Fuji 6MBP50NA060 IGBT Module

6MBP50NA060 - Fuji Electric IGBT IPM N-Series Module

Content last revised on October 27, 2025.

Engineering Product Analysis for the 6MBP50NA060 Intelligent Power Module

The Fuji Electric 6MBP50NA060 is an N-Series Intelligent Power Module (IPM) that delivers a highly integrated and protected three-phase inverter power stage. This module consolidates six IGBTs with their corresponding free-wheeling diodes, dedicated gate drive circuits, and a suite of protection features into a single, compact package. Its core design objective is to enhance system reliability and simplify the design cycle for low-power motor control applications. Offering a robust specification of 600V and 50A, it provides a dependable solution for designers looking to minimize board space and component count without compromising on operational safety. For compact inverter designs up to approximately 2.2kW requiring built-in fault protection, the 6MBP50NA060 offers a streamlined and reliable power stage solution.

Key Parameter Overview

Decoding the Specs for Integrated Drive Design

The specifications of the 6MBP50NA060 are tailored for designers of compact and reliable motor drives. The 600V collector-emitter voltage (Vces) provides a substantial safety margin for applications running on 200-240V AC lines. The 50A continuous collector current (Ic) rating supports a range of fractional to low-horsepower motor applications. A critical parameter for reliability is the collector-emitter saturation voltage (VCE(sat)), specified at a typical value of 2.1V, which directly influences conduction losses and, consequently, the thermal performance of the system.

Download the 6MBP50NA060 datasheet for detailed specifications and performance curves.

Application Scenarios & Value

Achieving System-Level Reliability in Automated Machinery

The 6MBP50NA060 is engineered for applications where operational uptime and design simplicity are paramount. Its primary value is demonstrated in compact Variable Frequency Drive (VFD) systems, servo drives for factory automation, and HVAC compressor controls. A key engineering challenge in these systems is protecting the power stage from destructive events like motor phase short-circuits or locked rotors. The module directly addresses this by integrating short-circuit (SC) protection that actively monitors collector current and initiates a safe shutdown if it exceeds 75A. This integrated approach not only improves system robustness but also significantly reduces the need for external monitoring components, saving both board space and design effort. While this module is optimized for 50A requirements, systems demanding higher current handling for larger motors may consider the related 6MBP150NA060, which offers a 150A capability within a similar integrated framework.

Frequently Asked Questions (FAQ)

What is the function of the alarm (Fo) terminal on the 6MBP50NA060?

The alarm terminal (Fo) is an open-collector output that signals a fault condition to the host microcontroller. When the module's internal protection for short-circuit (SC), over-temperature (OT), or control supply under-voltage (UV) is triggered, this pin goes to a low state. This provides critical, real-time feedback for system-level fault management, enabling the controller to halt operations safely.

How do the integrated bootstrap diodes simplify the power supply design?

The module includes built-in bootstrap diodes and current-limiting resistors for the high-side gate drivers. This feature simplifies the power supply architecture by allowing the high-side driver circuitry to be powered from the low-side supply via a simple charge pump circuit (bootstrap capacitor). This eliminates the need for three independent isolated power supplies, reducing component count, cost, and overall design complexity, as detailed in many IPM vs. Discrete IGBT design guides.

Technical Deep Dive

Anatomy of Integrated Protection

The core value of the 6MBP50NA060 lies in its comprehensive, on-board protection circuitry, which transforms a standard inverter into a resilient, self-protecting subsystem. The module integrates gate drivers with control logic that provides three critical safeguards: short-circuit protection (SC), under-voltage lockout (UV), and over-temperature (OT) protection. The SC protection uses an internal shunt resistor to monitor the emitter current of each of the lower IGBTs. If the current surpasses a predefined threshold (typically >75A), the control logic immediately initiates a soft shutdown of all six IGBTs and issues an alarm signal. This swift, autonomous action is far faster than what can typically be achieved with external MCU-based monitoring, offering superior protection against catastrophic failure. This integrated safety net acts like an airbag in a car; it's a built-in, fast-reacting system that deploys automatically to prevent severe damage during a critical fault event, a level of protection that is complex and costly to replicate with discrete components.

To ensure system integrity, it is crucial to consult the application notes provided by the manufacturer, such as Fuji Electric, for correct implementation of the interface and control logic.

For detailed design-in support and to review performance characteristics under various operating conditions, please refer to the official product datasheet. This documentation provides the essential graphs, timing diagrams, and application circuits necessary for successful system integration.