IR2184SPBF

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IR2184SPBF is an insulated gate bipolar transistor (IGBT) driver with built-in line by line protection, featuring high dv/dt capabilities and a wide operating temperature range. It is ideal for motor drives, lighting, renewable energy applications, and other industrial applications. The part is also capable of operating over a wide range of operating and temperature conditions, making it suitable for a variety of applications. This article will discuss the application field and working principle of the IR2184SPBF.

Application Field

The IR2184SPBF is a single-channel high-side, low-side driver specifically designed for use with standard IGBTs in bridge-driven applications. It is also suitable for various motor control, lighting, renewable energy and other applications. Its wide operating range (5V to 55V) supports a variety of operating conditions, and its high dv/dt capability and wide temperature range (–40°C to +85°C) are perfect for industrial applications.

The IR2184SPBF has a built-in line by line protection feature that provides additional overcurrent and overvoltage protection to ensure reliable data transmission. Additionally, the driver is equipped with an adjustable dead-time delay which helps reduce switching losses and ripple current in applications requiring multiple power supplies. In addition, the driver has a built-in Under-Voltage Lockout (UVLO) feature, which protects the power device from damage caused by over-driving.

Working Principle

The IR2184SPBF works by driving the gate of an IGBT with a high and low signal, in order to achieve bidirectional voltage control and energy transfer. The low signal turns the IGBT "off", while the high signal turns it "on". The IR2184SPBF uses a step-up/step-down regulator built with a dual-level output stage to provide the precision level-shifting needed to track the IGBT gate drive signals.

The IGBT drive signal is supplied by a high-side/low-side driver, which takes an input voltage (5V to 55V) and converts it into a low-side (ground) drive signal and a high-side drive signal. The high-side drive signal is used to turn the IGBT "on", and the low-side drive signal is used to turn the IGBT "off". This high-side/low-side driver is the most commonly used gate driving device for IGBTs.

When the IGBT is "on", its gate voltage must be forced to stay low to ensure that it is conducting. To do this, the gate voltage is continuously monitored. If the gate voltage begins to rise, the IR2184SPBF will quickly switch the gate drive signal to the low-side and keep the IGBT in conduction. When the IGBT is "off", the gate drive signal is continuously switched between the high-side and the low-side, to keep the IGBT off.

The IR2184SPBF also features a built-in line-by-line protection feature that provides overcurrent and overvoltage protection for the IGBT. If the IGBT is severely overdriven, the IC will reduce the drive current to protect the IGBT from damage. The adjustable dead-time delay increases the dead-time across the upper and lower transistors on the same IGBT, reducing switching losses and ripple current.

Conclusion

In conclusion, the IR2184SPBF is an IGBT driver with single-channel high-side and low-side drivers that can operate over a wide range of operating and temperature conditions. It features a built-in line by line protection feature, adjustable dead-time delay, and an Under-Voltage Lockout (UVLO) feature. It is suitable for motor control, lighting, renewable energy, and other industrial applications.

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