IR2118SPBF

Current - Peak Output (Source, Sink):	250mA, 500mA
Base Part Number:	IR2118SPBF
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	80ns, 40ns
High Side Voltage - Max (Bootstrap):	600V
Input Type:	Inverting
Series:	--
Logic Voltage - VIL, VIH:	6V, 9.5V
Voltage - Supply:	10 V ~ 20 V
Gate Type:	IGBT, N-Channel MOSFET
Number of Drivers:	1
Channel Type:	Single
Driven Configuration:	High-Side
Part Status:	Active
Packaging:	Tube

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Abstract
This paper discusses the application field and working principle of IR2118SPBF which is a PMIC (Power Management Integrated Circuit) - Gate Drivers. It explores the application scenarios, interface and operational aspects of the device and its components, as well as its working principle and capabilities. The paper provides in-depth knowledge about the IR2118SPBF, which can be used for design and engineering of modern power supply systems.Introduction
The IR2118SPBF is a power management integrated circuit (PMIC) that is used in power supply systems. It is used to drive gates of power MOSFETs and IGBTs for smooth and accurate current release. It is available in a 14-pin SOIC package, and includes an operational amplifier, reference (current) amplifier, high- and low-side power transistors, and a toggling circuit.The IR2118SPBF achieves high current accuracy, and provides a robust driving capability to load switching elements such as MOSFETs and IGBTs. It also offers protection against short-circuits, under-voltage, over-voltage, open load, over-temperature, and ESD (Electrostatic Discharge). The device is used in various applications such as power supplies, motor controls, process controllers, fused-power transistor controllers, and uninterruptible power supplies.Application fields
The IR2118SPBF can be used in various applications such as power supplies, motor controls, process controllers, fused-power transistor controllers, and uninterruptible power supplies. In power supplies, the device is used for driving MOSFETs and IGBTs for efficient switching operations. In motor control applications, the device can accurately control motor speed, torque, and electrical parameters. The device can also be used in process controllers to precisely control output current or power. The device is well-suited for use in uninterruptible power supplies, as it provides robust protection against short-circuits and over-voltage events.Interface and components
The IR2118SPBF comprises of an operational amplifier, reference (current) amplifier, high- and low-side power transistors, and a toggling circuit. The interface is composed of ENA (Enable) and INH (Inhibit) pins which control the enable and inhibit functions of the circuit, respectively. The input pins SW (Switch) and OV (Overvoltage) control the switch driver and overvoltage protection functions, respectively. The output pins are either high-side (V+) or low-side (V-) output current sourcing pins.The device also includes a built-in thermistor which monitors the temperature of the device. The high-side power transistors are configured as output power transistors and are used to source or sink up to 200mA of current. The low-side power transistors are used as control (base) transistors and are used to provide the appropriate output state based on the input signals.Working principle
The IR2118SPBF performs its operations by converting the input signals into output currents or voltage levels. The device first amplifies the input signals (EN, INH, SW, and OV) using an operational amplifier. The amplified signals are then converted into corresponding output states using the high-side and low-side power transistors, and the toggling circuit. The output state (ON/OFF) is also determined by the input signals, with EN and INH signals acting as enable and inhibit inputs, and the SW acting as a switch input. The OV signal is used to prevent the release of excessive amounts of current. The device also includes an internal thermistor to monitor the temperature of the device and provide protection against over-temperature events.Conclusion
The IR2118SPBF is a PMIC - Gate Drivers that is used to drive gates of power MOSFETs and IGBTs for smooth and accurate current release. It offers protection against short-circuit, under-voltage, over-voltage, open load, over-temperature and electrostatic discharge events. The device is well-suited for use in power supplies, motor controls, process controllers, fused-power transistor controllers and uninterruptible power supplies. It achieves high current accuracy, and provides robust driving capability to the load switching elements. The working principle of the device is achieved by converting the input signals into corresponding output states.

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