UCC3895EVM-001

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The UCC3895EVM-001 is a comprehensive evaluation module for AC/DC (off-line) Switch Mode Power Supplies (SMPS). It is designed with a simple on-board user interface, for ease of use and quick setup. The UCC3895EVM-001 is based on the UCC3895 family of integrated offline SMPS controllers, which feature fixed frequency operation, a 150KHz oscillator frequency and adaptive frequency jitter, fast line/load transient response, and precise current mode control with minimal external components. This allows for a wide range of AC/DC (off-line) SMPSapplications, including small power supplies, LED lighting, low power adapters and motor drives.

Aside from its user friendly per-programmed operations, the UCC3895EVM-001 is also enhanced with other strong features and capabilities. It is equipped with an oscilloscope trigger, so engineers can easily capture and analyze the transient waveforms in the power supply under single or dual-pulse load conditions. Moreover, it is combined with highly integrated functions, such as input power factor correction (PFC) and input current limitation (ICL). This increases the effectiveness of the power supply system while reducing the number of external components needed. Furthermore, the board enables users to observe the real-time current and voltage measurements of the power supply operating conditions.

When it comes to the working principle of the UCC3895EVM-001, it follows the primary side control architecture. This means that the power module is run by the controller and the PFC, and uses an opto-isolator circuit for the feedback loop. This provides an isolated voltage feedback on the primary side, eliminating the requirement of a separate voltage sense and feedback circuitry. Since the UCC3895EVM-001 is based on the current mode architecture, it has a fast line and load transient response. This results in a stable DC output voltage from the power module, even when the input voltage fluctuates. Furthermore, the power module features adjustable frequency and duty ratio for high efficiency over a wide load range.

The UCC3895EVM-001 is well-suited for evaluating and optimizing AC/DC(off-line) SMPS. It is highly flexible and adjustable, and its comprehensive on-board user interface allows users to quickly assemble a powerful power supply system. Moreover, the board is also equipped with powerful protective features. These features include for overvoltage, undervoltage, overcurrent, and overtemperature protection. The UCC3895EVM-001 boasts excellent accuracy and stability, and is well-suited for a variety of evaluation applications, including power adapters, high voltage motor drives and LED lighting systems.

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