Fuji Electric 7MBR100U2B060-50 | Compact 7-Pack IGBT for High-Efficiency Motor Control
The Fuji Electric 7MBR100U2B060-50 is a highly integrated Power Integrated Module (PIM) designed for engineers developing compact and efficient three-phase power conversion systems. This module encapsulates a complete Converter-Inverter-Brake (CIB) topology, providing a robust, all-in-one solution that accelerates design cycles and enhances system reliability for applications up to approximately 30 kW.
Product Highlights: The Engineer's Advantage
- System-in-a-Package Design: Integrates a three-phase converter bridge, a three-phase inverter, and a brake chopper into a single compact housing. This significantly reduces PCB footprint, minimizes stray inductance, and simplifies assembly.
- Optimized for Low Losses: Utilizes Fuji's advanced U-series (4th generation) Trench Gate Field-Stop IGBT technology, delivering a superior balance between low collector-emitter saturation voltage (VCE(sat)) and minimized switching losses.
- Enhanced Reliability: Features a built-in NTC thermistor for precise, real-time temperature monitoring, enabling robust over-temperature protection schemes.
- Robust Construction: Built on a high-conductivity copper baseplate with an Alumina (Al2O3) DCB substrate, ensuring excellent thermal transfer and high electrical isolation.
Application Scenarios & Engineering Value
The intelligent integration of the 7MBR100U2B060-50 provides tangible benefits across several demanding applications. It isn't just a component; it's a solution to common engineering challenges.
- Variable Frequency Drives (VFDs): For general-purpose motor drives, the all-in-one CIB configuration is a game-changer. It streamlines the power stage design, reducing component count and potential points of failure. The integrated brake chopper is essential for managing regenerative energy during motor deceleration in applications like conveyors and elevators, preventing DC bus overvoltage.
- Robotic Servo Drives: Precision is paramount in robotics. The fast and soft-switching characteristics of the U-series IGBTs within this module allow for smooth, high-fidelity current control, which translates directly to more accurate positioning and motion profiles. Explore more on the role of IGBTs in robotic servo drives.
- Uninterruptible Power Supplies (UPS): In online UPS systems, the module's converter and inverter sections provide a compact and efficient power path for both battery charging and AC output generation, contributing to higher overall system power density.
Technical Deep Dive: The Foundation of Performance
Two core design principles elevate the Fuji Electric 7MBR100U2B060-50 beyond a standard power module. Understanding these is key to leveraging its full potential.
First is the **CIB Topology**. By co-packaging the rectifier, brake, and inverter stages, Fuji eliminates the need for multiple discrete modules and complex bus bar arrangements. This not only saves space but critically reduces parasitic inductance between stages. Lower inductance leads to lower voltage overshoots during high-speed switching, simplifying snubber circuit design and improving the overall electromagnetic compatibility (EMC) profile of the end system. The result is a cleaner, more reliable, and easier-to-design power stage.
Second is the use of Fuji Electric's U-Series IGBT die. This 4th generation technology employs a trench gate and field-stop layer structure. The trench gate architecture increases channel density, significantly lowering the on-state resistance and thus the conduction losses (VCE(sat)). The field-stop layer allows for a thinner drift region, which reduces turn-off losses (Eoff). This optimized trade-off is crucial for achieving high efficiency in Variable Frequency Drive (VFD) applications that operate across a wide range of speeds and loads.
Key Parameter Overview
For detailed specifications, engineers can reference the complete datasheet. Here are the critical parameters for the 7MBR100U2B060-50:
For complete electrical characteristics and performance curves, please download the datasheet. Note: The linked datasheet is for the base model; the -50 variant may feature enhanced characteristics.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 600V |
| Collector Current (Ic) @ Tc=80°C (Inverter) | 100A |
| Collector-Emitter Saturation Voltage (Vce(sat)) @ Ic=100A | Typ. 1.7V / Max. 2.2V |
| Forward Voltage (Vf) @ If=100A (Inverter FWD) | Typ. 1.6V / Max. 2.1V |
| Maximum Junction Temperature (Tj max) | 150°C |
| Topology | 3-Phase Rectifier + Brake Chopper + 3-Phase Inverter |
Frequently Asked Questions (FAQ)
Q1: What is the primary benefit of the integrated brake chopper in the 7MBR100U2B060-50?
The integrated brake chopper provides a built-in, cost-effective solution for dynamic braking. It allows the system to dissipate regenerative energy from a decelerating motor as heat through an external resistor. This prevents the DC bus voltage from rising to dangerous levels, protecting the inverter and other components. It eliminates the need for a separate, larger, and more costly external brake module, simplifying both inventory and mechanical design.
Q2: How does the internal NTC thermistor improve system reliability?
The NTC thermistor is bonded directly to the module's insulating substrate, placing it in close thermal contact with the IGBT and diode chips. This provides far more accurate and responsive temperature feedback than an external sensor on the heatsink. A system's microcontroller or gate driver can use this feedback to implement precise over-temperature protection (OTP), allowing for thermal foldback (power reduction) or a controlled shutdown before a catastrophic IGBT failure can occur, dramatically increasing the operational lifespan and safety of the entire application.
For inquiries about pricing, availability, or to discuss how the Fuji Electric 7MBR100U2B060-50 can fit into your next design, please contact our technical team.
