UCC27712EVM-287

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Evaluation and Demonstration Boards and Kits are a set of components packaged together for use in engineering applications, particularly as learning tools for the engineering and development field. The UCC27712EVM-287 is such a board, and the purpose of this paper is to examine its applications and working principles.

The UCC27712EVM-287 is an evaluation and demonstration board designed for use with a single-phase generator with power factor correction. It is used to demonstrate the performance of a power factor corrected, low-voltage rectifier. This board is powered by an onboard 500V/2200VA transformer and equipped with various protections including inrush limiters, overvoltage protection, and liquid-level sensors to detect any abnormalities in its operation. It also features optical isolation for communication purposes, and a pulse-width modulated (PWM) controller that enables accurate control over the device’s performance. The board has two sets of LEDs that provide visual feedback of the operation of the device.

The UCC27712EVM-287\'s primary application is as a learning tool for engineers. It allows engineers to study the performance of the device under various conditions, such as off-load and overload performance. It also allows them to draw conclusions on the power factor correction performance, as well as initiate investigations into ways to improve performance. Additionally, the board\'s compact size and easy assembly makes it useful for student work, allowing them to explore and experiment with power factor correction circuits. It also serves a secondary application in production, allowing engineers to evaluate and troubleshoot problems in power factor corrected low-voltage rectifier designs, and developing new rectifier designs.

In terms of working principles, the UCC27712EVM-287 board utilizes a number of different components. At its core is the PWM controller, which takes inputs from the primary input line and the secondary input line, and outputs a rectified output voltage, as seen in Figure 1. This rectified output voltage runs through the onboard inrush limiters, protecting the device from any overvoltages. The board also features a liquid level sensor, which allows for the detection of irregularities in the rectifier\'s operation.

The UCC27712EVM-287\'s LEDs provide visual feedback on the operation of the rectifier, indicating the presence of an abnormality. Additionally, the onboard optical isolator allows for communication between the device and an external device, such as a computer, which allows for more detailed troubleshooting and monitoring of the device. Finally, the onboard transformer powers the board, which can be adjusted from 500V to 2200VA, depending on the needs of the application.

In short, the UCC27712EVM-287 is an evaluation and demonstration board designed for use with a single-phase generator with power factor correction. Its primary application is as a learning tool for engineers and students, though it also serves useful in production-level troubleshooting and development. Its various components, such as the PWM controller, inrush limiters, and liquid level sensor, provide robust protection and performance feedback to the user. Finally, its onboard transformer and optical isolator allow for communication and power for the device.

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