IR2112STRPBF

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IR2112STRPBF Application Field and Working Principle

IR2112STRPBF belongs the PMIC (Power Management IC) Gate Drivers category and it is a specifically designed to improve the performance of the electric power components in different ways with improved speed, less heat generation and higher efficiency. IR2112STRPBF Gate Drivers are used for floating switch, for driving the MOSFET of the power system and also for driving the IGBT (Isolated Gate Bipolar Transistor) of the electric machine\'s inverter.

Features

• High Speed Gate Driver
• Over Voltage Protection
• Low Device Input Impedance
• Enhanced ESD Ratings
• High Voltage and Temperature Carrying Capacity
• Internal Gate Resistance for High Speed Operation

IR2112STRPBF Gate Drivers are highly efficient, improved and optimized to function in e-mobility, power grid system, lighting and display systems, and industrial applications.

Applications

• Electric Vehicles
• Electric Machines
• High Skylight Application
• Contactorless AC Switching
• Display Systems

Working Principle

The working principle of IR2112STRPBF Gate Driver consists of two sections, supply and logic. The supply section consists of two primary components i.e. the DCDC Buck converter, which provides the necessary gate settings, and the dead time control circuit, which provides the requested dead time. During the on state, source of the half-bridge is charged while the gate voltage is higher than the source voltage, thus powering up the MOSFET. During the off state, in order to disconnect the MOSFET, the gate voltage is lowered below the source voltage. The logic section of the IR2112STRPBF Gate Driver consists of selectable under-voltage lockout for each channel, a latch for each channel, a trigger for the dead time control, and a chip-select (/CS) input.

The dead time control circuit is one of the most important features of the Gate Driver as its primary function is to provide a controllable time delay between the switch-off and the switch-on of the MOSFETs. The dead time is based on the pwm carrier frequency, although the selection of the dead time period is dependent on the application at hand. IR2112STRPBF Gate Drivers make use of a selectable Under-Voltage Lockout (UVLO) circuit, which ensures that the device is kept in shutdown mode unless the voltage of the switch is above the UVLO threshold to ensure that the CPU is not affected by the sudden fluctuation of the power.

Finally, the chip-select (/CS) input allows the user to control the operation of the driver. When it is high, the Gate Driver is in normal operating mode, when chip-select is low the Gate Driver is in lockout mode and all operations are inhibited.

Advantages of IR2112STRPBF Gate Drivers

• Improved switching speed with integrated gate resistance
• High UVLO voltage accuracy
• Easy to use device selection options
• Highly integrated dual-channel solutions
• Low power consumption operation mode
• Enhanced ESD protection for greater reliability

Conclusion

The IR2112STRPBF Gate Driver is a highly efficient, medical grade device that is specifically designed for applications in medical and power consumption sensitive fields. It offers improved switching speed, a selectable UVLO circuit, and low power consumption operation mode with enhanced ESD protection for greater reliability. It is also highly integrated and cost effective, making it an ideal choice for medical and power electronics applications.

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