Content last revised on December 3, 2025
CM450DX-24S: Engineering High-Efficiency Power Conversion
The CM450DX-24S is a high-power dual IGBT module from Mitsubishi's S-Series, engineered to deliver exceptional efficiency and reliability in demanding switching applications. With core specifications of 1200V and 450A, this module leverages Mitsubishi's advanced 6th generation chip technology to minimize power losses and optimize thermal performance. Key benefits include significantly reduced conduction losses and superior switching characteristics. This module is specifically designed for engineers developing high-power systems like industrial motor drives and renewable energy inverters who require a balance of performance and robust thermal management. What is the primary benefit of its low VCE(sat)? Reduced heat generation, which allows for smaller heatsinks and greater system power density. For power systems demanding robust performance and high efficiency in the 450A class, the CM450DX-24S offers a compelling engineering solution.
Key Parameter Overview
Decoding the Specs for Enhanced Thermal Reliability
The technical specifications of the CM450DX-24S are foundational to its performance in high-power electronics. Each parameter is a critical piece of the puzzle for design engineers aiming to maximize efficiency and ensure long-term reliability. The table below outlines key values and provides an engineering interpretation of their significance, particularly focusing on thermal and electrical efficiency.
| Parameter | Symbol | Value | Engineering Significance |
|---|---|---|---|
| Collector-Emitter Voltage | VCES | 1200V | Provides a substantial safety margin for applications on 400V to 600V AC lines, ensuring robust protection against voltage spikes common in industrial environments. |
| Collector Current (DC) | IC | 450A (at TC=119°C) | Indicates a high continuous current handling capability, making it suitable for high-power inverters, large motor drives, and uninterruptible power supplies. |
| Collector-Emitter Saturation Voltage | VCE(sat) | 1.80V (typ) at 450A | This low value is a direct measure of conduction loss. Think of it like friction in a pipe; a lower VCE(sat) means less energy is wasted as heat while the switch is on, directly improving overall system efficiency. |
| Total Power Dissipation | Ptot | 3405W (at TC=25°C) | Defines the module's ability to dissipate heat. This high rating, coupled with low thermal resistance, simplifies Thermal Management and allows for operation at higher power levels. |
| Maximum Junction Temperature | Tjmax | 175°C | This high-temperature tolerance provides a greater operational safety margin and enhances reliability under demanding thermal loads, a key factor in industrial applications. |
Download the CM450DX-24S datasheet for detailed specifications and performance curves.
Application Scenarios & Value
Achieving System-Level Benefits in High-Power Motor Control
The CM450DX-24S is engineered for high-stakes applications where efficiency and reliability are paramount. Its robust design makes it a cornerstone component in systems that form the backbone of modern industry and renewable energy infrastructure. For systems requiring even higher current capacity, the related CM600DX-24T offers an increased rating of 600A.
A prime engineering scenario for the CM450DX-24S is in the power stage of a high-performance Variable Frequency Drive (VFD) for industrial automation. In this context, the module's low VCE(sat) of 1.80V (typ) becomes a decisive advantage. VFDs constantly modulate power to control motor speed, and every watt of energy lost as heat must be managed. The lower conduction losses of this module translate directly into reduced heat generation. This allows an engineer to either specify a smaller, more cost-effective heatsink, thereby increasing the power density of the VFD, or to operate the system reliably at higher ambient temperatures without thermal derating. This efficiency is critical in compact, enclosed control cabinets where airflow is limited.
- AC Motor & Servo Drives: Provides the precise and efficient power switching required for modern robotics and CNC machinery, where dynamic response and low energy consumption are critical.
- Uninterruptible Power Supplies (UPS): Ensures high reliability and efficiency in data centers and critical facilities, where minimizing energy waste is a direct operational cost factor. The module's robust thermal characteristics contribute to the long-term dependability of the UPS.
- Renewable Energy Inverters: Serves as a key component in solar and wind power inverters, converting DC power to grid-ready AC. Its low switching and conduction losses maximize the energy harvested and delivered to the grid, directly impacting the financial viability of the renewable project.
Frequently Asked Questions (FAQ)
What is the primary advantage of the 6th generation chip technology used in the CM450DX-24S?
The 6th generation technology, which includes Mitsubishi's CSTBT™ (Carrier Stored Trench Bipolar Transistor) structure, provides a superior trade-off between collector-emitter saturation voltage (VCE(sat)) and switching losses. This results in lower overall power dissipation, enhancing converter efficiency and allowing for potentially higher operating frequencies compared to older generation IGBTs.
How does the isolated baseplate of the CM450DX-24S benefit system design?
The isolated baseplate simplifies the mechanical and thermal design of the power system. It allows the module to be mounted directly to a common heatsink without the need for additional, often thermally resistive, insulating layers. This not only reduces assembly complexity and part count but also ensures a more efficient and reliable thermal path from the semiconductor chips to the heatsink, which is crucial for long-term reliability. What is the impact of this feature on assembly? It significantly streamlines the manufacturing process and reduces potential points of failure.
To support the design and decision-making process for high-power applications, it is crucial for engineers to have access to comprehensive technical data and application insights. As a distributor, we facilitate this by providing access to official documentation and expert resources, enabling informed component selection without making performance guarantees. For in-depth technical comparisons or system integration support, consulting the manufacturer's official documentation is always recommended.
