TPS2814D

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The TPS2814D, an integrated gate-driver power monitoring subcircuit, offers an effective solution for high-speed, high-frequency switching applications. This part provides a fast-operating on/off switch with precision power-monitoring, undervoltage lockout, current-limit and overvoltage protection features. It is widely applied for high-power switching modules, power modules and LED drivers. In this article, the application field and working principle of the TPS2814D integrated gate-driver power monitoring subcircuit will be discussed.

Overview of TPS2814D

The TPS2814D is a one-chip gate driver that provides gate drive, precision power-monitoring, undervoltage lockout, overvoltage protection and current-limit protections. The device offers fast switching with a supply voltage range of 3.3 V to 18 V, and an external resistor is used to adjust the overvoltage threshold level. It also has a load current sensing capability and low on-resistance. The device is packaged in the 8-pin MSOP package and is AECQ-100 qualified.

Application Field of TPS2814D

The TPS2814D gate-driver power monitoring subcircuit is suitable for numerous high-power switching applications. It is widely used for applications such as high-power switching modules, power modules and LED drivers. The device also offers an adjustable input voltage range of 3.3V to 18V and current-limit protection capability, reducing the system design time and costs. In addition, the package size is small and the device is AECQ-100 certified, which makes it suitable for automotive applications.

Working Principle of TPS2814D

In the TPS2814D, the input voltage is monitored by comparator. When the voltage threshold is exceeded, the comparator triggers the overvoltage protection circuit. When the overvoltage condition occurs, the comparator output will switch on the overvoltage protection circuit. The overvoltage protection circuit then turns off the output Pull-Down transistor, which pulls the output low to protect the system from overvoltage. The TPS2814D also has a current-limit protection circuit which monitors the current flowing through the output gate driver. When the monitored output current exceeds the set limit, the current-limit protection circuit will shut off the device’s output Pull-Down transistor. This will pull the output low and limit the switch’s output current.

Conclusion

The TPS2814D is a one-chip gate driver that provides gate drive, precision power-monitoring, undervoltage lockout, overvoltage protection and current-limit protection features. The device is suitable for numerous high-power switching applications and is packaged in the 8-pin MSOP package and is AECQ-100 qualified.

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