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Murata release PMBus 600W DOSA Compliant, Digital 1/4 Brick DC-DC Converter

Murata has introduced a series of 600W, DOSA compliant, 12V output, digital quarter-brick DC-DC converters from Murata Power Solutions. The series was designed for high reliability applications, the heart of the module is a 32-bit ARM processor that supports the latest PMBus commands for digital control and telemetry functions. The DSQ, DCQ and DAQ converters support the full ‘TNV’ input range of 36 – 75V, with a typical efficiency of 96% @ full load 48Vin.

The series is designed to support droop mode current sharing of multiple modules for increased power output with tight load sharing.  I/O Isolation is 2250 VDC, with a functional insulation system and it carries the UL/CSA safety agency approvals. Options for these modules include a digital interface supporting the latest PMBus command set, parallel load sharing, positive or negative on/off logic, along with options for standard “analog” DOSA pinout and a 5pin Bus Converter pinout.

The DSQ model includes a PMBus interface that provides a means (I2C Bus) to configure output voltage, soft start parameters, input and output over-voltage protection limits, input under-voltage lockout, current limit and thermal shutdown. Telemetry functions include output voltage and current, input voltage and temperature, as well as indications for ‘power good’ and on/off status. The heart of the module is a 32-bit ARM processor controlling all functions and parameters.

The DSQ modules are designed, tested and qualified according to the industry standard IPC9592 for reliability requirements. Electrical performance is state-of-the-art starting with an efficiency rating of 96% with 600W output power @ 55°C with no heat sink, output Pre-Bias protection under all conditions, tight line & load regulation, low output ripple & noise and fast load transient response, all packaged into an industry standard DOSA quarter brick format.
All variants include a baseplate for optimal thermal performance that also provides a surface for mounting an additional heat sink for extreme temperature applications. Safety certifications include UL/EN/IEC 60950-1 and CAN/CSA-C22.2 No 60950-1 2nd edition and the parts are compliant with EN55022/CISPR22 EMC standards with minimal input filtering.

The DSQ series DC-DC converters are suitable for a number of applications including communications & networking equipment, computing equipment, wireless base stations, PoE systems, MicroTCA, fan trays and test equipment.

Key Features & Specifications

  • DOSA Compliant Digital quarter-brick with PMBus interface
  • 36-75V Input voltage range
  • 96% Typical efficiency
  • Delivers up to 50A (600W)
  • Low output ripple and noise
  • Wide operating temperature range -40°C to +85°C
  • Optional droop load sharing of two or more modules
  • Baseplate included for improved thermal performance
  • Output over current and over voltage protection
  • Over temperature protection
  • Negative and Positive logic (Negative logic standard configuration)
  • 2250V DC I/O Isolation compliant with IEEE802.3 PoE Standards
  • Certified to UL/EN/IEC 60950-1, CAN/CSA-C22.2 No 60950-1 2nd edition, safety approval and EN55022/CISPR22 EMC standards

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

Click here to download the DSQ datasheet

Anglia are offering customers FREE samples of the DSQ series PMBus 600W DOSA Compliant Digital 1/4 Brick DC-DC Converters from Murata, please fill in the form below to register for your FREE samples now.



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