IR2111STRPBF Integrated Circuits (ICs)

IR2111STRPBF is a family of adaptive gate drivers designed for bipolar and MOSFET power switches in a variety of automotive and non-automotive applications. This device is available in a small 4-lead SOT-223 or TO-220FM package, making it ideal for high-side switches up to 600V. The IR2111STRPBF has been designed utilizing a proprietary adaptive on time control scheme to provide optimized gate drive for both N-channel and P-channel power MOSFETs with no external components or adjustments. Its wide input supply range and its precise current-foldback protection scheme make it suitable for a wide variety of automotive and industrial applications.

The IR2111STRPBF’s main goal is to reduce power consumption and extend life of a system by allowing the user to choose the optimal gate drive voltage. This enables the system to draw less power while still allowing the same amount of drive to safely and reliably switch the power transistors. In addition, the device also has temperature protection and a protecting function to reduce the power dissipation of the high side switch during operation. This offers a degree of additional control and protection over traditional gate drivers.

The core of the device is an adaptive gate drive circuit called Adaptive On-Time Control (AOTC). The AOTC allows the user to adjust the gate drive voltage over the voltage range of 4V to 12V, depending on the type of MOSFET being used. The AOTC allows the user to select the optimal level of gate drive to maximize the system’s efficiency while minimizing power consumption. In addition, the AOTC also allows the user to adjust the gate charge duration to optimize the switching power losses in the power circuit.

The IR2111STRPBF also provides a reverse battery protection with an internal voltage VSENSE. The VSENSE circuit monitors the battery voltage and triggers when the battery voltage drops below a predefined level. The device then switches to a low-current linear regulation mode, limiting the current draw from the battery. This prevents possible damage to components caused by a reversed battery connection.

In addition to reverse battery protection, the device also provides an adjustable over current protection. The over current protection limits the amount of current that can be drawn from the power source which helps to prevent overloading and possible damage from excessive currents.

The IR2111STRPBF is an ideal device for automotive and industrial applications that require high input voltage and precise control over the gate drive voltage. Its wide input supply range and low-current protection make it suitable for both high-side and low-side switches. It offers precision current-foldback protection and temperature protection, enabling users to select the optimal gate driver voltage while minimizing power consumption and maximizing efficiency.