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Evaluation and Demonstration Boards and Kits

The TPS24772EVM-685 Evaluation Board is a feature-rich tool for a comprehensive evaluation of the TPS24772 with monitoring and control circuitry.

The TPS24772 is a synchronous, active-clamp power switch designed for automotive applications. It is designed for driving two or three N-channel MOSFETs with up to 685A peak source and most sink current. The device offers the capability of operating in both step-down or step-up configurations. The TPS24772EVM-685 evaluation board uses a 2 J-FET, synchronous buck topology for its power supply.

Application Field

The TPS24772EVM-685 is suitable for automotive applications such as engine control units and mains power supplies. With its high current capability, it can be used for controlled start-up and fast power-down applications.

Working Principle

The working principle of the TPS24772EVM-685 consists of a two J-FET buck topology powered by a DC source. The driver, TPS24772, can provide up to 685A of peak source and most sink current. The two power N-channel MOSFETs, IRF4110, are connected to the source voltage rail and the load and are controlled by the TPS24772. The driver is supplied with the PWM signal coming from the DCDC controller. This signal is used to control the duty cycle of the MOSFETs to generate the desired output voltage of the buck converter.

The board is designed to accommodate power input from any suitable DC power source between 6V-20V. The user can control the input voltage by manually adjusting the variable resistor R9. The board also provides protection against fault currents through integrated current sense resistors, temperature sensing and overvoltage/undervoltage protection.

Conclusion

The TPS24772EVM-685 Evaluation Board is a powerful tool to evaluate the capabilities of the TPS24772. With its two N-channel MOSFETs, it can support up to 685A of peak source and sink current, making it suitable for applications where fast and controlled power supply is needed, such as in engine control units and mains power supplies.

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