New DRQ-11.4/88-L48 Series DC/DC Converter Features Pre-biased Start-up which Eliminates Reverse Current Issues during System Turn On/Off

Press Release Summary:

Muratas’ 1 kW DRQ-11.4/88-L48xx series designed for RIBA offers 11.4Vout at 88 A, with a Vin range of 36 to 60Vdc, operating from 48Vdc battery systems or 54Vin networking equipment. The converter provides parallel load sharing of two or more modules with an efficiency level of 97%. It features negative logic standard configuration, remote on/off enable control and thermal performance up to +85°Celsius. The isolated DC/DC converter is ideal for networking and telecommunications infrastructure equipment, network security and routers.

Original Press Release:

Murata’s DRQ Series DC/DC Converters Deliver 1K Watts @ 97% Efficiency for Telcom & Networking Equipment Applications

Murata announces the 1 kW DRQ-11.4/88-L48 Series of quarter brick, intermediate bus, DC/DC converter modules that address the growing power requirements of high-reliability networking and telecommunications infrastructure equipment. The fully regulated DRQ-11.4/88-L48xx Series provides 11.4Vout at 88 A, with a Vin Range of 36 to 60Vdc, operating from 48Vdc battery systems or networking equipment that operates at 54Vin. This fully regulated, fixed frequency, 1 kW rated bus converter boasts an industry leading efficiency level of 97%.


  • Designed for regulated intermediate bus architectures (RIBA)
  • Parallel load sharing of two or more modules
  • Monotonic startup into pre-bias output conditions
  • Over-current & over-temperature protection
  • Stable no-load operation
  • Negative logic standard configuration (Positive logic optional)
  • Up To +85° Celsius thermal performance (With derating)
  • Remote on/off enable control
  • Fully isolated to 1500Vdc


  • Integrated baseplate design provides thermal performance and flexibility for end use thermal management
  • Supports pre-biased start-up and eliminates reverse current issues during system start and shutdown
  • Wide 2:1 input voltage range meets the requirements for 48V Battery systems in telecommunications applications


  • Networking and telecommunications infrastructure equipment
  • Communications equipment
  • Network security
  • Routers
  • Wireless base stations
  • Telecommunications switches and electronics
  • Computing equipment and other applications requiring power conversion to an intermediate bus voltage of 11.4 V

Download Spec Sheet

More from Chemicals & Gases

All Topics