6 W high isolation DC-DC Converters support insulation to UL60950.

Press Release Summary:

Available in MGJ6HB, MGJ6FB, and MGJ63P models, DC-DC converters feature dual, triple, and quad output voltages for IGBT/SiC & Mosfet gate drives in half bridge configuration. Offering 15pF coupling capacitance, converters operate with 5 V, 12 V and 24 V input voltages. Suitable for DC link voltage up to 3kVDC, units featured characterized dV/dt immunity of 80kV/microsecond at 1.6kV and operated 105°C temperature.

Original Press Release:

Efficient 250W Murata’s Miniaturized DC-DC Converters are Single Device Solutions for Powering IGBT Gate Drive Circuits Cooled Quarter-Brick DC-DC Converter

Efficient 250W Murata’s miniaturized DC-DC converters are single device solutions for powering IGBT gate drive circuits cooled quarter-brick DC-DC converter

Murata has released three series of 6W high isolation DC-DC converters from Murata Power Solutions which, in the form of single devices, are able to provide all gate drive power for half, full, and three-phase bridge circuits, saving space and cost while providing optimum performance.

Murata’s MGJ6HB, MGJ6FB, and MGJ63P series DC-DC converters are for simultaneously powering “high-side” and “low-side” gate drive circuits for IGBTs, and silicon/silicon carbide MOSFETs in bridge circuits. The devices feature respectively dual, triple, and quad independent outputs that are externally configurable with a simple circuit to provide positive and negative voltages for gate drive power. By being able to use just one device for powering all gate drives in a bridge application, the space saving achieved is a significant 33–50%. For example, in a three-phase bridge, the four-output MGJ63P provides isolated power for the three high-side switch drivers and a common rail for the three low-side switch drivers, potentially replacing up to six discrete DC–DC converters.

The DC-DC converters offer a wide 2:1 input voltage range with nominal inputs of 5V, 12V, and 24V and two, three, or four output channels of 24V are provided with high isolation between outputs. Exhibiting versatility, outputs can also be connected in parallel or series. Providing reliable operation in the fastest of switching systems, the devices are suitable for DC link voltages up to 3kVDC and feature a characterized dV/dt immunity of 80kV/microsecond and a characterized partial discharge performance that provides long service life.

The design of the DC-DC converters includes many inherent features and aspects that enhance performance, reliability, and repeatability. These include a planar transformer, short circuit and overload protection for robust operation under system fault conditions, and a very low coupling capacitance of typically 15pF that reduces system EMI problems. A frequency synchronization pin simplifies EMC filter design and an enable pin provides for power saving.

A pending application for UL60950 recognition for reinforced insulation will reduce the overall cost of system approval. Similarly, approvals for ANSI/AAMI ES60601-1, two MOOPs, and two MOPPs at different system voltage levels are pending and when attained will simplify system approval for medical applications.

None of Murata’s competitors offers this type of targeted application solution with such features as high isolation construction, high-efficiency electronics, and planar magnetics.

Features

• No opto feedback
• Patents Pending
• Two, three, or four isolated output voltages for IGBT/SiC & Mosfet gate drives in half bridge configuration
• Reinforced insulation to UL60950 with 8 mm creepage & clearance recognition pending
• ANSI/AAMI ES60601-1 recognition pending
• Characterized dv/dt immunity 80kV/μs at 1.6kV
• Characterized partial discharge performance
• 5.2kVDC isolation test voltage “Hi Pot Test”
• Ultra-low coupling capacitance typically 15pF
• DC link voltage 3kVDC
• 5V, 12V, & 24V input voltages
• 105°C operating temperature

Further editorial information from:

John Sutherby

General Manager, Marketing Communications

Murata Electronics

Tel: +1-508-964-5117

e-mail: jsutherby@murata.com

Contact details for publication:

Murata Power Solutions, Inc.,

11 Cabot Boulevard Mansfield, MA 02048-1151, USA

Tel: +1-508-339-3000 Fax: +1-508-339-6356

e-mail: muratapr@murata-ps.com

About Murata Power Solutions

Murata Power Solutions (www.murata-ps.com) is headquartered in Mansfield, Massachusetts, with over 1,300 employees worldwide. Murata Power Solutions designs, manufactures and distributes DC-DC Converter, AC-DC Power Supply, Magnetic and Digital Panel Meter product lines, and offers these products in custom, standard and modified-standard variations. Murata Power Solutions products are typically used within electronic applications serving major global market sectors including telecommunications, computing and industrial controls.

Murata Power Solutions is a division of Murata Manufacturing Co., Ltd. (www.murata.com), a worldwide leader in the design, manufacture and sale of electronic components and power supply modules. Murata's devices are found in a wide range of applications including consumer and automotive electronics, and wireless devices. The company has employees and manufacturing facilities throughout the world.