Content last revised on September 10, 2026
CM25MD1-24H Mitsubishi IGBT Module: 1200V 25A Converter-Inverter Power Stage
The CM25MD1-24H integrates a three-phase diode rectifier and a three-phase IGBT inverter into a compact, electrically isolated footprint to streamline 400V–480V industrial drive architectures. Top Specs: 1200V | 25A | VCE(sat) 2.5V typ. | Viso 2500VRMS. Key Benefits: Reduced assembly footprint; high electrical isolation safety. How does this integrated topology simplify inverter construction? It replaces separate rectifier blocks and half-bridge pairs with a pre-matched power core, cutting layout inductance. For space-constrained industrial drives operating on 400V AC lines, this 1200V compact module delivers an efficient, reliable power conversion stage.
Key Parameter Overview
Decoding Electrical Ratings and Thermal Limits
The integrated layout of the CM25MD1-24H houses both the input AC-to-DC rectification and the DC-to-AC output stages within an isolated baseplate enclosure. Below are the verified technical parameters from the manufacturer specifications:
| Subsystem / Parameter | Symbol | Test Conditions | Ratings / Value | Unit |
|---|---|---|---|---|
| Inverter Collector-Emitter Voltage | VCES | Tj = 25°C, VGE = 0V | 1200 | V |
| Inverter Continuous Collector Current | IC | TC = 25°C, DC | 25 | A |
| Inverter Peak Collector Current | ICM | Pulse width ≤ 1 ms | 50 | A |
| Inverter Collector-Emitter Saturation | VCE(sat) | IC = 25A, VGE = 15V, Tj = 25°C | 2.5 (typ) / 3.4 (max) | V |
| Inverter Maximum Power Dissipation | PC | Per IGBT device, TC = 25°C | 150 | W |
| Converter Repetitive Peak Reverse Voltage | VRRM | Rectifier Diode stage, Tj = 25°C | 1600 | V |
| Converter DC Output Current | IO | Three-phase full-wave rectifier, TC = 25°C | 25 | A |
| Isolation Voltage | Viso | AC 1 minute, 60Hz, terminals to baseplate | 2500 | VRMS |
| Operating Junction Temperature | Tj | Continuous operation under load | -40 to +150 | °C |
Download the CM25MD1-24H datasheet for detailed specifications and performance curves.
Application Scenarios & Value
Optimizing Compact Industrial Drives and Motion Control
What is the primary design benefit of the converter-inverter architecture? It minimizes PCB interconnects and parasitic bus inductance compared to discrete multi-device layouts. In automated manufacturing setups, engineers frequently encounter packaging bottlenecks when developing compact robotic servo drives and conveyor controls. The CM25MD1-24H solves this by integrating a three-phase diode bridge and six IGBT switches into an isolated baseplate package.
Consider the thermal pathway: heat flow in a power module operates like water draining through a funnel. The insulated copper baseplate of the CM25MD1-24H spreads localized junction heat uniformly across the heatsink interface. This ensures steady thermal dissipation when industrial machines undergo continuous start-stop acceleration cycles. For systems operating on higher current thresholds, related configurations such as the CM50DY-24H provide higher current capacity in a dual-switch package, while the FP25R12KE3 offers alternative integrated topology options.
System designers integrating equipment under international standards such as IEC 61800-3 benefit directly from the module's 2500VRMS galvanic isolation. This built-in barrier isolates sensitive DSP microcontrollers from high-voltage transients on the three-phase AC input stage.
Technical & Design Deep Dive
Internal Topology and Thermal Resistance Characteristics
The internal arrangement of the CM25MD1-24H combines high-voltage planar IGBT technology with matched fast-recovery free-wheeling diodes (FWDi). Operating as an integrated power stage, the module manages both conversion and inversion with consistent electrical symmetry across all three output phases. Understanding voltage, current, and thermal management is essential for achieving long operating lifespans.
Driving the gate of an IGBT module resembles charging a high-grade ceramic capacitor. The gate-emitter capacitance must be charged swiftly to avoid prolonged transitions through the active linear region. With an optimal gate resistor (RG = 13Ω nominal) and a gate drive voltage (VGE) of 15V, switching losses during turn-on and turn-off remain controlled, preventing localized thermal hotspots inside the silicon die. Design guidelines outlined by manufacturers like Mitsubishi emphasize proper thermal grease application to maintain minimal junction-to-case thermal resistance (Rth(j-c)).
For applications where overcurrent spikes occur during motor stall events, evaluating the Safe Operating Area guarantees that repetitive switching stresses remain well within the 1200V and 50A peak limits of the module.
Frequently Asked Questions
Engineering Queries and Integration Insights
How does the integrated 1600V converter section improve reliability on standard 400V/480V AC utility grids?
The 1600V repetitive reverse voltage rating on the input rectifier diodes provides a robust safety margin against transient utility surges and line harmonics common in industrial manufacturing environments.
What gate driver voltage and resistance are recommended for the inverter stage of the CM25MD1-24H?
A gate drive voltage of +15V with a recommended series gate resistance of 13Ω ensures swift switching transitions while keeping voltage overshoot within safe device limits during turn-off.
Explore engineering specifications and verify availability for the CM25MD1-24H by contacting our technical distribution team today.
