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Introducing the PQU650 Series 650W AC-DC power supplies for medical and industrial applications from Murata, samples available from Anglia

Date Published : 28/04/2022 Share with:

The PQU650 from Murata is a series of open-frame, 650 W-rated AC-DC power supplies by Murata Power Solutions. The PQU650 series offers the highest power-density product on the market, with forced air- and convection-cooled ambient ratings. The power supplies offer a multitude of standard features including wide output voltage adjustment range, auxiliary power rails and a high transient capability, at a competitive price.

Measuring just 6" x 4" by 1 U high, the power supplies accept a universal AC input voltage range of 90 VAC to 264 VAC. Utilizing the latest LLC topology results in world-class efficiency levels of up to 95%, the series maintains a high 450 W convection-cooled rating. This means there are no system fan requirements for applications up to 450 W at ambient temperatures as high as 50°C, and with as little as 300 LFM forced air-cooling, the available output power rises to 650 W at an ambient temperature of 50°C. A useful peak output ‘power boost’ rating of 800 W is available for up to 30 seconds to allow initialization of inductive and capacitive loads.

Developed for demanding industrial and medical applications, the PQU650 is an AC-DC, U-channel open-frame PSU certified to EN 60960 and IEC 60601 3rd Edition medical standards, meeting 2 x MOPP primary to secondary, and 1 x MOPP primary to chassis. An isolation figure of 4 KV AC primary to secondary, and 1500 VAC secondary to chassis are standard. The PSU’s also feature overvoltage, overcurrent, overtemperature, short circuit and reverse connection protection as standard.

The series comprises eleven models with output voltage ratings from 12 to 54 V, and current ratings from 12.1 to 54.2A. Standard features include a power OK signal, PS on and remote sense, along with an auxiliary output of 5V at 0.5A, and a fan supply output of 12V at 0.6A. An additional safety cover is offered as an optional extra, and screw output terminals or pluggable header variants are also available.

The PQU650 is ideally suited for industrial and medical applications where there are size constraints and for ‘no fan’ applications where noise and maintenance are critical. The power supplies also suited for use in transient load applications that require the PSU to provide high power for short durations.

Typical applications include, but are not limited to, communications, test equipment, signage, broadcast, automated test equipment, stage lighting, PoE, datacoms and many others.

Key Features


  • Compact high-density design
  • 4" x 6" industry standard footprint; “U” channel form factor with industry “standard” mounting footprints
  • 650W rated with forced airflow cooling & 450W with convention cooling
  • 800W “power boost” mode at output start-up for 30s
  • High efficiency of 95% typical at 50% load
  • Very low no load standby power consumption
  • Universal AC input; active PFC; EN61000-3-2 Class A
  • Voltage (+15%) adjustment of Main V1 Output
  • True zero load operation of the Main (V1) output; no minimum load requirements
  • +5VAux/Standby and 12V Fan outputs
  • Active inrush protection
  • Droop Current Share
  • MTBF 797Khrs; Telcordia SR332 Issue 3; M1 Case 3; +40°C
  • IEC60601 Ed.3 medical (2 x MOPP Pri-Sec); 1 x MOPP Pri-Chassis Ground)
  • Designed to comply with IEC60601-2 4th Edition EMC Standard Requirements in end user system


Click here for more information or to buy from Anglia Live.

Click here to download PQU650 Series Datasheet

Anglia are offering customers a FREE sample of the PQU650 Series open-frame, 650 W-rated AC-DC power supply from Murata, please fill in the form below to register for your FREE samples and evaluation kit now.




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