TDK expands modular power supply line

By Alix Paultre, contributing editor

TDK Corp. has introduced the QM8 series of AC/DC power supplies, extending the QM series of 700-W to 1,500-W modular power supplies to include up to 18 outputs. Having both medical and industrial safety certifications, the QM8 addresses a wide range of applications, including BF-rated medical equipment, test and measurement, broadcast, communications, and renewable energy applications.

With an operating efficiency of up to 91%, reducing internal heat losses and allowing the use of low speed and low audible noise fans for cooling, the QM series is covered by a seven-year warranty. Accepting from 90 VAC to 264 VAC at 47 Hz to 440 Hz, the QM8 can deliver between 1,200 W and 1,500 W of output power. 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, 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 degree Celsius above 50°C. Overall case dimensions are 200 × 63.5 × 270 mm. The supplies weigh between 2.3 and 3.4 kg, depending on 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 RoHS 2 Directives.