Texas Instruments

UCC2891PW

The UCC2891PW is a high voltage, high current, single-ended primary-side control PWM controller from Texas Instruments. It is specifically designed for offline flyback applications, such as power adapters and chargers, with an input voltage range of 90Vac to 264Vac and an output power up to 150 watts. Key features of the UCC2891PW include: 1. High-voltage startup: The UCC2891PW can start up and operate at input voltages as low as 90Vac, making it suitable for a wide range of applications. 2. High-power capability: The controller can handle output power levels up to 150 watts, making it suitable for a variety of power supply applications. 3. Single-ended primary-side control: The UCC2891PW uses a single-ended primary-side control architecture, which simplifies the design and reduces component count compared to other control topologies. 4. High-efficiency operation: The controller features a number of features that help to improve efficiency, such as a valley current limit, a burst mode operation, and a power-saving mode. 5. Protection features: The UCC2891PW includes a range of protection features, including over-current protection, over-voltage protection, and over-temperature protection, to help ensure the safe and reliable operation of the power supply. Applications for the UCC2891PW include: 1. Power adapters: The UCC2891PW is well-suited for use in power adapters for a variety of electronic devices, such as smartphones, laptops, and tablets. 2. Chargers: The controller can be used in a wide range of chargers, including those for smartphones, tablets, and other portable electronic devices. 3. Power supplies: The UCC2891PW can be used in a variety of power supply applications, including those for industrial, medical, and consumer electronics. 4. LED lighting: The controller can be used in LED lighting applications, such as streetlights, floodlights, and indoor lighting. Overall, the UCC2891PW is a versatile and high-performance controller that offers a range of features and capabilities that make it well-suited for a wide range of power supply applications.