TPS5430EVM-136

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TPS5430EVM-136 is an evaluation board of DC/DC & AC/DC (Off-Line) SMPS, which is designed to facilitate the evaluation of TPS5430. TPS5430 is an off-line primary power supply controller, integrated with PFC, APF, over-current, over-voltage, and other functions. The device also includes a wide input voltage range of 85VAC to 264VAC, average current mode control, and a feature of current fold-back combined with auto recovery.

The purpose of the TPS5430EVM-136 evaluation board is to simulate the TPS5430 device in a typical application. By connecting the evaluation board to an AC power source, the board can provide a 5V/2A, 3.3V/2A, or 12V/1.2A output voltage, depending on the selected mode. It provides high accuracy and fast transient response for the evaluation of the TPS5430 controller. Also, it can be used to monitor the real-time performance of the device, such as the current of the output, the power of the output, and other related parameters.

The working principle of the TPS5430EVM-136 evaluation board mainly involves two parts. The first part is the primary-side control circuit. It consists of an extensive power monitoring block, the PFC control block, transformer, start-up block, etc. The control block works under the average current-mode control, featuring wide operating range with low-noise operation. The transformer provides voltage feedback from the secondary side to the primary side via a coupling winding, which enables the parameters to be adjusted exactly as required.

The second part is the secondary-side synchronous rectification control circuit. This circuit also works under an average current-mode control. It provides the power conversion from the high-voltage DC to low-voltage DC. When the output is overloaded, or overload or short-circuit happens, the output will decrease to the current fold-back point. After the load is disconnected, the working current will automatically recover and the output will return to the original state.

In conclusion, the TPS5430EVM-136 evaluation board allows users to test, characterize, and validate the performance of the TPS5430 controller under various conditions. It provides excellent results with good power efficiency, high accuracy and stability, and quick transient response. The evaluation board also meets the requirements of a wide range of industrial applications and provides a permanent solution for reliable power conversion in the future.

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