🧩 Introduction
Selecting an IGBT (Insulated Gate Bipolar Transistor) module is more than comparing datasheets. The right choice can reduce energy losses, improve system longevity, and maximize ROI. In this article, we’ll walk you through not just the basic parameters, but also key application-specific considerations and brand distinctions — helping you make the best investment for your industrial needs.
🔍 What Is an IGBT Module?
An IGBT module combines multiple IGBT chips and diodes into a single housing to simplify system integration and increase power density. It's used in:
● Industrial motor drives
● Solar inverters
● Welding machines
● Rail traction
● EV chargers
● Uninterruptible Power Supplies (UPS)
📷 Featured Product: Mitsubishi PM450RLA120
Reliable and high-performing IGBT module with 1200V / 450A rating.
📐 5 Technical Criteria You Must Evaluate
1. Voltage & Current Ratings
Choose a module that operates at least 20–30% above your maximum system voltage. For example, if your application peaks at 800V, a 1200V IGBT is ideal. Similarly, assess peak current vs continuous current — always with surge conditions in mind.
2. Switching Frequency (kHz)
IGBTs in high-frequency applications (e.g. induction heating or high-speed motors) must minimize switching losses.
● <10kHz → Use older-generation modules with lower cost.
● >20kHz → Choose modules with soft switching and low tail current.
💡 Tip: Newer modules like Infineon's TRENCHSTOP™ 5 IGBT can operate at higher frequencies with lower losses.
3. Thermal Resistance & Cooling Method
Lower R<sub>th(j-c)</sub> values mean better heat conduction. For high-power loads, liquid-cooled baseplates outperform air-cooled systems. Always check:
● R<sub>th(j-c)</sub>: Junction to case
● P<sub>d</sub>: Power dissipation at rated load
● Max T<sub>j</sub>: Junction temp (typically 150–175°C)
4. Gate Drive Requirements
Not all IGBT modules are plug-and-play. Some require isolated gate drivers, or protection circuits like:
● Soft turn-off
● Desaturation detection
● Miller clamping
➡️ For ease of use, IPM (Intelligent Power Modules) include gate drivers and protection inside.
5. Reliability Factors
Look into:
● Short-circuit withstand time (usually 10µs)
● V<sub>CE(sat)</sub> at 125°C vs 25°C
● Reverse recovery time of the anti-parallel diode
These influence the long-term reliability under heavy-duty cycles.
🏷️ Product Comparison Table
|
Model |
Voltage |
Current |
Features |
Applications |
|
|
|
1200V |
450A |
High reliability, fast switching |
Inverters, Motor Drives |
|
|
CM1000DU-24NFH |
|
1200V |
1000A |
Liquid cooling, high power |
Renewable Energy |
|
|
1200V |
300A |
Low R<sub>th</sub>, compact housing |
UPS, General Industry |
🛠️ Application-Specific Tips
|
Application |
Recommended Specs |
|
Motor Drives |
1200V, 100–600A, robust short-circuit protection |
|
Solar Inverters |
High-efficiency, fast switching (15–20kHz), low loss |
|
EV Chargers |
High reliability, thermal performance key |
|
UPS Systems |
Soft turn-on, EMI optimized modules |
🧪 Bonus: Should You Choose a New or Refurbished Module?
Pros of New:
● Warranty
● Traceability
● Guaranteed specs
Pros of Refurbished (From Trusted Seller):
● Lower cost
● Availability of discontinued models
● Often tested and repackaged professionally
💡 At MITKCO, all refurbished modules undergo full-load testing with datasheet verification.
✅ Conclusion
IGBT module selection is about balancing performance, cost, and long-term dependability. Always evaluate your system needs, environmental conditions, and compatibility with gate drivers. For consultation or to find the best-fit modules for your industrial application, feel free to contact MITKCO.