Tri-Level IGBT Module is designed for NPC circuits.

Press Release Summary:

Designed for Neutral Point Clamped (NPC) circuits, IGBT module reduces switching loss by producing waveform closer to sine wave. This is realized by integrating 3 levels of output voltage steps - IGBT, FWD, and RB-IGBT (reverse blocking IGBT) - in one 110 x 80 x 30 mm package. While model 4MBI300VG-120R-50 carries IGBT ratings of 1,200 V and 600 V and RB-IGBT rating of 300 A, respective ratings for model 4MBI400VG-060R-50 are 600 V and 400 A.

Original Press Release:

Fuji Electric Releases IGBT Module for Advanced Neutral Point Clamped (NPC) Circuits Series

Tokyo - Fuji Electric Holdings Co., Ltd. announces that its core operating company, Fuji Electric Systems Co., Ltd., has developed and commenced sample production of IGBT module for advanced NPC circuits, which dramatically lower power loss. The company launched a platform featuring a New 3-Level Converter Circuit in February last year. With the successful development of a special power module for the platform, sample production of the IGBT module for advanced NPC circuits has commenced prior to mass production.

The IGBT module for advanced NPC circuits reduces switching loss by producing a waveform that is closer to a sine wave than the conventional 2-level type module. This is achieved by expanding the number of output voltage steps to three levels. In addition, the inclusion of an RB-IGBT (reverse blocking IGBT), which is proprietary company technology, eliminates the need for a diode for blocking reverse current, thereby enabling the converter circuit to operate with greater efficiency. Furthermore, achieving a 3-level circuit in a single package not only boosts efficiency, but also contributes to a dramatic reduction in device size, which is required in the field of power source equipment, including power conditioners for photovoltaic power generation and uninterruptible power supplies (UPS).

The IGBT module for advanced NPC circuits is the first module in the world to include IGBT, FWD, and RB-IGBT in a single package for a 3-level platform.

1. Features

(1) Includes IGBT, FWD, and RB-IGBT in a single package for a new 3-level platform
(2) Employs the company's patented RB-IGBT
(3) Reduces switching loss by 50% by cutting the switching frequency that controls voltage waveform in half
(4) Optimizes internal inductance by using a single-package design

2. Outline of specifications

Product model Package dimensions Voltage rating Current rating
(millimeters) (volts) (amps)

4MBI300VG-120R-50 110 x 80 x 30 IGBT 1,200 300
RB-IGBT 600 300

4MBI400VG-060R-50 110 x 80 x 30 IGBT 600 400
RB-IGBT 600 400

3. Primary applications

The series is designed for use in power conversion equipment, including inverters, uninterruptible power supplies (UPS), and power conditioners for photovoltaic power generation.

About Fuji Electric Holdings

The Fuji Electric Group (TSE:6504) delivers maximum customer satisfaction as everything it stands for. It constantly strives to create innovative technologies that truly energize our customers' businesses. This approach is ingrained in the corporate DNA, which has been passed down unbroken as the driving force for more than 80 years. Driven by this powerful DNA, the Group's 25,000 personnel are motivated to deliver the products, services and solutions that win the support of customers wherever it operates. For more information, please visit

Customer inquiries
Power Module Department
Semiconductor Division
Semiconductor Group
Fuji Electric Systems Co., Ltd.
Telephone: +81-263-26-2513

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