Content last revised on December 29, 2025
Mitsubishi PM150RLA120 1200V 150A Intelligent Power Module
The PM150RLA120 represents a sophisticated integration of power, control, and protection, utilizing Mitsubishi’s proprietary CSTBT™ (Carrier Stored Trench-Gate Bipolar Transistor) technology to optimize efficiency in industrial automation. Precision-manufactured for medium-power 3-phase inverter systems, this Intelligent Power Module (IPM) simplifies system design by embedding over-current, short-circuit, over-temperature, and under-voltage protection directly within the package. What is the primary benefit of its integrated protection? It significantly reduces external component count while preventing catastrophic failure from overcurrent or overtemperature.
1200V | 150A | Vce(sat) 1.8V (typ.)
- Superior efficiency achieved through low-loss CSTBT™ chip architecture.
- High system reliability via real-time internal fault logic.
For 400V AC industrial drives requiring a 150A rating, the PM150RLA120 provides a highly integrated solution with superior thermal efficiency.
Application Scenarios & Value
Achieving System-Level Benefits in High-Efficiency Power Conversion
The PM150RLA120 is primarily utilized in Variable Frequency Drives (VFD) and servo drive systems where space-saving and thermal management are paramount. In industrial conveyor applications, engineers often face the challenge of motor starting surge currents. By leveraging the 150A continuous current rating and a peak current handling of 300A, this module ensures the system remains within the Safe Operating Area during heavy-load transients.
The integration of a brake circuit (7th IGBT) makes it exceptionally versatile for applications requiring dynamic braking, such as elevators or high-inertia machinery. This eliminates the need for a separate brake module, reducing the overall footprint on the heatsink. For designers requiring a lower current handling capacity within the same voltage class, the related PM100RLA120 offers a 100A alternative. Effectively, utilizing an IPM like the PM150RLA120 is akin to having a high-speed safety supervisor living inside the circuit, reacting faster to faults than any external controller could ever achieve. This level of system integration is explored further in our guide on IPM vs Discrete IGBT frameworks.
Key Parameter Overview
Decoding Technical Specifications for Enhanced System Thermal Reliability
The performance of the PM150RLA120 is defined by its ability to maintain low switching losses while providing a robust electrical interface. The parameters below reflect its capability at a junction temperature of 25°C, unless otherwise specified.
| Functional Group | Parameter Description | Value / Rating |
|---|---|---|
| Output Ratings | Collector-Emitter Voltage (Vces) | 1200V |
| Output Ratings | Collector Current (Ic) | 150A |
| Protection Levels | Over-Current Trip Level (OC) | 225A (min) |
| Thermal Data | Junction-to-Case Resistance (Rth(j-c)) | 0.12 °C/W (max) |
| Switching Characteristics | Collector-Emitter Saturation Voltage (Vce(sat)) | 1.8V (typ.) |
Download the PM150RLA120 datasheet for detailed specifications and performance curves.
Technical Deep Dive
Advanced CSTBT™ Architecture and Integrated Gate Drive Protection
The core of the PM150RLA120 performance lies in the CSTBT™ technology. Traditional IGBTs often struggle with the trade-off between saturation voltage and switching speed. Mitsubishi’s CSTBT™ structure works like a specialized high-speed train that reduces friction energy loss between stops, significantly lowering the Vce(sat) to approximately 1.8V while maintaining fast turn-off characteristics. This efficiency directly translates to a lower Thermal Management burden.
Furthermore, the gate drive circuitry is not just a buffer; it is a complex controller that monitors the collector current for desaturation events. If a short-circuit is detected, the module performs a "soft" turn-off to prevent excessive voltage spikes that could rupture the silicon. This internal SCSOA (Short-Circuit Safe Operating Area) management ensures that the module survives conditions that would destroy discrete components. To better understand these mechanisms, engineers can refer to the Mitsubishi CSTBT™ application insights or our comprehensive handbook on testing and reliability.
Industry Insights & Strategic Advantage
Future-Proofing Industrial Power Systems with Integrated Intelligence
The shift toward Industrial 4.0 and carbon neutrality regulations is driving a requirement for higher efficiency in power conversion. The PM150RLA120 addresses these trends by reducing the "Total Cost of Ownership" (TCO) through simplified logistics and higher field reliability. By integrating the protection logic and power stage, OEMs can reduce their "Time-to-Market" and avoid the complexities of tuning gate drive parameters for discrete IGBTs.
In the context of Variable Frequency Drives, the low Rth(j-c) of 0.12 °C/W allows for more compact heatsink designs, enabling higher power density in IEC 61800-3 compliant systems. As the industry moves toward 800V platforms and higher frequency switching, the PM150RLA120 remains a strategic choice for its balance of proven ruggedness and modern silicon efficiency. Its role in renewable energy systems is also vital, facilitating the reliable conversion required in medium-scale wind and solar applications.
FAQ
Common Engineering Questions Regarding PM150RLA120 Integration
How does the Over-Current (OC) protection functionality integrate with the system controller?
When the internal current sensing detects a value exceeding 225A, the module initiates a soft turn-off and simultaneously pulls the Fault (Fo) output pin low. This signal should be used by the system MCU to halt the PWM signals and initiate a safety routine.
What is the significance of the 1.8V Vce(sat) in high-duty cycle applications?
The 1.8V saturation voltage represents the conduction loss. In a high-duty cycle inverter, lower conduction losses mean less heat generated at the junction, which extends the Power Cycling Capability of the module and reduces the demand on the cooling system.
What isolation voltage is provided between the power terminals and the baseplate?
The PM150RLA120 provides an isolation voltage (Viso) of 2500V AC for one minute. This allows the module to be safely mounted on grounded heatsinks in accordance with industrial safety standards, without requiring additional isolation pads.
As a professional distributor, we provide the PM150RLA120 to support your most demanding engineering projects. For detailed availability or technical verification, please contact our sales team or request a quote online today.
