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Utilizing the latest in technology development, Murata’s DC-DC converters are able to cover a wide range of battery input voltages from 9V to 160V DC in a single module (with input voltage ratios up to 10:1). Specific nominal battery input voltage range converters are also available. Products are suitable for both on-board and trackside rail applications, as well as industrial/manufacturing and farming equipment and the automotive industry.

Murata's IR series for transportation applications

IRH - 150W half brick IRH_bfdea77b2af496e437e116fb825cd021d2458284.jpgIRQ - 100W quarter brick


IRE - 120W eighth brick

IRE_d0731db9b2ea4957b42480bae4d23ab1b8146bb6.jpg IRS - 50W sixteenth brick



  • 1/2, 1/4, 1/8 and 1/16 brick formats
  • Input voltage ranges from 9-160V
  • Stable no-load operation
  • -40°C up to 85°C (ambient) and 110ºC (case) operating temperature
  • Baseplate and flange package options
  • High efficiency - up to 91.5%
  • 3.3V, 5V, 12V and 24V output
  • Tight line and load regulation
  • 3000V RMS input/output isolation
  • Dipped varnish coating


  • Baseplate machined from a single block of aluminium
  • Thermal interface materials are of the highest quality and thermal conductivity
  • Plastic components are made from engineered plastics with temperature ratings >300°C
  • Conformal coating with Cytec CE-1171 – which is qualified to meet IPC-CC-830B



  • Travellers’ cabin - Infotainment, Lighting, Air conditioning, Smoke alarm
  • Facilities - Door opening control, Washrooms, Passenger counter, Smart sand Public address system
  • Driver’s cabin - Cab radio, Displays, Wipers, CCTV, Headlights
  • Propulsion - Braking, Axle monitor, Drive control, PTC, Sensor
  • Trackside - Signaling, Level crossing, Communications, Lighting, Thermal rail


IRV300 series

  • 16V – 160V DC 10:1 input range
  • 300W output power
  • 12V, 24V, 48V outputs
  • EN50155 compliant
  • +/- 10% adjustment
  • OR-ing option
  • Over temp, over voltage, over current protection
  • Fully enclosed for chassis mounting


IRH/IRQ w80 series

  • 16V – 160V DC 10:1 input range
  • 250W 1/2 brick or 100W 1/4 brick option
  • Hold-up function pin
  • -40°C to +100°C temperature range
  • 12V, 24V, 48V outputs
  • Under voltage lockout feature
  • Remote sense
  • +/-10% adjustment range
  • Extremely high efficiency
  • EN50155 compliant


Evaluation boards

  • EMC filtering (EN50155)
  • Output adjustment
  • Cage clamp connectors
  • LED indication
  • Remote on/off
  • Full signals interfacing
  • Hold-up


Ultra-wide (10:1) input DC-DC power

By utilizing proprietary technologies and our component selection process, Murata has developed a range of ultra-wide (10:1) input voltage ratio, DC-DC converters, in both component ‘brick’ style format and standalone fully EN50155 compliant and chassis mount solutions.

These converters have been designed to satisfy and exceed the full range of battery voltages as defined by EN50155 (see table) for nominal inputs of 24V, 28V, 36V, 72V, 96V and 110V with one single device while also maintaining high efficiency across the full input voltage range.


Murata is a leading manufacturer of electronic components, modules, and devices. The complete range includes ceramic capacitors, resistors/thermistors, inductors/chokes, timing devices, buzzers, sensors and EMI suppression filters. Whilst the company is known as a global ceramic capacitor manufacturer, it is also a world leader in Bluetooth® & WiFi™ Modules, board-mount DC-DC converters and is a key manufacturer of standard and custom AC-DC power supplies.