Configurable DC-DC Converters for IGBT and MOSFET Gate Drive Applications

Murata Power Solutions has announced the MGJ3 and MGJ6 series of configurable output voltage, high isolation dc-dc converters. These 3-Watt and 6-Watt surface-mounted devices are optimized for use as high-side and low-side gate drivers in IGBT and MOSFET bridge circuit designs. Providing triple output voltages of +15, +5 and +5 Vdc, these converters provide optimum switching of IGBT drives for best overall system efficiency. In addition, the outputs are configurable to suit a number of different circuit requirements such as +15 and -5 Vdc or +20 and -5 Vdc.

Both the MGJ3 3-Watt and the MGJ6 6-Watt converters are available with a choice of wide input voltages around nominal +5, +12, or +24 Vdc inputs. The input ranges are 4.5 to 9 Vdc (+5 Vdc nominal), 9 to 18 Vdc (+12 Vdc nominal) and 18 to 36 Vdc (+24 Vdc nominal).

The MGJ3 measures 23.11 x 22.61 x 14.65 mm and the MGJ6 is 31.24 x 22.61 x 14.65 mm. Both series can operate over the wide temperature range from -40 to +105 degrees C. Short circuit and overload protection features ensure a robust operation during system fault conditions. Other control inputs include a disable pin to facilitate power saving and a frequency synchronization input that aids EMC filter design.

Typical applications for the MGJ series include use in motor drives, traction control drives, and wind turbine generators. Lead-time is from stock to 10 weeks. Pricing in OEM quantities is US$11.20 for the MGJ3; for the MGJ6, US$14.70.