2W Bipolar Output SMT DC-DC Converters Address High-Voltage Gate Driver Applications

  • Power Devices

26/05/2021

Murata Manufacturing Co., Ltd.
President:
Norio Nakajima

Murata has added to its expansive range of advanced power solutions, with a new series of surface mount DC-DC converters. Comprised of 9 different models, the lightweight units in the MGJ2 series each have a 2W power rating and are supplied in compact, low-profile form factor modules with 19.49mm × 14.99mm × 4.39mm dimensions. They are intended to accompany the IGBT and SiC-based MOSFET high-voltage gate drivers used in industrial, renewable energy and mobility applications. Available in input versions that accommodate the commonly-used 5V (in development), 12V and 15V voltage rails, they feature +15V/−5V, +15V/−9V and +20V/−5V bipolar outputs.

The new MGJ2 DC-DC converters exhibit an ultra-low isolation capacitance of just 3pF (typical). This helps them to mitigate the coupling of transients across the isolation barrier and prevent EMI issues from occurring due to circulating currents generated by high frequency signals. Their characterised partial discharge performance means that elevated levels of operation can be maintained despite the demanding nature of the high-voltage applications they will be used in. Likewise, the common-mode transient immunity (CMTI), which exceeds 200kV/µs, allows them to deal with high switching frequencies.

Other key attributes of the MGJ2 units include a continuous barrier that withstands voltage that reaches 2.5kV (also tested to cope with 5.7kVDC for a 1 minute period), plus 9mm creepage and clearance separation distances. An extended operational temperature range of −40°C to +100°C is supported, and they have built-in short circuit protection mechanisms too. UL62368 compliance (for 250VAC reinforced insulation) has already been secured, with ANSI/AAMI ES60601-1 certification currently pending.

These DC-DC converters are intended for implementation within industrial motor drives, solar and wind turbine inverters, uninterruptible power supplies (UPSs) and fast EV charging stations.

Murata in Brief

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata's website at www.murata.com