TC426EUA

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Gate drivers are essential components used in switching power supply circuits, and the TC426EUA is a current triggered logic output voltage gate driver. It is a very popular gate driver in Power Management IC (PMIC) family. This article discusses the application fields and working principles of the TC426EUA.

Description of TC426EUA

The TC426EUA is a single high-current output gate drive controller. It features a p-channel insulated gate bipolar transistor (IGBT) output, with a 3A peak output current and a 2A continuous output current. It has a wide operating voltage range of 4.5V to 58V and is compatible with a variety of logic families (TTL/CMOS, LVCMOS).

It features a low-side gate driver configuration and has a low-quiescent current of 200uA. Its high-side output is configured for p-channel IGBTS and has a programmable UVLO (Under Voltage Lockout) and VHYS (Voltage Hysteresis) thresholds. It also has an under-voltage lockout option, which protects the IGBT from being switched on accidentally in the event of a voltage drop or surge.

Application Fields of TC426EUA

The TC426EUA is suitable for a wide range of applications, such as motor control, switch-mode power supplies, and automotive systems. It can be used in a variety of circuits, such as solid-state relays and high-current switches. It is also suitable for IGBT based DC-DC converters, inverters, and high-voltage DC-AC inverters used for renewable energy applications.

The TC426EUA can also be used in a variety of power supply applications, such as switch-mode power supplies, solar inverters, and automotive systems. It can also be used in a number of motor control applications, due to its wide operating voltage range and high-current output. In addition, it can be used in PFC (Power factor correction) applications due to its under-voltage lockout option.

Working Principle of TC426EUA

The working principle of the TC426EUA is based on a current-triggered logic-output voltage gate driver concept. It features two outputs, a high-side output for p-channel IGBTs and a low-side output for N-channel IGBTs. The TC426EUA has two control inputs, a “Enable” pin which is used to enable or disable the device and a “Set” pin which is used to set the output voltage.

When the “Enable” pin is high, the device is enabled and the output voltage is set to the voltage specified on the “Set” pin. When the “Enable” pin is low, the device is disabled and the output voltage is set to 0V. The output voltage of the TC426EUA is an inverted version of the input voltage applied to the “Set” pin. The output voltage of the TC426EUA has a programmable UVLO (under voltage lockout) and VHYS (voltage hysteresis) threshold.

The TC426EUA also features an under-voltage lockout option, which prevents the IGBT from being switched on accidentally in the event of a voltage drop or surge. This feature is useful for preventing damage to the IGBT in the event of a sudden voltage drop.

Conclusion

The TC426EUA is a single high-current output gate drive controller, which is suitable for a variety of applications, ranging from motor control and switch-mode power supplies to automotive systems. It features a current-triggered logic-output voltage gate driver concept and has an under-voltage lockout option to protect the IGBT from accidental switching. The TC426EUA is a very popular gate driver among Power Management IC (PMIC) families.

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