Fuji Electric 7MBR20SG060-60 | Compact 600V 20A PIM for Low-Power Drives
The Fuji Electric 7MBR20SG060-60 is a highly integrated Power Integrated Module (PIM) engineered for efficiency and reliability in low-to-medium power conversion applications. By combining a three-phase inverter, a brake chopper, and a built-in thermistor into a single compact package, this module streamlines system design, reduces assembly costs, and enhances overall thermal performance.
Product Highlights
- Integrated 7-in-1 Topology: Features a full three-phase inverter bridge (six IGBTs and six FWDs) plus a brake chopper IGBT with a freewheeling diode.
- Optimized Ratings: Rated for 600V and 20A, making it a perfect fit for 200-240V AC motor drives and other low-power industrial systems.
- Trench Gate Technology: Utilizes proven trench gate field-stop IGBT technology, balancing low conduction losses (VCE(sat)) with robust switching performance.
- Integrated NTC Thermistor: Allows for direct and accurate monitoring of module temperature, a critical input for effective thermal protection and system longevity.
- Compact Footprint: The consolidated design significantly reduces the PCB area required compared to discrete component solutions.
Application Scenarios & Engineering Value
The 7MBR20SG060-60 is not just a component; it's a solution engineered to solve specific design challenges in compact power systems.
- Small AC Motor Drives: In applications like conveyor belts, pumps, and fans up to 2.2kW, this module's all-in-one design drastically simplifies the power stage. The integrated brake chopper provides a ready-made solution for managing regenerative energy, eliminating the need for an external circuit.
- Robotic Servo Drives: For small robotic arms and CNC machines, space and reliability are paramount. The Fuji 7MBR20SG060-60 offers a power-dense solution, while its low internal stray inductance, a benefit of integration, contributes to cleaner switching and reduced EMI, simplifying the design of the robotic servo drive.
- Uninterruptible Power Supplies (UPS): In small-scale UPS systems, this PIM can serve as the core of the DC-AC inverter stage. Its proven reliability ensures dependable power delivery when it matters most, and the integrated thermistor provides essential feedback for managing system health.
Key Parameter Overview
The following table outlines the critical performance specifications for design engineers. For comprehensive details and characteristic curves, download the Fuji Electric Semiconductor Catalog.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 600 V |
| Continuous Collector Current (Ic) @ Tc=80°C | 20 A |
| Collector-Emitter Saturation Voltage (Vce(sat)) typ. | 2.2 V |
| Configuration | 7-in-1 (Three-Phase Bridge + Brake Chopper) |
| Maximum Junction Temperature (Tj max) | 150 °C |
| Isolation Voltage (Viso) | 2500 V (AC, 1 minute) |
| Built-in Components | NTC Thermistor |
Technical Deep Dive: The PIM Advantage
The core value of the 7MBR20SG060-60 lies in its PIM (Power Integrated Module) architecture. By co-packaging the essential semiconductor dies for an inverter and brake chopper, Fuji Electric provides several engineering advantages over a discrete design. Firstly, the internal connections are optimized to minimize stray inductance. This is critical for reducing voltage overshoots during high-speed switching, which in turn lessens the stress on the IGBTs and simplifies snubber circuit design. Secondly, all key power components are mounted on a single thermally conductive substrate (typically AlN or Al2O3), ensuring uniform heat distribution. This simplifies thermal management and improves the reliability and thermal performance of the entire power stage.
Frequently Asked Questions (FAQ)
What is the recommended gate drive voltage for the 7MBR20SG060-60?
For this class of Fuji IGBT module, a standard gate drive voltage of +15V for turn-on is optimal to ensure full saturation and minimize conduction losses. For turn-off, a negative voltage of -5V to -10V is recommended. Using a negative gate voltage provides a strong noise margin, preventing parasitic turn-on caused by Miller currents (dv/dt), which is crucial for robust operation in noisy motor drive environments.
How can I prevent IGBT failure in my application using this module?
The most common failure modes are overcurrent, overvoltage, and overtemperature. The 7MBR20SG060-60 helps mitigate these risks. Use the integrated NTC thermistor to implement a robust overtemperature protection scheme in your controller firmware. Ensure your gate driver has a desaturation detection (DESAT) circuit for fast short-circuit protection. Finally, careful PCB layout and the use of low-inductance bus bars will minimize voltage overshoots during switching. For a deeper understanding, review our guide on preventing common IGBT failures.
For detailed application notes or to discuss integrating the Fuji 7MBR20SG060-60 into your next design, please contact our technical team.
