## Mitsubishi CM300DU-24NFH | High-Efficiency 1200V/300A Dual IGBT for Demanding Inverters
The Mitsubishi CM300DU-24NFH is a high-performance dual IGBT module from the proven NFH-Series, engineered for designers who require a robust and efficient power switching solution. This module integrates two 1200V, 300A IGBTs in a half-bridge configuration, making it a cornerstone component for high-power three-phase inverters. It is specifically designed to deliver low power loss and high reliability in challenging industrial applications.
Key Features at a Glance
- High Power Density: Rated for 1200V (VCES) and 300A (IC), suitable for systems in the 50kW to 150kW range.
- Advanced Chip Technology: Utilizes Mitsubishi's 6th generation CSTBT™ (Carrier Stored Trench-Gate Bipolar Transistor) technology for an optimal balance of low saturation voltage and switching speed.
- Superior Thermal Performance: Features low VCE(sat) to minimize conduction losses and heat generation, simplifying thermal management.
- Integrated Monitoring: Includes a built-in NTC thermistor, allowing for precise, real-time temperature monitoring to enhance system protection and longevity.
- Industry Standard Package: Housed in a standard DU-type package, facilitating easy mechanical integration and potential drop-in replacement for existing designs.
Technical Deep Dive: The CSTBT™ Advantage
The core of the CM300DU-24NFH's performance lies in its Mitsubishi CSTBT™ chip. This proprietary trench-gate structure incorporates an n-type carrier-stored layer, which significantly enhances conductivity during the on-state. The direct engineering benefit is an exceptionally low collector-emitter saturation voltage (VCE(sat)), typically 1.70V at its rated current. For a power system designer, this translates directly into reduced conduction losses—the primary source of heat in high-current, medium-frequency applications. This efficiency reduces the required heatsink size, lowers operational temperature, and ultimately improves the overall reliability and power density of the end equipment.
Key Parameter Overview
The following table outlines the critical electrical and thermal characteristics of the Mitsubishi CM300DU-24NFH. For a comprehensive list of parameters, performance curves, and application notes, please download the official datasheet.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (VCES) | 1200 V |
| Collector Current (IC) | 300 A |
| Collector-Emitter Saturation Voltage (VCE(sat)) (Typ. @ IC=300A) | 1.70 V |
| Maximum Junction Temperature (Tj(max)) | 150 °C |
| Total Power Dissipation (PC) | 1388 W |
| Isolation Voltage (Visol) | 2500 V (AC for 1 minute) |
| Package Type | DU-Type |
Application Scenarios & Value Proposition
The robust design and efficiency of the CM300DU-24NFH make it an ideal choice for several demanding power conversion applications:
- Industrial Motor Drives: In high-power Variable Frequency Drives (VFDs) and servo drives, its low conduction losses lead to higher efficiency, meeting stringent energy standards like IE3/IE4. The module's durability ensures long service life in harsh factory environments.
- Uninterruptible Power Supplies (UPS): For mission-critical online UPS systems, reliability is non-negotiable. The module's stable thermal performance and integrated NTC thermistor provide the foundation for a highly dependable power stage, preventing catastrophic IGBT failure modes.
- Renewable Energy Systems: In solar and wind power inverters, maximizing energy yield is key. The high efficiency of these IGBT modules minimizes conversion losses, ensuring more power is delivered to the grid and improving the financial return of the installation.
Frequently Asked Questions (FAQ)
Q1: What are the key gate drive considerations for the CM300DU-24NFH?
A: For optimal performance, a gate driver capable of providing a stable +15V turn-on voltage and a -5V to -15V negative turn-off voltage is recommended. The negative voltage ensures robust immunity against parasitic turn-on induced by the Miller effect, which is crucial in a half-bridge topology. Proper PCB layout with short, low-inductance gate traces is essential for clean switching.
Q2: Can these modules be paralleled for higher current output?
A: Yes, the CM300DU-24NFH is suitable for paralleling. The positive temperature coefficient of its VCE(sat) helps ensure thermal stability and aids in balancing current sharing between modules. However, successful paralleling demands meticulous attention to symmetrical busbar and gate drive layout to minimize stray inductance and ensure simultaneous switching. For detailed guidance, it is best to contact our technical team.
