Content last revised on January 18, 2026
Fuji 7MBP75RE120 IPM: Integrated 1200V 75A IGBT Module
In the drive towards more compact and efficient industrial automation, engineers face constant pressure to shorten design cycles without compromising system reliability. The Fuji Electric 7MBP75RE120, an advanced IGBT-IPM (Intelligent Power Module), directly addresses this challenge. This component is not simply a collection of switches; it is a fully integrated power stage solution. By combining a three-phase inverter, brake chopper, dedicated gate drive circuits, and a comprehensive suite of protection features into a single package, it offers a streamlined path to developing robust mid-power motor control systems. This level of integration fundamentally accelerates time-to-market for demanding applications.
The Strategic Edge of Integrated Power Stages
The adoption of highly integrated modules like the Fuji 7MBP75RE120 represents a strategic shift in power system design. In the context of Industrial 4.0, where equipment uptime and efficiency are paramount, minimizing potential points of failure is a key objective. A Power Integrated Module (PIM) architecture achieves this by replacing dozens of discrete components—and their associated solder joints and PCB traces—with a single, factory-tested unit. This approach not only shrinks the physical footprint of the power electronics but also drastically reduces assembly time and simplifies the supply chain. The result is a lower Total Cost of Ownership (TCO) and an inherently more reliable end-product, making it a powerful asset for manufacturers aiming to enhance their competitive advantage.
Field-Proven in Demanding Motion Control
The tangible benefits of the 7MBP75RE120 are clearly demonstrated in real-world deployments. For instance, a manufacturer of multi-axis CNC machinery transitioned from a discrete IGBT design to this integrated IPM. They reported a significant reduction in their inverter assembly and testing time, directly shortening their production lead times. More critically, they observed a marked decrease in early-life field failures that had previously been traced to power stage faults and gate drive inconsistencies. The module's pre-optimized drive and protection circuits provided a level of consistency that was difficult to achieve with their previous discrete component approach, enhancing the overall reputation of their machines for durability and precision.
Defining Performance: Key Specification Breakdown
To fully appreciate the engineering value of the Fuji 7MBP75RE120, it is essential to understand its core specifications. This module is engineered to deliver a precise balance of power handling, efficiency, and safety. For a comprehensive list of parameters, engineers are encouraged to Download the Datasheet.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 1200 V |
| Continuous Collector Current (Ic) | 75 A |
| Collector-Emitter Saturation Voltage (Vce(sat)) | 2.7 V (Typ.) |
| Isolation Voltage (Viso) | 2500 V (AC, 1 minute) |
| Integrated Protections | Over-Current (OC), Short-Circuit (SC), Under-Voltage (UV), Over-Temperature (OT) |
The Collector-Emitter Saturation Voltage (Vce(sat)) is a crucial parameter for thermal performance. Think of Vce(sat) as the "friction" the electrical current encounters as it flows through the active switch. A lower value, like the one optimized in this Fuji IPM, means less energy is wasted as heat during operation. This directly translates to lower cooling requirements, enabling designers to use smaller, more cost-effective heatsinks or achieve higher power density within the same thermal envelope.
The integrated protection suite is another cornerstone of this module's value. These built-in circuits for over-current, short-circuit, under-voltage, and over-temperature function like a vehicle's advanced safety systems. They preemptively monitor for hazardous conditions and act to protect the module before a catastrophic failure can occur, offloading a significant and complex design burden from the engineering team and ensuring a higher level of system resilience.
Where the 7MBP75RE120 Excels
The specific feature set of the Fuji 7MBP75RE120 makes it an ideal choice for a range of power conversion systems. Its robust construction and integrated intelligence provide significant advantages in several key areas:
- Variable Frequency Drives (VFDs): Its 7-in-1 topology, including the dynamic brake chopper, is perfectly suited for small to medium-sized AC motor drives (typically 11kW to 22kW) where controlled deceleration and energy dissipation are required.
- Robotic and CNC Servo Drives: In applications demanding high precision and repeatability, reliability is critical. The module’s integrated protections and fault alarm outputs enable rapid diagnosis and reduce downtime, a key factor in automated systems. To learn more, explore the role of IGBTs in powering precision servo drives.
- Industrial Pumps and Fans: The module simplifies the design of controllers for pumps and fans, where efficiency and dependability are the primary engineering goals.
- Uninterruptible Power Supplies (UPS): The high voltage rating and robust overload capability ensure reliable performance in online UPS systems, safeguarding critical loads.
Inside the Module: A Technical Breakdown
At its core, the 7MBP75RE120 utilizes a 7-in-1 configuration built on Fuji Electric's proven IGBT technology. This includes six IGBTs for the main three-phase inverter bridge and a seventh IGBT for the dynamic braking circuit. This integration is more than just placing dies in a box; the internal layout is optimized to minimize stray inductance, which is a common source of voltage overshoot and EMI in high-frequency switching applications. Furthermore, the inclusion of an integrated gate driver is a key advantage. This driver is precisely matched to the electrical characteristics of the internal IGBTs, ensuring optimal switching performance—fast turn-on and turn-off with controlled di/dt and dv/dt—while preventing issues like parasitic turn-on. A built-in NTC thermistor provides a direct, real-time temperature feedback path to the system controller, allowing for precise thermal management and overload protection.
Is the 7MBP75RE120 the Right Choice?
When selecting a power stage, engineers often weigh the benefits of an IPM (Intelligent Power Module) against a traditional discrete solution. The 7MBP75RE120 offers a compelling case for integration, especially when time-to-market and long-term reliability are key project drivers. It provides a validated, all-in-one power core, allowing design teams to focus on system-level features and software. For a deeper analysis of this trade-off, see our guide on IPM vs. Discrete IGBTs. For applications requiring different power levels, the 7MBR50SB120-50 offers a lower 50A rating, while the 2MBI200NB-120 provides a step up to 200A for more demanding loads.
Ultimately, the Fuji 7MBP75RE120 is designed for engineering teams who need to deliver robust, efficient, and reliable motor control solutions on an accelerated timeline. Its integrated nature shifts the focus from component-level design complexity to system-level innovation.
Frequently Asked Questions
1. What is the function of the 7th IGBT in the 7MBP75RE120 module?
The seventh IGBT, along with an accompanying freewheeling diode, forms a brake chopper circuit. This is used to dissipate regenerative energy from a decelerating motor, preventing the DC bus voltage from rising to dangerous levels. It's a critical feature for applications involving rapid speed changes or overhauling loads.
2. How do I interpret the alarm (FO) pin on the 7MBP75RE120?
The alarm output (FO pin) is an open-collector output that signals a fault condition. When a protection function (Over-Current, Short-Circuit, or Under-Voltage) is triggered, this pin will be pulled low. The system's microcontroller should monitor this pin to initiate a safe shutdown of the drive and can use this signal to log the fault for diagnostics, significantly speeding up troubleshooting.
3. What are the essential thermal management considerations for a PIM like the 7MBP75RE120?
Effective thermal management is crucial. Ensure a flat and clean mounting surface for the heatsink. A high-quality thermal interface material (TIM) must be applied evenly to minimize the thermal resistance between the module's baseplate and the heatsink. The heatsink itself must be sized based on the calculated total power dissipation (conduction and switching losses) to keep the module's junction temperature well below its 150°C maximum rating under worst-case operating conditions.
4. Can I parallel IPM modules like the 7MBP75RE120 for higher current?
Paralleling standard IPMs is generally not recommended. Unlike discrete IGBTs, the internal gate drive and protection circuits are not designed for current sharing. Mismatches in internal component characteristics and circuit delays can lead to imbalanced loading, potentially causing one module to carry a disproportionate amount of current, leading to premature failure.
