Mitsubishi CM75DY-24H IGBT Module: 1200V 75A High-Speed Dual for Power Inverters
The Mitsubishi CM75DY-24H is a high-performance dual IGBT module from the H-Series, engineered to deliver exceptional efficiency and reliability in demanding power conversion systems. Encased in a standard, isolated package, this 1200V, 75A module provides a robust half-bridge building block ideal for constructing high-frequency inverters, advanced motor controllers, and uninterruptible power supplies. Its design focuses on minimizing switching losses and electromagnetic noise, enabling designers to create more compact, efficient, and quieter end-products.
In-Depth Analysis of Core Product Features
High-Speed Switching with Soft Recovery Characteristics
The CM75DY-24H is distinguished by its rapid switching capabilities, a hallmark of Mitsubishi's H-Series. This performance is not just about speed; it's about controlled speed. The module's internal freewheeling diodes (FWD) are optimized for soft recovery, meaning they transition from a conducting to a non-conducting state smoothly. This characteristic significantly dampens the voltage and current oscillations that typically occur during high-speed switching. For engineers, this translates directly into lower electromagnetic interference (EMI). The practical benefit is a reduced need for complex and costly external snubber and filter circuits, simplifying the PCB layout, accelerating compliance testing, and ultimately lowering the total system cost for applications like servo drives and power converters.
Optimized for Low Conduction and Switching Losses
Efficiency in a power module is determined by both conduction losses (when the device is on) and switching losses (during turn-on and turn-off transitions). The Mitsubishi CM75DY-24H excels in both areas. It features a low saturation voltage (Vce(sat)) which minimizes power dissipated as heat while conducting current. Simultaneously, its optimized gate characteristics and internal design ensure minimal energy is lost during each switching cycle. This dual optimization results in superior thermal performance, allowing the module to operate at cooler temperatures. This directly leads to higher system reliability, enables the use of smaller and more cost-effective heatsinks, and maximizes the energy efficiency of the final application—a critical factor in battery-powered systems like uninterruptible power supplies or efficiency-rated industrial machinery.
Typical Applications and Innovative Value
High-Frequency Motor Drives and Servo Control
In the field of industrial automation, precision is paramount. The CM75DY-24H's ability to operate efficiently at high PWM frequencies allows servo drives to achieve smoother current waveforms. This results in reduced torque ripple, lower audible motor noise, and more accurate position and speed control. For robotics, CNC machinery, and automated manufacturing lines, this translates into higher production quality and greater operational precision.
Uninterruptible Power Supplies (UPS)
The reliability of a UPS system hinges on the efficiency and robustness of its inverter stage. The low overall power loss of the CM75DY-24H means less energy is wasted converting DC battery power to AC power. This directly extends the battery runtime during a power outage. Furthermore, its excellent thermal efficiency reduces the internal operating temperature of the UPS, significantly enhancing the longevity of critical components and improving the system's overall Mean Time Between Failures (MTBF).
Industrial Welding Equipment
Modern inverter-based welding power supplies require precise and rapid control over high currents to create stable arcs. The CM75DY-24H's fast switching response enables advanced control algorithms that result in superior weld quality across various materials. Its robust thermal design ensures it can withstand the demanding, repetitive power cycles inherent in welding applications, providing the durability needed on the factory floor.
Key Technical Parameters Overview
Below is a summary of the critical electrical characteristics for the CM75DY-24H. For a complete list of specifications, please consult the official CM75DY-24H datasheet.
| Parameter | Value |
| Collector-Emitter Voltage (Vces) | 1200V |
| Collector Current (Ic) | 75A |
| Collector-Emitter Saturation Voltage (Vce(sat)) | 2.7V (typ.) @ Ic=75A |
| Configuration | Dual / Half-Bridge (2-in-1) |
| Gate-Emitter Voltage (Vges) | ±20V |
| Isolation Voltage (Viso) | 2500V (AC, 1 minute) |
Comparative Analysis and Selection Advice
When designing a power system, choosing the right module topology is as important as selecting the right current rating. The **Mitsubishi CM75DY-24H** is a dual or half-bridge module, offering two IGBTs in a single package. This contrasts with more integrated solutions like a PIM (Power Integrated Module), such as the Fuji Electric 7MBR50SB120-50.
A PIM typically integrates a three-phase diode rectifier, a three-phase IGBT inverter, and a brake chopper into one housing. The primary advantage of a PIM is its high level of integration, which simplifies the design and assembly of standard three-phase AC motor drives, reducing component count and board space.
Your choice depends on your application's specific needs:
- Choose the Mitsubishi CM75DY-24H if: Your design requires high flexibility. It is the ideal choice for building single-phase inverters, DC-DC converters (like in a boost or buck configuration), or custom multi-level inverter topologies where a standard all-in-one PIM is not suitable. Its focused performance allows for optimization of each stage of the power system independently.
- Choose a PIM Module if: Your goal is to develop a compact, standard three-phase AC motor drive quickly. The PIM simplifies the power stage design significantly, though it offers less flexibility for non-standard applications.
