UCC28061D datasheet by Texas Instruments

UCC28061D Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the UCC28061D to minimize EMI?
  A good PCB layout for the UCC28061D involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes, using a solid ground plane, and minimizing loop areas. TI provides a recommended layout in the datasheet and application notes.
• How do I choose the right inductor value for my design?
  The inductor value depends on the input voltage, output voltage, and desired switching frequency. A good starting point is to use the inductor selection guide in the datasheet or TI's online inductor selection tool. You can also use the following formula: L = (VIN - VOUT) / (ΔI * f_sw), where ΔI is the desired inductor ripple current.
• What is the maximum junction temperature (Tj) for the UCC28061D?
  The maximum junction temperature (Tj) for the UCC28061D is 150°C. It's essential to ensure that the device operates within the recommended temperature range to prevent overheating and ensure reliability.
• How do I implement overcurrent protection (OCP) with the UCC28061D?
  The UCC28061D has a built-in overcurrent protection (OCP) feature. To implement OCP, connect a sense resistor (Rs) in series with the inductor, and connect the sense resistor to the CS pin. The OCP threshold is set by the voltage on the CS pin, which is proportional to the sense resistor value.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to enable or disable the converter. When EN is high, the converter is enabled, and when EN is low, the converter is disabled. You can use the EN pin to implement power sequencing, shutdown, or low-power modes in your design.