TPS2491EVM-002

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Evaluation and Demonstration Boards and Kits are useful tools for developers, students, and educators, as they offer a platform for them to design, prototype, and test their applications in a shorter time. The TPS2491EVM-002 board is one such board that is designed to help users get a better understanding of the TPS2491 device. This article will provide a description of the application field and working principle of the TPS2491EVM-002 board.

The TPS2491EVM-002 board is a general-purpose evaluation and demonstration board designed for applications such as on/off switches for controlling electrical load, as well as digital logic circuits. It incorporates a low voltage resistor-based current-sensing device, which enables a high degree of accuracy when controlling power loads. In addition, the board offers a handy platform for prototyping and incorporating other components, such as protection devices, filters, and converters.

The features of the TPS2491EVM-002 board include: a 1.5-V output, a 1.8-V, 2.5-V, or 3.3-V logic family; low-side over-voltage, under-voltage, and over-current protection; current-sensing and temperature sensing; and a wide variety of logic outputs, including LED, buzzer, and relay outputs. The board also has a built-in CAN bus, which makes it easy to connect to other devices.

The working principle of the TPS2491EVM-002 board is based on a H-bridge driver circuit. This circuit employs two N-channel MOSFETs and two P-channel MOSFETs connected as an H-bridge to drive the load. The load is connected between the two MOSFETs, and the output of the power supply is connected to the rest of the circuit. When the input of the H-bridge driver circuit is low, the P-channel MOSFETs are on, and the N-channel MOSFETs are off. This allows the output of the power supply to be connected to the load. When the input of the H-bridge driver circuit is high, the N-channel MOSFETs are on, and the P-channel MOSFETs are off. This allows the output of the power supply to be disconnected from the load.

In addition to the H-bridge driver circuit, the TPS2491EVM-002 board incorporates a current-sensing resistor. This resistor is connected between the output of the H-bridge driver circuit and the power supply, and is used to measure the current flowing through the load. The output of the current-sensing resistor is then connected to the TPS2491 device, which is used to monitor the load current. If the current exceeds the specified threshold, the TPS2491 device will turn off the H-bridge driver circuit and disconnect the power supply from the load.

The TPS2491EVM-002 board also includes a temperature-sensing resistor. This resistor is connected between the output of the H-bridge driver circuit and the power supply, and is used to measure the temperature of the load. The output of the temperature-sensing resistor is then connected to the TPS2491 device, which is used to monitor the load temperature. If the temperature exceeds the specified threshold, the TPS2491 device will turn off the H-bridge driver circuit and disconnect the power supply from the load.

In addition to the H-bridge driver circuit and the current- and temperature-sensing resistors, the TPS2491EVM-002 board also incorporates a wide variety of logic outputs. These outputs are used to control other components in the system, such as LED, buzzers, relays, switches, and transistors. These logic outputs are also connected to the TPS2491 device, which is used to control the load.

In conclusion, the TPS2491EVM-002 board is a useful tool for those wishing to get a better understanding of the TPS2491 device. It is a general-purpose evaluation and demonstration board designed for applications such as on/off switches for controlling electrical loads, as well as a host of digital logic circuits. The board incorporates a low voltage resistor-based current-sensing device, which enables a high degree of accuracy when controlling power loads, and it also offers a wide variety of logic outputs, including LED, buzzer, and relay outputs. Additionally, the board incorporates a H-bridge driver circuit and a current- and temperature-sensing resistors.

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