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QM8B – 2000 W modular power supplies with up to 18 outputs
Power Supplies

QM8B – 2000 W modular power supplies with up to 18 outputs

TDK-Lambda announces the introduction of the 2000 W rated QM8B series of AC-DC power supplies with the capability of providing up to 18 outputs.  This further extends the QM modular power supply series to now cover 550 W to 2000 W.  Like all the models in the QM series, the QM8B features low acoustic noise and full MoPPs isolation.  With both medical and industrial safety certifications, the QM8B addresses a wide range of applications, including BF rated medical equipment, test and measurement, broadcast, communications and renewable energy.

Accepting a wide-range 90-264 Vac 47-440 Hz input, the QM8B can deliver 1500 W output power or 2000 W with a high line input of 180-264 Vac.  Available output voltages range from 2.8 V to 105.6 V 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 V, 12 V and 13.5 V at up to 2 A), a PMBus™ communication interface and unit inhibit or unit enable, and an AC Good signal. 

The units can operate in ambient temperatures of -20°C to +70°C, derating output power and output current by 2.5% per °C above 50°C.  Overall case dimensions are a compact 200 x 63.3 x 268mm (W x H x D), and the weight is between 2.3 to 3.4kg, depending on the module configuration.

The QM series operating efficiency is up to 91%, reducing internal heat losses, allowing the use of low speed, low audible noise fans for cooling.  This provides an enhanced patient/user experience and increased reliability.  The QM series is covered by a seven-year warranty.

The QM series is certified to IEC/EN/UL/CSA 60601-1, ANSI/AAMI ES 60601-1, IEC/EN 61010-1, IEC/EN/UL/CSA 60950-1 and IEC/EN/UL/CSA 62368-1 with CE marking for the Low Voltage, EMC and RoHS Directives.  With an input to output isolation of 4000 Vac (2 x MoPPs), 1500 Vac input to ground (1 x MoPP) and 1500 Vac (1 x MoPP) output to ground, the series can be used in BF rated medical equipment.  The QM8B has a maximum earth leakage current of 300µA, 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 EN60601-1-2 and EN61000-6-2 immunity standards.

Product selection is made simple with an online configurator, giving an optimised module selection with a choice of signals, leakage current and standby voltages.  Upon entering up to 18 output voltages and currents, the configurator will automatically produce a unique 7-digit code for easy order placement and quick delivery.

For more information please contact Accutronics or visit the TDK-Lambda website.