UCC2897APWR datasheet by Texas Instruments

UCC2897APWR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the UCC2897APWR to minimize EMI?
  A good PCB layout for the UCC2897APWR involves keeping the input and output stages separate, using a star-ground configuration, and placing the IC close to the input capacitors. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
• How do I choose the right input and output capacitors for the UCC2897APWR?
  Choose input capacitors with low ESR and high ripple current ratings. For output capacitors, select ones with low ESR and high capacitance. The datasheet recommends a minimum capacitance of 10uF for the input capacitor and 22uF for the output capacitor.
• What is the maximum ambient temperature range for the UCC2897APWR?
  The UCC2897APWR can operate in an ambient temperature range of -40°C to 85°C. However, the junction temperature should not exceed 150°C.
• How do I adjust the output voltage of the UCC2897APWR?
  The output voltage of the UCC2897APWR can be adjusted by changing the resistor divider ratio between the FB pin and the output voltage. A higher resistor value will increase the output voltage, while a lower value will decrease it.
• What is the purpose of the EN pin on the UCC2897APWR?
  The EN (enable) pin is used to turn the converter on or off. When the EN pin is high, the converter is enabled, and when it's low, the converter is disabled. This pin can be used to implement power sequencing or to turn off the converter during shutdown.