How do I start selecting a Mitsubishi power module?

Fix the voltage class from your DC bus, size the current for the worst-case load, then choose between an IGBT module and an IPM. Finally pick the configuration and package that fit your topology and board. Those four decisions narrow the catalog quickly.

IGBT module or IPM: which should I choose?

Choose an IPM when you want the drive circuit and protection integrated and the board kept simple, which suits compact and high-volume drives. Choose a discrete IGBT module when you need the highest current, more circuit flexibility or a custom gate drive. The decision is integration versus flexibility.

Can BeiLuo help finalize my module choice?

Yes. Send your voltage, current, switching frequency and topology and we will propose a shortlist with loss, thermal resistance and stock status, then support design-in. Getting the module right saves project time.

What selection mistakes should I avoid?

The usual mistakes are oversizing current, ignoring the thermal path and choosing a package that does not fit the heatsink. Each adds cost or risk without benefit. Validate the choice on the bench before committing the BOM.

How do I set the short-circuit trip level on a Mitsubishi IPM?

The module contains the comparator, but you select the external current-sense resistor that sets the trip current. Size it so the trip level sits above the motor peak current with margin but below the module's safe limit. Verify the level with a clamped current probe during bring-up.

What control supply does a Mitsubishi IPM need?

A Mitsubishi Electric IPM uses a dedicated control supply and accepts standard logic inputs, so it connects directly to common microcontrollers. Keep the control supply clean and place its decoupling close to the module. The undervoltage protection guards the module if the supply sags.

What protection does a Mitsubishi IPM include?

The module integrates short-circuit protection, undervoltage protection and over-temperature detection, and it reports a fault so the controller can shut down safely. You still design the DC-link and the thermal path. Respect the protection thresholds so they stay in reserve.

How should I lay out the IPM on the board?

Keep the DC-link capacitor close to the module power terminals, use short sense-resistor connections, and keep the high-current loop away from the low-level control signals. The integrated drive makes the board simpler but layout still affects EMI. Request a layout review from our FAE team.

My Mitsubishi IPM trips on short circuit at startup. Where do I start?

Check the current-sense resistor and the trip level first, then look for a short in the motor or wiring and for a control-interface problem. A trip at startup is usually a level or wiring issue rather than a thermal one. Measure the phase current with a clamped probe during the trip.

The module reports a fault but the load is light. Why?

A fault at light load often points to noise on the control supply, a marginal sense-resistor value or a poor thermal interface. Check the control supply for ripple, verify the trip level and confirm the module is mounted flat with a thin interface. Noise and mounting problems look like device faults.

How do I clear a latched fault correctly?

Read the fault type, remove the cause, then clear the fault and re-enable the drive only when the load is safe. Do not auto-restart quickly, because a persistent fault will trip again and may damage the hardware. Log the fault type to speed future diagnosis.

The module gets hot before it trips. Is that normal?

The over-temperature protection is a last line of defence, not a normal operating condition. If case temperature is high at rated load, improve the heatsink and interface so the protection stays in reserve. Request a thermal review for your design.

What is the standout feature of Mitsubishi T-series modules?

The T-series combines a low-loss CSTBT chip with a rugged standard package that offers a 4000 Vrms isolation voltage and a flat base. That makes it efficient and easy to mount on a common heatsink across 650 V, 1200 V and 1700 V classes. The main design care point is the commutation loop.

Why does the 4000 Vrms isolation matter?

A 4000 Vrms isolation voltage lets several modules share a common heatsink without an additional insulating layer, which simplifies the mechanical design and improves heat transfer. It is especially useful in multi-leg inverters. It is one of the practical advantages of the T-series package.

Does the T-series need a special gate drive?

No. The T-series uses a conventional gate drive, so familiar gate-resistor and dead-time rules apply. Its low loss simply gives you more thermal margin or allows a higher switching frequency. Confirm the gate resistor for your EMI target as usual.

Can I get samples to evaluate?

Yes. We provide samples of the T-series IGBT modules for your own efficiency and thermal testing, with documentation included and FAE support during bring-up. Request a sample and we will confirm stock and lead time.

Technical Support | Mitsubishi Expertise | BeiLuo

Guides, application notes, troubleshooting articles and reviews from BeiLuo's FAE team covering Mitsubishi Electric IGBT modules and IPM power modules.

Guides 1 Application Notes 1 Troubleshooting 1 Reviews 1

How to Select a Mitsubishi IGBT Module or IPM

2026-07-25 - Guides - By Hiroshi Ito

Compare Mitsubishi Electric T-series IGBT modules and G1 and V1 series IPM by voltage class, current and configuration to choose the right part for your design.

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Mitsubishi IPM Application Notes: Protection and the Control Interface

2026-07-18 - Application Notes - By Hiroshi Ito

Control supply, sense-resistor and protection guidance for designing compact servo and compressor drives around Mitsubishi Electric G1 and V1 series IPM modules.

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Troubleshooting Mitsubishi IPM Faults and the Control Interface

2026-07-08 - Troubleshooting - By Aiko Tanaka

A systematic method for diagnosing Mitsubishi Electric IPM fault outputs, short-circuit trips, over-temperature events and undervoltage faults, with practical fixes.

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Mitsubishi T-Series IGBT Modules: A Practical Review

2026-06-30 - Reviews - By Kenji Mori

A hands-on review of Mitsubishi Electric T-series IGBT modules for inverters and power conversion, covering loss, isolation and practical package practice.

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Meet Our FAE Team

Hiroshi Ito

Senior FAE Engineer, Power Modules

IGBT ModulesIPMThermal Design

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Aiko Tanaka

FAE Engineer, IPM and Protection

IPMProtectionMotor Drive

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Kenji Mori

FAE Engineer, Applications

IGBT ModulesInvertersEMC

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