UCC39411EVM

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The UCC39411EVM evaluation board is a DC/DC and AC/DC (Off-Line) SMPS. It is designed to help Power system designers evaluate the performance and robustness of the UCC39411 synchronous rectified buck controller. The board can provide multiple input and output combinations and can typically be used for AC/DC to DC/DC conversion applications in the range of 4 to 12V outputs with input voltages between 90 and 265 VAC.

The UCC39411EVM board is based on the Universal Input, Constant On-Time (UCC) UCC39411 Buck Controller and is designed to provide a low cost evaluation platform with multiple input and output combinations. The UCC39411 has a simple, yet sophisticated, architecture to provide high-efficiency performance and robust operation. It integrates a high-performance CMOS power switch, low-voltage driver, bootstrap configuration, and cycle-by-cycle peak current limit circuits. This integrated power solution replaces discrete components traditionally used for buck regulators.

The UCC39411EVM board utilizes a single-stage topology that combines the power switch, driver, MOSFETs, and bootstrap configuration. Internally, the non-synchronous-rectified buck controller features a pair of voltage output rectifiers connected in an open-loop configuration. This allows the UCC39411 to power the MOSFETs at a constant voltage without having to sense the output voltage. The UCC39411EVM board is designed to accept a wide range of input voltages from 8V to 34V, with additional optional output capabilities for board voltages between 4V to 12V. The output power is controlled by an external output resistor, commonly referred to as the ‘Duty Resistor’.

The UCC39411EVM’s performance is complementary to other UltraCSP products which help reduce PCB footprint and save power. For example, the UCC39411 supports true DC/DC and AC/DC to DC/DC conversion, for a wide range of voltages. The board can also deliver adjusted regulation voltage between 4V and 12V, depending on the Duty Resistor. The UCC39411 chip is also capable of continuous output power of up to 4W at a switching frequency of typically up to 350 kHz.

System Designers can further improve the board’s performance by optimizing system component selection, testing different load profiles, and debugging software for system control. Additionally, the UCC39411EVM evaluation board provides user-friendly features to simplify the system design process. It is capable of showing the output voltage of the system in real time, and its integrated bootstrap diode provides protection from device exposure to high input AC line voltages.

The UCC39411EVM is supported by a rich software platform, including a graphical user interface (GUI) for easy parameter settings and a complete graphical user manual. The software platform enables customers to quickly configure, characterize, and optimize their system’s performance. With this intuitive software, customers can adjust output voltage, underlying components, and the duty cycle of the power switch.

The UCC39411EVM board is an ideal platform for designers to evaluate and analyze the performance of their power solution using the UCC39411 controller. The board is designed to provide a comprehensive suite of features and benefits, such as its low component count, high-accuracy output voltage, high-efficiency performance, wide input voltage range, and user-friendly features. It enables designers to rapidly test, design, and optimize the power related design work, saving them money and time. The UCC39411EVM evaluation board is the perfect solution for system designers looking for a cost-effective, high-performance power solution.

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