TPS2814PG4

The TPS2814PG4 integrated power stage is a single-channel gate driver designed to drive Power MOSFETs used in DC/DC converters, automotive applications, and other power management projects. It achieves high efficiency and high immunity to transients and dV/dt spikes in the order of tens of kilovolts. With its robust design, the device can withstand transients up to 40kV, ground loops, and fault conditions to protect gate drive circuits. This makes it ideal for both cost-sensitive and industrial/automotive applications.

TPS2814PG4 is an advanced device which combines a high-efficiency integrated gate drive circuit with a wide input voltage range from 4.5V to 28V. It provides high gate drive current, up to 18A peak and 6A RDS (ON) limit, with fast switching speeds of up to 4ns. Furthermore, the device has several integrated protection features, requiring minimal external components and providing high system reliability. It is also compatible with low-side and high-side gate drives.

Application Field

The TPS2814PG4 is suitable for a wide range of applications, such as SMPS, DC/DC converters, automotive power supplies, industrial power supplies, and many other power management projects requiring efficient gate drive solutions. The device can be used in a variety of power supply topologies, such as Boost, Flyback, Sepic, and Forward converters. It provides an efficient, reliable and robust solution for driving Power MOSFETs and IGBTs in such applications.

Working Principle

The TPS2814PG4 is designed as an integrated high-efficiency gate driver. It combines low-side and high-side gate drive circuits, allowing for efficient driving of Power MOSFETs and IGBTs. It operates from a single 4.5V to 28V input supply and is capable of providing a peak gate drive current of up to 18A. The device integrates high-speed switch logic, low-side and high-side gate driver circuits, an over-temperature protection, and a built-in dV/dt spike transient threshold rate of up to 40kV.

The high-side circuitry is comprised of an ultrasonic MOSFET driver, a floating drive voltage of up to 2.5V, and a flip-sensing circuit which senses whether the MOSFET is on or off. The low-side driver includes an N-channel MOSFET driver, and a flip-sensing circuit that senses whether the MOSFET is on or off. This is supported by the built-in temperature protection, which prevents the device from operating past its desired limit. The device also has an under-voltage lockout (UVLO) feature, which prevents the drive stage from switching at an input voltage below 4.5V.

The device integrates an advanced level of protection and provides a robust solution for a wide range of applications. The high-speed switch logic ensures a fast switching time, which is essential for modern, high-efficiency DC/DC converters. The integrated dV/dt protection prevents damage caused by spikes, transients, and ground loops. Lastly, the temperature protection, flip-sensing, UVLO, and high-efficiency gate driver circuitry provide robustness and reliability in power management applications.

Conclusion

The TPS2814PG4 is an advanced integrated gate drive circuit optimized for driving Power MOSFETs and IGBTs in a variety of applications. It provides high peak gate drive current and ultra-fast switching speeds, and is equipped with numerous protection features for system robustness and reliability. The device allows for a wide input voltage range from 4.5V to 28V and is suitable for various power supply topologies and power management projects, making it an ideal solution for cost-sensitive and industrial/automotive applications.