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500W, 600W DC/DC converters support PMBus digital interface

Posted: 05 Jan 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Murata? PMBus? DC/DC converter? power module?

Murata Power Solutions has introduced a series of single output digitally controlled 500W and 600W DC/DC converters that integrates a 32bit ARM7 processor. According to the company, the 600W DRQ-12/50-L48 and 500W DRQ-12/42-D48 models are the second product families offered by Murata Power Solutions to include a PMBus compatible digital interface.

Both units are packaged in an industry standard quarter-brick format that will support the evolving advanced bus converter (ABC) footprint for isolated board mounted power modules. The L48 module has a 12VDC, 50A output, accommodates an input voltage range from 44-57VDC and is geared for intermediate bus applications (IBA) with a tightly controlled power source.

DRQ-12/50-L48, DRQ-12/42-D48

The D48 converter provides an 11.5VDC, 43.5A output and supports the TNV 2:1 wide input voltage range of 38-75VDC. These highly efficient units, typically 95.5 per cent, run much cooler than less efficient units making them ideal for use in modern space constrained telecoms and data networking equipment, noted Murata. Typical applications include MicroTCA, servers, storage, networking equipment, POE applications, wireless networks along with industrial applications and test equipment.

The PMBus interface facilitates power management features not previously available in an isolated power module rated at 500-600W in a 1/4tr brick format. By interfacing the DRQ module to the system's I2C bus a system engineer can monitor critical system level performance requirements that include Vin, Iin, Vout, Iout and operating temperature. The PMBus can also be used to set warning flags for temperature, Vin, Vout, Iout and allows the user to customise parameters such as Vout, Vin Turn on/off thresholds, output overvoltage protection and output current limit and ramp-up characteristics to name a few. Also, in applications where additional output power is required or to build redundancy into the power architecture, two or more converters can be connected in parallel.

The DRQ series has been designed to meet the growing industry demand for more efficient, higher power DC/DC converters that require tight controls and critical monitoring capabilities for high reliability applications.

Samples are available from stock. Lead-time is 12-14 weeks. Pricing in OEM quantities is $50 for the DRQ 500W and $55 for the DRQ 600W.

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