Fuji Electric 7MBR100U4B120-50 | 1200V PIM for High-Density Power Conversion
The Fuji Electric 7MBR100U4B120-50 is a high-integration Power Integrated Module (PIM) from the trusted V-Series, engineered to deliver exceptional efficiency and reliability in demanding power conversion applications. This 7-in-1 module consolidates a three-phase converter, a brake chopper, and a three-phase inverter into a single, compact package. It is specifically designed for engineers developing systems up to 45kW, offering a streamlined path to reducing system size, enhancing thermal performance, and accelerating time-to-market.
- 7-in-1 Integration: Radically simplifies power stage design by combining rectifier, brake, and inverter circuits, minimizing PCB complexity and assembly costs.
- Optimized V-Series Technology: Employs Fuji Electric's 4th Generation trench gate and field-stop technology to achieve a superior balance between low collector-emitter saturation voltage (VCE(sat)) and reduced switching losses.
- Enhanced Thermal Sensing: Includes a built-in NTC thermistor for precise, real-time temperature feedback, enabling robust over-temperature protection and extending system lifetime.
- Industrial-Grade Reliability: Engineered for high power cycling capability and a robust short-circuit withstand time, ensuring dependable operation in harsh industrial environments.
Technical Deep Dive: The PIM Advantage
The core innovation of the 7MBR100U4B120-50 lies in its Power Integrated Module (PIM) architecture. By integrating seven power devices into a single housing, this module provides significant advantages over discrete or multi-module solutions. This integration minimizes the internal stray inductance between power stages, which is critical for mitigating voltage overshoots during fast switching events. The result is improved electromagnetic compatibility (EMC) and a reduced need for external snubber circuits, saving both board space and component cost. This level of integration is a key enabler for creating more compact and power-dense designs, a persistent trend across the power electronics industry. For a deeper understanding of how integrated modules can simplify design, explore our guide on IPM vs. discrete IGBTs.
Application Suitability and Value Proposition
The 7MBR100U4B120-50 is engineered to excel in applications where efficiency, space, and reliability are paramount.
- Variable Frequency Drives (VFDs): The module's all-in-one design is ideal for compact motor drives. The integrated brake chopper effectively manages regenerative energy during motor deceleration in applications like elevators, cranes, and conveyors, simplifying the overall VFD power core design.
- Uninterruptible Power Supplies (UPS): In mission-critical UPS systems, efficiency is key to reducing operating costs. The low VCE(sat) of the V-Series IGBTs minimizes conduction losses, leading to higher overall system efficiency and reduced cooling requirements. The module's proven reliability ensures system uptime when it matters most.
- Servo Drives: High-performance motion control systems demand precision and low noise. This module incorporates soft-recovery freewheeling diodes (FWDs) that reduce recovery losses and electromagnetic interference, enabling the clean power delivery required for modern robotic and CNC servo drives.
For engineers scaling their designs, the V-Series offers alternatives like the 7MBR75VB120-50 for slightly lower power requirements while maintaining the same architectural benefits.
Key Parameter Overview
The following table outlines the critical performance specifications for the 7MBR100U4B120-50. For complete details, designers should consult the official product documentation. Download the Datasheet.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (VCES) | 1200V |
| Collector Current (IC) @ TC=80°C | 100A |
| Collector-Emitter Saturation Voltage (VCE(sat)) typ. @ IC=100A | 1.80V |
| Power Dissipation per IGBT (PC) @ TC=25°C | 480W |
| Module Configuration | 7-in-1 PIM (3-Phase Converter + Brake + 3-Phase Inverter) |
| Integrated Sensor | NTC Thermistor |
Frequently Asked Questions (FAQ)
1. What are the primary benefits of a 7-in-1 PIM configuration?
A 7-in-1 PIM, such as the Fuji Electric 7MBR100U4B120-50, integrates the AC-DC rectification stage, the braking chopper for regenerative energy, and the DC-AC inverter stage into one component. This dramatically reduces the bill of materials (BOM), simplifies PCB layout, lowers assembly costs, and improves reliability by minimizing solder joints and interconnections. Understanding the fundamentals of these devices is crucial, as detailed in the engineer's ultimate guide to IGBT modules.
2. How does the integrated NTC thermistor improve system design?
The integrated NTC thermistor is thermally bonded to the module's substrate, placing it close to the IGBT and diode chips. This allows for highly accurate and rapid temperature monitoring. System controllers can use this feedback to implement precise thermal management strategies, such as derating power or initiating shutdown procedures, preventing catastrophic failures and enhancing the long-term reliability of the entire power system.
3. What gate drive considerations are important for this module?
Like most modern IGBTs, the 7MBR100U4B120-50 requires a dedicated Gate Drive circuit that can provide the appropriate voltage levels (typically +15V for turn-on and -8V to -15V for turn-off) and sufficient peak current to charge and discharge the gate capacitance efficiently. A negative turn-off voltage is highly recommended to ensure immunity against dv/dt induced turn-on, especially in a compact PIM with close device proximity.
