Murata Power Solutions MGJ6-14mm Series

MGJ6-14mm high isolation DC/DC converter

Murata has introduced a series of high isolation DC/DC converters developed by Murata Power Solutions. The MGJ6 wide, low-profile series converters feature a 14 mm creepage and clearance distance for use in reinforced-rated isolated-gate drive-power applications in higher efficiency 690 VAC industrial electrical distribution systems. They provide optimised voltages for best system performance and efficiency.

This high isolation DC-DC converter series is designed for powering high- and low-side gate-drive circuits for IGBTs and silicon and silicon carbide MOSFETs in bridge circuits used in motor control applications and industrial power installations. Rated at 6 W, the dual output converters provide a wide 2:1 input voltage range with nominal values of 5, 12 and 24 V, and with output voltages of 15/-10 V, 20/-5 V and 15/-5 V. Suitable for power applications that require a DC link voltage up to 3 kVDC, asymmetric outputs provide an optimum drive level to maintain a high system efficiency with low EMI levels. With their frequency synchronisation-capability and very low coupling capacitance, typically 13 pF, EMC compliance is easier

Murata Power Solutions MGJ6-14mm high isolation DC/DC converter

The converters’ compact design reduces board space and development time, whilst their characterised dV/dt immunity of 80 kV/microsecond gives users confidence in a long service life, and similarly the use of planar magnetics increases product reliability and repeatability of performance. Typical applications include motor drives/motion control, solar inverters, UPS, alternative energy (wind-power generators), high-power AC-DC conversion, traction, EV/HEV and welding.

The MGJ6 series converters offer an operating temperature range of -40 to 105 °C, with derating above 90 °C. Standard features of the patent protected converters include enable pin, short-circuit and overload protection, and a frequency synchronisation pin that simplifies EMC filter design. The series is pending IEC 61800-5-1 approval based on a high working voltage of 690 Vrms maximum between primary and secondary, and similarly is also pending UL approval to UL 60950 for reinforced insulation to a working voltage of 690 Vrms. As a targeted application solution featuring high isolation construction, high efficiency electronics and planar magnetics, no other manufacturer offers this type of product.

Features and benefits

 
  • UL60950 Reinforced insulation to 690Vrms recognition pending
  • IEC 61800-5-1 recognition pending
  • 14mm Creepage and clearance
  • Optimized bipolar output voltages for IGBT/SiC & MOSFET gate drives
  • Configurable dual outputs for all gate drive applications: +15V/-5V, +15V/-10V & +20V/-5V outputs
  • DC Link Voltage 3kVDC
  • Characterized dv/dt immunity 80kV/μs at 1.6kV
  • Ultra-low coupling capacitance 13pF
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