IGBT Drive Source Bridge Interface Board Used in Control System


In the world of power electronics, the efficient and reliable control of high-power devices is of paramount importance. One such critical component that plays a significant role in the operation of power electronics systems is the IGBT Drive Source Bridge Interface Board. This blog post aims to shed light on this essential interface board, explaining its function, significance and benefits it offers to power electronics applications.

Understanding the IGBT Drive/Source Bridge Interface Board:

The Insulated Gate Bipolar Transistor (IGBT) Drive Source Bridge Interface Board serves as an intermediary between the control circuitry and the high-power IGBTs in various power electronic systems. Its primary purpose is to facilitate the proper control and protection of IGBT modules, ensuring optimal performance and system reliability.

Function and Significance:

Signal Conditioning: The interface board receives control signals from the main control circuit and conditions them to meet the requirements of the IGBT modules. It adjusts the voltage and current levels, providing the necessary drive signals to control the IGBT switches effectively.

Electrical Isolation: The board incorporates isolation techniques, such as optocouplers or transformers, to ensure electrical isolation between the low-voltage control circuitry and the high-power IGBTs. This isolation protects the control circuitry from potentially damaging voltage spikes and transients.

Gate Driver Circuitry: The interface board includes gate driver circuitry, which generates the high-current, high-voltage pulses required to turn the IGBTs on and off rapidly. It provides the necessary voltage and current levels to ensure fast and precise switching, enabling efficient control of the power electronics system.

Protection and Fault Detection: The board incorporates various protection mechanisms to safeguard the IGBTs and the overall system. These protections include overcurrent protection, overvoltage protection, short-circuit protection, and temperature monitoring. Fault detection circuitry quickly identifies any abnormalities and triggers appropriate actions, such as fault reporting or system shutdown.

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Product Attributes

The features of an IGBT drive/source bridge interface board may vary depending on the specific application and requirements, but some common features include:

  • Voltage Level Shifting: The board includes circuits for converting the signals from the IGBT driver to the appropriate voltage levels for the IGBT power module.
  • Overvoltage and Overcurrent Protection: The interface board may include circuits for monitoring the voltage and current levels to protect against overvoltage and overcurrent conditions that could damage the IGBT or other components.
  • Temperature Sensing: The board may include temperature sensors to monitor the temperature of the IGBT power module and provide feedback to the control system.
  • High Current Traces: The board is designed with high-current traces to handle the high-current switching capability of the IGBT power module.
  • Compact Design: The interface board is typically designed to be compact and mounted in close proximity to the IGBT power module to minimize the length of the high-current traces, which can reduce noise and improve overall system performance.
  • Compatibility: The interface board may be designed to work with a variety of IGBT drivers and power modules to provide flexibility in system design.

Network Overview

  • The Mark VIe control system is built on a network hierarchy that connects individual nodes. These networks divide the various communication traffic into layers based on their individual functions. This hierarchy extends from the I/O modules and controllers that provide real-time process control to the HMI and facility-wide monitoring.
  • Each layer employs industry-standard components and protocols to simplify platform integration and improve overall reliability and maintenance. The Enterprise layer connects specific process control to a facility-wide or group control layer.
  • The customer provides this higher layer. Depending on the size of the facility, the network technology used in this layer is generally determined by the customer and may include either local area network (LAN) or wide area network (WAN) technologies.
  • In most cases, the Enterprise layer is separated from the other control layers by a router, which isolates traffic on both sides of the interface. When communicating with a facility-wide or DCS system, GE employs either a Modbus interface or a TCP/IP protocol known as GE Standard Messaging (GSM).
  • The Control layer ensures that the process equipment runs continuously. This layer’s controllers are highly coordinated in order to support continuous operation without interruption. The controllers operate at a fundamental rate known as the frame rate, which can range from 6 to 100 Hz. EGD is used by these controllers to exchange data between nodes. The supervisory and control layers support various levels of redundancy for the connected equipment.

Benefits and Applications:

Enhanced System Reliability: The IGBT Drive/Source Bridge Interface Board plays a vital role in ensuring the reliability of power electronics systems. It provides effective protection mechanisms, preventing IGBT failures due to overcurrent, overvoltage, or excessive temperatures. This enhances the lifespan of the system and minimizes costly downtime.

Precise Control: With its dedicated gate driver circuitry, the interface board enables precise control over the IGBTs’ switching characteristics. This precision facilitates efficient power conversion and helps optimize the system’s performance, improving overall energy efficiency.

Wide Range of Applications: The IGBT Drive Source Bridge Interface Board finds application in various power electronics systems, including motor drives, renewable energy systems (such as solar and wind power), uninterruptible power supplies (UPS), and electric vehicle charging infrastructure. Its versatility makes it a fundamental component across diverse industries.


The IGBT Drive Source Bridge Interface Board serves as a crucial interface between the control circuitry and the high-power IGBT modules in power electronics systems. It provides signal conditioning, electrical isolation, gate driver circuitry, and protection mechanisms, ensuring precise control and reliable operation. By incorporating this interface board, power electronics systems can achieve enhanced performance, improved energy efficiency, and increased system longevity. As power electronics continue to advance, the significance of the IGBT Drive/Source Bridge Interface Board will remain pivotal in driving the future of efficient energy conversion and control.

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