TPS2813PWG4

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Introduction to TPS2813PWG4 Application Field and Working Principle

The TPS2813PWG4 is a programmable gate driver specifically designed to interface with a variety of gate devices to drive different power conversion topologies. It can provide power efficiencies up to 90% and is suitable for isolated and un-isolated buck converters, isolated flyback converters, as well as other power conversion topologies used in various industrial, automotive, and consumer applications.

This application note will discuss the application field and working principle of the TPS2813PWG4. It will focus on how it is able to drive various power conversion topologies, its key features, as well as its parameters for selection.

Application Field

The TPS2813PWG4 is a gate driver specifically designed to drive high-side and low-side gates of various power conversion systems. It can drive a wide range of different power conversion topologies such as isolated and un-isolated buck converters, isolated flyback converters, and other types of power conversion topologies.

The TPS2813PWG4 is also suitable for various industrial, automotive, and consumer applications. This includes motor control, power over Ethernet (PoE), lighting, avionics, 12 V and 24 V power supplies, chargers, and many more.

Key Features

The TPS2813PWG4 offers many key features that enable it to drive various power conversion topologies. It provides high output drive current of up to 1 A with programmable slew rates for both the high-side and low-side drivers. Moreover, it is designed to be used in a variety of common topologies and is optimized for applications using paralleled FETs.

Other features include integrated linear regulator and FET short-circuit current limit protection, dual over-temperature protection, independent current sensing and current regulation control, as well as an adjustable and programmable programmable timing.

The TPS2813PWG4 also includes an autonomous self-startup circuit and is protected against undervoltage lockout, over-current and over-voltage lockout, as well as a diagnostic output pin, which can be configured to indicate various faults or to provide programmable state indication.

Parameters for Selection

The TPS2813PWG4 provides several parameters when selecting a gate driver for specific applications. Some of these parameters include the gate drive voltage, gate drive current, gate drive slew rate, voltage regulated hold current, and switching speed.

The gate drive voltage should be the same as the voltage of the power source. The gate drive current is the maximum current that the gate driver can deliver, while the gate drive slew rate determines the rate at which the gate driver switches the output gate voltage. The voltage regulated hold current is set in order to keep the gate on if the power source is turned off. Lastly, the switching speed indicates how quickly the gate voltage is switched from one state to the other.

Working Principle

The TPS2813PWG4 works by utilizing a high-side switch, low-side switch, and a slew rate control circuit to drive the gates of the power conversion system. This circuit is designed to drive the gates of the power conversion system with a regulated current and voltage, enabling it to be more efficient and reliable in operation.

The high-side and low-side switches are controlled by the slew rate control circuit to ensure that they switch at the same rate and can operate within their specified thresholds. This circuit also includes protection features built-in such as current limit protection and over-temperature protection, ensuring that the power conversion system is operated safely and reliably.

In addition, the TPS2813PWG4 is also capable of providing programmable slew rates and timing parameters, allowing the user to customize the performance of the gate driver according to the specific requirements of the application.

Conclusion

The TPS2813PWG4 is a programmable gate driver specifically designed to drive various power conversion topologies. It provides high output drive current of up to 1 A with programmable slew rates for both the high-side and low-side drivers. It is suitable for a variety of industrial, automotive, and consumer applications and offers several parameters to select from when choosing the correct gate driver for specific applications. Furthermore, it is protected against current limit, over-voltage, and over-temperature, ensuring reliable and safe operation of the power conversion system.

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