Content last revised on November 7, 2025
Fuji Electric 1MBI200HH-120L-50 | High-Speed 1200V Chopper IGBT for Demanding Power Applications
The Fuji Electric 1MBI200HH-120L-50 is a high-performance single IGBT chopper module engineered for power systems that demand exceptional speed, efficiency, and reliability. This 1200V, 200A module integrates an N-channel IGBT with a fast-wheeling diode (FWD) in a compact, industry-standard package. It is specifically designed not as a generic inverter switch, but as a specialized solution for high-frequency boost converters, dynamic braking circuits, and high-power DC-DC applications where precise control and minimal energy loss are critical design goals.
Technical Deep Dive: Unpacking the HH-Series Advantage
The performance of the 1MBI200HH-120L-50 is rooted in Fuji Electric's advanced semiconductor technology. Understanding these features reveals how it solves specific engineering challenges:
- Advanced Trench Field-Stop Technology: This isn't just about lowering conduction loss. The refined trench gate structure and field-stop layer achieve an exceptionally low saturation voltage (Vce(sat)). For the engineer, this translates directly to reduced power dissipation during the on-state. The result is a cooler-running module, which simplifies thermal management, allows for more compact heatsink designs, and significantly improves the overall energy efficiency of your power conversion system.
- Optimized High-Speed Switching & Soft Recovery: The "HH" designation signifies high-speed capability. The module exhibits fast turn-on and turn-off times, minimizing switching losses—a dominant factor in high-frequency designs. Crucially, the co-packaged FWD features a "soft recovery" characteristic. This tames the voltage overshoots and high-frequency oscillations that often plague fast-switching circuits, simplifying EMC filter design and enhancing system reliability.
Application-Specific Value in Your System
Deploying the Fuji Electric 1MBI200HH-120L-50 delivers tangible benefits across various high-power applications, addressing common industry pain points:
- Dynamic Braking Circuits (Brake Choppers): In motor drives, this module excels at rapidly dissipating regenerative energy. Its high current handling and fast switching enable precise control of the braking resistor, protecting the DC bus from overvoltage events and ensuring safe, controlled deceleration of heavy inertial loads.
- Solar & UPS Boost Converters: The high-frequency capability of the 1MBI200HH-120L-50 allows designers to use smaller, lighter, and less expensive magnetic components (inductors) and capacitors. This not only reduces the bill of materials (BOM) cost but also increases the power density of the entire converter.
- High-Power Welding Equipment: In advanced welding power sources, the module's robust performance and fast switching enable precise control over the welding arc, leading to higher-quality welds and greater material compatibility. Its thermal efficiency ensures reliable operation even under demanding, repetitive load cycles.
- Industrial DC-DC Converters: For bulk power transfer in industrial automation, this chopper module provides a rugged and efficient building block. Its simple single-switch topology simplifies gate drive design and control logic compared to more complex multi-switch converters.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 1200V |
| Continuous Collector Current (Ic) @ Tc=80°C | 200A |
| Collector-Emitter Saturation Voltage (Vce(sat)) typ. @ Ic=200A | 1.90V |
| Package Type | M127 |
| Isolation Voltage (Visol) | 2500V (AC 1 minute) |
For a complete list of parameters and operating characteristics, please refer to the official 1MBI200HH-120L-50 Datasheet.
Strategic Selection: Dedicated Chopper vs. Integrated Module
Engineers often consider using one leg of a dual or six-pack IGBT module for a braking chopper application. While feasible, the 1MBI200HH-120L-50 offers a superior, dedicated solution. A standalone chopper module allows for optimized thermal management, as the braking circuit's heat dissipation (which is often intense but intermittent) is isolated from the main inverter bridge. This prevents thermal crosstalk and improves the overall reliability and lifespan of the motor drive. Furthermore, its layout simplifies high-current bus bar connections, reducing stray inductance. If your priority is maximum performance and reliability in a braking or boost application, a dedicated chopper is the professional choice.
To implement this advanced chopper in your next project or to explore other high-performance power solutions, browse our complete collection of IGBT Modules. For application-specific design advice or to request a quote, please do not hesitate to contact our technical specialists for support.
