Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	TC4424
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	23ns, 25ns
Input Type:	Non-Inverting
Current - Peak Output (Source, Sink):	3A, 3A
Series:	--
Voltage - Supply:	4.5 V ~ 18 V
Gate Type:	N-Channel, P-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Active
Packaging:	Tube

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TC4424CPA Application Field and Working Principle

Introduction

TC4424CPA is a monolithic MOSFET driver integrated circuit manufactured by Microchip Technology. It is a dual high-current gate driver with two output stages consisting of internal N-channel and P-channel power MOSFET. This device is mainly designed for driving high-current loads such as solenoids and motors. Its wide input voltage range from 3 V to 70 V and its high peak output current of up to 1.5 A make it suitable for automotive, industrial and consumer industries.

PMIC - Gate Drivers

TC4424CPA belongs to Power Management Integrated Circuits (PMIC), under the category of Gate Drivers. PMICs are commonly used to efficiently manage the power of electrical systems. By properly managing the power of a system, PMICs can improve system efficiency, reduce energy loss, and optimize power characteristics.Gate drivers are power MOSFET and IGBT drivers which are used to control the switching behavior of these two devices. Gate drivers provide the necessary current to charge and discharge the gate capacitance and provides the necessary voltage level to switch an IGBT or MOSFET.

Features and Benefits

TC4424CPA features an avalanche ruggedness self-protection which effectively shields the device from the damaming effects of reverse supply loads or switching transients, providing a robust solution for harsh environments. Besides, the device also features a power on reset (POR) function which guarantees proper start-up operation. Additionally, this device has a Thermal Shut Down (TSD) feature which will shut down the device in case of an over-temperature situation, thus protecting the system from overheating damages.

Specifications

The TC4424CPA offers a wide variety of specifications for various applications. Starting from its Operating voltage, which is 3V to 70V, its Output Current limit which is 1A typical and its High-Level Output Voltage which is 0.68V to Vdd-3V, this device is capable of meeting all the requirements of a variety of applications. The device also features an On Resistance of 200 mΩ with a typical power dissipation of 1.7W per channel, 10nA of typical ground current and low quiescent voltage of 2.42V.

Working Principle

The TC4424CPA is specifically designed to drive high-current loads with two output stages. It is a monolithic MOSFET driver which consists of 2 N-channel and 2 P-channel MOSFET drivers. An internal low pass filter helps to reduce switching noise and inductance effect. When an input command is given, the current will start to flow from one of the outputs (depending on the input command) to charge the gate capacitance of the load. Then, the current will flow through the other output. This cycle continues until the output voltage reaches the maximum voltage level. The TC4424CPA also features a Thermal Shut Down (TSD) feature which will shut down the device in case of an over-temperature situation. This feature protects the system from damages due to overheating.

Conclusion

The TC4424CPA is an integrated circuit from Microchip Technology specifically designed for driving high-current loads. Its wide input voltage range, high peak output current and special features such as internal low-pass filter, power-on reset and thermal shut-down make it an excellent choice for applications in automotive, industrial and consumer industries.

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