UCC2801DTR datasheet by Texas Instruments

UCC2801DTR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the UCC2801DTR to minimize EMI?
  A good PCB layout for the UCC2801DTR involves keeping the high-frequency components (e.g., the transformer, diodes, and capacitors) close together, using a solid ground plane, and minimizing the length of the high-current paths. TI provides a recommended layout in the datasheet and application notes.
• How do I choose the right transformer for my UCC2801DTR-based design?
  When selecting a transformer for the UCC2801DTR, consider the output power, voltage, and current requirements. Choose a transformer with a suitable turns ratio, core material, and winding configuration. TI provides guidelines for transformer selection in the datasheet and application notes.
• What are the key considerations for thermal management in a UCC2801DTR-based design?
  To ensure reliable operation, consider the thermal management of the UCC2801DTR. This includes providing adequate heat sinking, using thermal interface materials, and ensuring good airflow. The datasheet provides thermal resistance and junction-to-ambient thermal resistance values to aid in thermal design.
• How do I implement overcurrent protection with the UCC2801DTR?
  The UCC2801DTR has a built-in overcurrent protection feature. To implement it, connect a sense resistor in series with the output, and use the OC pin to monitor the current. Set the overcurrent threshold by selecting the appropriate sense resistor value and OC pin voltage.
• What are the key differences between the UCC2801DTR and other similar controllers from TI?
  The UCC2801DTR is a high-performance, low-power offline switcher controller. Compared to other TI controllers, it offers a unique combination of features, such as low standby power, high efficiency, and a wide input voltage range. Review the datasheet and compare features to determine the best controller for your specific application.