Fuji Electric 7MBR100U2A060-50 | The Integrated CIB Module for Compact Motor Drives
The Fuji Electric 7MBR100U2A060-50 is a highly integrated Power Integrated Module (PIM) designed to streamline the development of compact and efficient power conversion systems. By combining a three-phase converter, a three-phase inverter, and a brake chopper into a single package, this module dramatically simplifies system architecture, reduces assembly costs, and enhances overall reliability for demanding industrial applications.
- Brand: Fuji Electric
- Model: 7MBR100U2A060-50
- Core Function: 600V, 100A 7-in-1 Converter-Inverter-Brake (CIB) IGBT Module
- Key Benefit: All-in-one solution for AC motor control, minimizing design complexity and footprint.
- Typical Applications: Variable Frequency Drives (VFDs), Servo Control Systems, Uninterruptible Power Supplies (UPS), and Industrial Automation.
A Deep Dive into the 7-in-1 CIB Architecture
The core strength of the 7MBR100U2A060-50 lies in its sophisticated Converter-Inverter-Brake (CIB) topology. This isn't just a collection of components; it's an engineered subsystem designed for synergy. Let's break down its value:
- The Converter Stage: A three-phase diode bridge rectifies incoming AC power into a stable DC bus. By integrating this stage, designers eliminate the need for six separate rectifier diodes, saving significant PCB space and simplifying procurement.
- The Inverter Stage: A robust three-phase bridge of six IGBTs and their corresponding freewheeling diodes forms the output stage. This section is responsible for synthesizing the variable voltage, variable frequency (VVVF) output required to drive AC motors with precision.
- The Brake Chopper: An additional IGBT and diode circuit is included to manage regenerative energy. During motor deceleration, kinetic energy flows back to the DC bus, causing its voltage to rise. The brake chopper safely diverts this excess energy to a braking resistor, protecting the system from overvoltage faults.
Solving Real-World Challenges: Application Scenarios
The integrated design of the Fuji Electric 7MBR100U2A060-50 directly addresses common pain points across several industries:
- Compact Motor Drives & Servo Systems: For designers of VFDs and servo amplifiers, cabinet space is a premium. This CIB module replaces at least eight discrete power components, allowing for a much smaller and more thermally efficient power stage. This leads to smaller overall drive dimensions and lower manufacturing costs.
- Uninterruptible Power Supplies (UPS): System reliability is paramount in UPS applications. The 7MBR100U2A060-50 enhances this by minimizing external power connections and potential points of failure. The integrated brake circuit is also essential for managing the DC bus voltage during battery charging and load transients.
- General-Purpose Inverters: In applications like industrial pumps, fans, and conveyors, this module provides a cost-effective and easy-to-implement power core. The standardized footprint and simplified gate drive requirements accelerate the design-to-production cycle significantly.
Key Technical Specifications: 7MBR100U2A060-50
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 600 V |
| Continuous Collector Current (Ic) @ Tc=80°C | 100 A |
| Collector-Emitter Saturation Voltage (Vce(sat)) typ. | 1.70 V (Inverter Part) |
| Gate-Emitter Threshold Voltage (VGE(th)) | 5.0V to 7.0V |
| Maximum Junction Temperature (Tj max) | 150 °C |
| Integrated Components | 3-Phase Rectifier + 3-Phase Inverter + Brake Chopper + NTC Thermistor |
Comparative Analysis & Selection Guidance
When is the 7MBR100U2A060-50 the right choice over a discrete solution? Consider the following trade-offs:
- Integrated CIB vs. Discrete Components: A discrete approach (using a separate rectifier, a 6-pack IGBT module, and a single IGBT for the brake) offers layout flexibility. However, it introduces significant complexity in PCB layout, thermal management, and assembly. The 7MBR100U2A060-50 excels by offering a pre-optimized, factory-tested solution that drastically cuts down on design time and assembly errors, making it ideal for high-volume or space-constrained products.
- Selection Tip: If your application is under 30kW and your primary goals are design simplification, faster time-to-market, and a compact final product, this integrated CIB module is almost always the superior choice. For highly specialized or extremely high-power applications, a discrete path may be necessary.
Frequently Asked Questions (FAQ)
- What is the purpose of the integrated NTC thermistor?The built-in Negative Temperature Coefficient (NTC thermistor in IGBT) provides real-time temperature feedback from the module's baseplate. This allows the system controller to implement precise over-temperature protection, preventing thermal runaway and extending the operational lifespan of the IGBT module.
- What is a key consideration for the heatsink design?Because all three power stages (converter, inverter, brake) are on a single substrate, a proper IGBT thermal design is critical. A single, flat, and adequately sized heatsink is required. It's crucial to use a high-quality thermal interface material (TIM) to ensure low thermal resistance between the module and the heatsink, enabling effective heat dissipation from all internal components.
By integrating key power conversion functions into one reliable component, the Fuji Electric 7MBR100U2A060-50 provides a clear path to developing more competitive and robust industrial systems. To see if this module fits your design or to contact our technical team for a quote, please explore our full catalog of power IGBT modules.
