IR4426STR

Logic Voltage - VIL, VIH:	0.8V, 2.7V
Base Part Number:	IR4426S
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):	15ns, 10ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	2.3A, 3.3A
Series:	--
Voltage - Supply:	6 V ~ 20 V
Gate Type:	IGBT, N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

IR4426STR is a kind of gate drive integrated circuit from International Rectifier (IR) family. It integrates the drive circuitry and all necessary protection circuitry in a single package, and is used for different applications such as motor drivers, power control, voltage regulation, and other power-related applications. This article will discuss the applications and working principles of IR4426STR.

Applications of IR4426STR

The high performance and compact size of the IR4426STR make it an ideal choice for various application field. It is typically used for motor drivers, power control, and voltage regulation. First, the IR4426STR is ideal for motor driver applications due to its ability to provide high speed and high current. The IR4426STR provides up to 6A peak current, which enables it to drive high-current motors quickly and efficiently. In addition, its fast switching performance makes it suitable for high-speed motor applications.Second, the IR4426STR is also used for power control applications. Its built-in protection circuitry can protect against over temperature, over voltage, and over current. These protection features make it suitable for controlling power in high-power applications.Third, the IR4426STR is also used for voltage regulation applications. Its wide operating voltage range (up to 50 V) and fast switching performance makes it an ideal choice for controlling DC to DC converters, boost and buck converters, as well as other power related applications.

Working Principle of IR4426STR

The IR4426STR is a monolithic integrated circuit that contains a power n-type MOSFET switch, a built-in logic circuit and a protection circuitry. Its built-in logic circuit can be used to control the power switch on and off in accordance with input signals.The power MOSFET switch on the IR4426STR is a logic-level MOSFET switch, meaning that the gate voltage of the switch is controlled by the logic level of the input signals. When the input signals are low, the gate voltage of the switch is low and it remains off; when the input signals are high, the gate voltage of the switch is driven high and it is turned on.The protection circuitry of IR4426STR includes a temperature sensor, overvoltage protection (OVP) comparator and a current sense circuit. The temperature sensor is used to monitor the thermal conditions inside the chip, while the OVP comparator is used to detect the voltage level at the output of the power switch. If the voltage is greater than the set value, the OVP comparator will trip the power switch off. The current sense circuit is used to detect the current in the power switch. If the current exceeds the set value, the current sense circuit will trip the power switch off. This protection circuitry helps to protect the chip from damage due to excessive current and voltage.

Conclusion

In summary, the IR4426STR is a high performance and highly integrated gate driver IC, which is ideal for a number of applications such as motor drivers, power control, and voltage regulation. Its protection circuitry helps to protect the chip from damage due to over temperature, overvoltage, or over current. With its fast switching performance and compact size, the IR4426STR is an excellent choice for a variety of applications.

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