TC426IJA

Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	TC426
Supplier Device Package:	8-CERDIP
Package / Case:	8-CDIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 85°C (TA)
Rise / Fall Time (Typ):	30ns, 30ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	1.5A, 1.5A
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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Overview

The TC426IJA is a high speed, low power, and advanced Gate Driver from Texas Instruments with advanced features and capabilities to support increased operating frequencies, switching efficiency and improved error management, while minimizing system power loss. The device is suitable for a broad range of power switches, including advanced insulated-gate bipolar transistors (IGBTs), MOSFETs, and mixed-signal application such as thyristors, photovoltaics, and motor control. This Gate Driver uses a high-side and low-side MOSFET driver to provide a reliable and consistent drive.

Application Fields

The TC426IJA has a variety of application fields, including but not limited to:

• Power conversion: The device is used for efficient and reliable power conversion in applications such as isolated AC-DC and DC-DC converters, battery charger, industrial power systems, and communications systems.
• Motor control: The device is used for controlling motors and generators in applications such as robotics, industrial automation, and appliance.
• Power management applications: The device is suitable for applications such as portable battery-powered systems, computer peripherals, as well as other applications where low power consumption is required.
• Thyristor Carriers: The device can be used to drive triacs and IGBTs in thyristor carriers, used in the design of applications such as lighting, welding and heating.
• Solar and LED Lighting: The device is suitable for applications such as solar inverters and LED lighting, as well as other high efficiency lighting applications.

Working Principle

The TC426IJA employs a differential drive input technique to provide a highly reliable and consistent drive signal. The device provides a low impedance gate drive for both high-side and low-side power switches, protecting them from switching noise, over-current, and overtemperature damage. The device also provides a logic-level signal for gate triggering with minimum gate-turn-off voltage (VGT).The device comprises two logic-level gate drivers (LT and ST) and two high-side gate drivers (MT and HT). The LT and ST drivers provide a low-side gate drive, while the MT and HT drivers provide a high-side drive voltage. The LT and ST drivers are driven by the logic-level inputs, which tell the device when to turn on or off the power switches. The MT and HT drivers provide a constant supply of gate drive voltage to the switches.The device also features overvoltage/overtemperature protection with pre-configured thresholds to protect devices from faulty switching. The device also features an active drain monitoring feature to detect overcurrents in the power switches and to respond by disabling the gate drive.

Conclusion

The TC426IJA is a high speed, low power and advanced Gate Driver designed to drive insulated-gate bipolar transistors (IGBTs), MOSFETs, and mixed-signal application such as triacs and photovoltaics. The device is suitable for a wide range of applications, including power conversion, motor control, power management, thristor carriers and solar and LED lighting. The device provides a low-impedance gate drive for both high-side and low-side power switches, with overvoltage, overtemperature and overcurrent protection.

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