Fuji Electric 7MBR50SB120 | High-Integration 7-in-1 PIM for Compact Motor Drives
The Fuji Electric 7MBR50SB120 is a highly integrated Power Integrated Module (PIM) designed to streamline the development of compact and efficient power conversion systems. As a 1200V, 50A "7-in-1" module, it consolidates a three-phase input rectifier, a three-phase output inverter, and a brake chopper circuit into a single, thermally efficient package. This device is an engineering workhorse, ideally suited for small to medium-power motor drives, servo control systems, and uninterruptible power supplies (UPS) where minimizing footprint and simplifying assembly are paramount.
Technical Deep Dive: Engineering for Efficiency and Reliability
The performance of the 7MBR50SB120 is built on Fuji Electric's advanced semiconductor technology. Two key features stand out for system designers:
Optimized Trench Field-Stop IGBT Technology
This module utilizes Fuji's 4th generation Trench Field-Stop (FS) IGBTs. This technology masterfully balances the trade-off between collector-emitter saturation voltage (Vce(sat)) and switching losses. The result is a significantly lower IGBT Vce(sat), which directly reduces conduction losses during operation. For the end-user, this translates to lower energy consumption, reduced heat generation, and the potential for smaller, more cost-effective heatsinks.
High-Integration Converter-Inverter-Brake (CIB) Topology
The 7-in-1 configuration integrates seven key semiconductor functions into one housing. This isn't just about saving space; it's about performance. By co-locating the converter, inverter, and brake circuits, parasitic inductance between stages is inherently minimized. This simplifies EMC design, reduces voltage overshoots during switching, and enhances overall system reliability compared to a design using discrete components. This integrated approach, known as a Converter-Inverter-Brake (CIB) module, is a cornerstone of modern compact drive design.
Solving Real-World Challenges with the 7MBR50SB120
The technical advantages of the Fuji Electric 7MBR50SB120 deliver tangible benefits across various industrial automation applications:
- Compact AC Motor Drives: For variable frequency drive (VFD) designers, the module’s all-in-one nature dramatically shrinks the power stage footprint. This enables smaller, more versatile drives that can be integrated directly onto or near the motor, supporting the trend of decentralized automation.
- High-Performance Servo Systems: In robotics and CNC machining, precision is everything. The low losses and fast, clean switching of the 7MBR50SB120 enable superior current control, leading to smoother motion, higher torque accuracy, and faster system response times.
- Uninterruptible Power Supplies (UPS): Reliability is non-negotiable in a UPS. This module’s robust thermal performance and integrated NTC thermistor ensure stable, long-term operation. The simplified design reduces potential points of failure, guaranteeing that critical systems remain online when they're needed most.
- Welding Equipment: The module’s ability to handle high-power switching efficiently makes it a strong candidate for modern inverter-based welding power sources, contributing to lighter, more portable, and energy-efficient welders.
7MBR50SB120 at a Glance: Key Specifications
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 1200 V |
| Collector Current (Ic) @ Tc=80°C | 50 A |
| Collector-Emitter Saturation Voltage (Vce(sat)) typ. | 1.75 V |
| Maximum Junction Temperature (Tj max) | 175 °C |
| Isolation Voltage (Viso) | 2500 Vrms |
For a comprehensive list of parameters, please refer to the official 7MBR50SB120 Datasheet.
Choosing the Right Module: 7MBR50SB120 vs. Discrete Solutions
Engineers often weigh the benefits of an integrated module against a solution built from discrete IGBTs. While a discrete approach offers maximum layout flexibility, the 7MBR50SB120 provides compelling advantages for many projects. It eliminates the complex task of selecting, matching, and laying out over a dozen individual power components. This not only accelerates the design cycle but also reduces assembly costs and minimizes the risk of performance issues arising from stray inductance and thermal imbalances. For systems in the 3.7 kW to 7.5 kW range where time-to-market and a compact form factor are critical drivers, the Fuji Electric 7MBR50SB120 presents a technically superior and commercially advantageous solution over building from scratch. For those familiar with Fuji Electric's portfolio, this module provides a step-up in integration from a standard 6-pack IGBT module by including the input rectifier and brake chopper.
If your application requires different specifications or a higher power rating, you can Explore More IGBT Modules in our extensive portfolio. For pricing and availability of the 7MBR50SB120, please Contact Us for a Quote.
