UCC28220D datasheet by Texas Instruments

UCC28220D Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the UCC28220D to minimize EMI?
  A good PCB layout for the UCC28220D involves keeping the input and output stages separate, using a star-ground configuration, and placing the input filter components close to the IC. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
• How do I optimize the compensation network for the UCC28220D?
  Optimizing the compensation network for the UCC28220D involves selecting the right values for the compensation components (R1, R2, C1, and C2) based on the specific application requirements. A good starting point is to use the values recommended in the datasheet, and then adjust them based on the desired transient response and stability margins.
• What is the maximum output current capability of the UCC28220D?
  The maximum output current capability of the UCC28220D is 2A, but this can be limited by the thermal performance of the PCB and the ambient temperature. It's essential to ensure proper thermal design and heat sinking to achieve the maximum output current.
• How do I ensure the UCC28220D is stable and doesn't oscillate?
  To ensure stability and prevent oscillation, it's crucial to follow the recommended compensation network values and layout guidelines. Additionally, ensuring that the input and output capacitors are of high quality and have low ESR can help prevent oscillation.
• What is the recommended input voltage range for the UCC28220D?
  The recommended input voltage range for the UCC28220D is 8V to 18V, but it can operate down to 6V with reduced performance. It's essential to ensure the input voltage is within the recommended range to maintain the device's performance and reliability.