TC4425VMF713

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PMIC - Gate Drivers

Gate drivers are an integral component in any power circuit design, especially when it comes to power management integrated circuit (PMIC) applications. This is where the TC4425VMF713 comes in. The TC4425VMF713 is a PMIC-specific, N-Channel MOSFET gate driver that supports up to 650 Volt peak, enabling the switching of high-voltage power circuits. With soft-start, integrated overvoltage and overcurrent protection, the TC4425VMF713 is designed for reliable operation, especially in harsh conditions.

Application Field

The TC4425VMF713 is often used in a variety of PMIC applications, from automotive to consumer and industrial systems. Its high voltage and low on-resistance make it particularly suitable for high-power applications where efficiency, heat dissipation, and protection are major considerations. A few examples of its application include buck and boost converters, LED drivers, motor speed controls, power supplies, and Smart Switches.

Working Principle

The TC4425VMF713 is a half-bridge driver, meaning that it can drive both the high- and low-side switches of a power circuit. Its Operating Supply Voltage (VCC) is 3.3V to 20V and its Constant On-Time (COT) current source is provided via two external resistors. Its two High-Side/Low-Side Pin (HS/LS) gates are designed for level shifting, meaning it has the ability to drive both this gates simultaneously by a single high-side or low-side signal. Its operating frequency is adjustable, allowing the designer to optimize the design for their application. Additionally, it features overvoltage protection, precision current limiting, and undervoltage protection.

In addition to the HS/LS gates, the TC4425VMF713 also has a dedicated Feedback pin (FB) that can be used to monitor the output voltage or current of a power circuit. This is extremely helpful for monitoring the status of the system, in particular during start-up, and is also useful for setting up soft-start or pre-bias circuits. The TC4425VMF713 also features an integrated temperature sensor and thermal shut down, enabling the designer to protect their system from overheating.

Conclusion

The TC4425VMF713 is an ideal solution for a variety of high-power PMIC applications where efficiency, heat dissipation, and protection are important considerations. It is designed for reliable operation up to 650 Volt peak, and its integrated overvoltage and overcurrent protection, level shift feature, and integrated temperature sensor and thermal shut down make it especially suited for protecting high power systems.

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