TC4422EPA

Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	TC4422
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	60ns, 60ns
Input Type:	Non-Inverting
Current - Peak Output (Source, Sink):	9A, 9A
Series:	--
Voltage - Supply:	4.5 V ~ 18 V
Gate Type:	IGBT, N-Channel, P-Channel MOSFET
Number of Drivers:	1
Channel Type:	Single
Driven Configuration:	Low-Side
Part Status:	Active
Packaging:	Tube

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TC4422EPA Gate Driver is one of the most widely used and reliable gate drivers in the Power Management Integrated Circuits (PMIC) industry. It is a low-power MOSFET and IGBT gate driver with integrated charge pump. The driver provides peak currents up to 800mA and slew rates up to 1.7 A/ns. It also has two diagnostic outputs and two logic/PWM selectable inputs which make the device suitable for high-power and high-side switching applications.The TC4422EPA Gate driver is suitable for a broad range of DC-DC, AC-DC and off-line switching applications, including desktop and server power supplies, motor drives, industrial control, and automotive systems. It is most commonly used for DC-DC power conversion applications and can be implemented in a variety of topologies, including buck, boost and flyback converters.The TC4422EPA can handle up to 600V and is designed to improve efficiency in switching applications. It offers several integrated features such as overvoltage lockout protection, thermal shutdown, and built-in dead-time control to prevent shoot-through. It also has slew rates control and impedance-controlled outputs to enhance current limiting and shoot-through protection.The TC4422EPA has two separate and adjustable output drivers, each optimized for different power circuits. The first output driver is optimized for high-side shaping, while the second output driver is optimized for low-side shaping. Each output driver is configured as either a MOSFET gate drive or an IGBT gate drive, depending on the application.At its core, the TC4422EPA is a charge pump, providing regulated gate drive voltage to the power MOSFET or IGBT. The device combines the charge pump and discrete driver circuits in one package, reducing component count and cost. The drivers have built-in logic to latch off the low-side gate until the voltage across the MOSFET or IGBT remains high. This prevents the power switch from dv/dt induced shoot-through during the turn-on or off transition.The TC4422EPA can be controlled by either a CMOS/TTL compatible logic or an open drain PWM signal. Its two diagnostic outputs indicate an overload condition or a fault, such as a short circuit. Inputting either of these signals at the dedicated inputs provides a latching OFF of both drivers, which can be reset by cycling the power, logic or PWM input.In summary, the TC4422EPA is a versatile and reliable gate driver for higher power switching applications. It can be used in a variety of topologies, including buck, boost, and flyback. It has several built-in protection circuits, including overvoltage lockout protection, thermal shutdown and dead time control, offering a robust, cost-effective solution for power switching applications.

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