (1 x MoPP) and 1500V AC (1 x MoPP) output to ground.
The QM8 has a maximum earth leakage current of 300 microA, while still complying with the EN61000‑6‑3:2007 and EN60601‑1‑2:2015 (curve B conducted and radiated) emission standards. The units also meet the EN 60601‑1‑2 and EN 61000‑6‑2 immunity standards.
To help with selection, an online configurator can present an optimised module selection with a choice of signals, leakage current and standby voltages based on the input of the desired output voltages and currents.
The QM series is covered by a seven-year warranty.