Mansfield, MA. Murata has announced its new wide-input-range, single-output PQC Series industrial/medical power supplies. Rated at 250 W of output power in an industry-standard open-frame 3 x 5 in. 1U footprint, this high-efficiency design can deliver full power with free-air natural convection cooling up to 50°C. The PQC Series features a universal AC input voltage range from 90 VAC to 264 VAC with any input from 47 Hz to 63 Hz. The convection-cooling design employs optimal thermal management and high power efficiency up to 95%.

The PQC series is currently available in 12-V, 24-V, 36-V, and 48-V, variants, each with a 5-V standby as a standard feature. Additional output voltage variants are currently under development including a 54-V version scheduled for a June 2017 release. Featuring remote-enable, the PQC consumes less than 500 mW of power in standby mode. These power supplies can continuously deliver full output power across the wide temperature range 0°C to 50°C and up to 70°C with derating.

These supplies carry medical, consumer, and ITE safety approvals and incorporate 2XMOPP (Means of Patient Protection) isolation. With an isolation of 4000 VAC (input to output) or 1,500 VAC (input to PE), these units are suitable for powering equipment such as ultrasound monitors, blood pressure monitors, incubators, ECG equipment, and operating tables.

Where an application requires more power or redundancy, the droop-current-share characteristic enables two or more power supplies to operate in parallel to increase output current capability and flexibility.

The PQC250 complies with major international IEC/EN/UL 60950-1 safety standards and EMI to EN 55022, Class B.

The PQC’s advanced design delivers an EMI performance to Level B conducted and radiated emissions.

Murata offers convection-cooled 250-W AC/DC supplies
Rick Nelson
Rick became Executive Editor for EE in 2011. Previously he served on several publications, including EDN and Vision Systems Design, and has received awards for signed editorials from the American Society of Business Publication Editors. He began as a design engineer at General Electric and Litton Industries and earned a BSEE degree from Penn State.