UCC24636EVM

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The UCC24636EVM is a high performance evaluation board from Texas Instruments for off-line switch mode power supplies (SMPS). This system is capable of providing regulated output power from an unregulated AC input. UCC24636EVM is intended to be used by device manufacturers and power supply designers to evaluate the performance of the UCC24636 family of gate drivers used in switch mode power supplies. The board is based on Texas Instruments\' UCC24636 energy-saving 180V dual gate driver.

UCC24636EVM is a compact, space-saving, and efficient SMPS evaluation board with a maximum power rating of 100 W. The system can be used to evaluate the operation of the UCC24636 device as a half-bridge or full-bridge driver. It has been designed for applications including LED lighting, motor drives, air conditioners, and more. The board operates at an input voltage range of 85 V to 265 V AC with an operating temperature range of - 40℃ to + 85℃.

UCC24636EVM utilizes the inherent advantages of the UCC24636 SMPS driver along with programmable features that enable the system to be tailored to specific application needs. It also features a high-efficiency output stage with an external sense resistor to provide accurate over-temperature, over-voltage, and over-current protection. The evaluation board includes an integrated AC line filter, an active inrush limiting circuit, and an adjustable peak current detection circuit.

The operating principle of UCC24636EVM is based on a switch mode power supply (SMPS) topology. The board employs an unregulated AC input voltage range of 85 V to 265 V AC and provides an active current limit of 20A. During the normal operation, the input AC power is rectified and filtered by the integrated EMI filter and then fed to the UCC24636 energy-efficient dual gate driver. The UCC24636 device drives a low on-state resistance (RDS(ON)) MOSFET half-bridge or full-bridge switch. The output stage can be powered by either the UCC28910, UCC28950, or UCC28980 integrated power supply controllers.

The peak current-limit feature allows the output current to be accurately monitored and controlled to ensure that it does not exceed the protective current limit. Furthermore, the output MOSFETS are monitored by a differential voltage sense circuit with a differential amplifier to maintain a constant output voltage. This solution ensures precise control of the MOSFET switch and LCD power supply for improved efficiency. The PD pin on the UCC24636 can be used to control the UCC28910, UCC28950, or UCC28980 integrated power supply controllers.

The UCC24636EVM is an efficient, easy-to-use, and cost-effective solution for evaluating the performance of the UCC24636 family of gate drivers in switch mode power supplies. Its advanced features, including a high-efficiency output stage with an external sense resistor, integrated AC line filter, active inrush limiting circuit, and adjustable peak current detection circuit, make it an ideal choice for applications such as LED lighting, motor drives, air conditioners, and more.

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