TPS65552ADGQ datasheet by Texas Instruments

TPS65552ADGQ Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces separate, using a solid ground plane, and minimizing loop areas to reduce EMI.
• How do I choose the correct output capacitor value?
  The output capacitor value depends on the specific application requirements, such as output voltage ripple, transient response, and stability. A general guideline is to use a capacitor with a value between 10uF to 47uF, with a voltage rating of at least 2x the output voltage.
• What is the maximum input voltage that can be applied to the device?
  Although the datasheet specifies a maximum input voltage of 5.5V, it's recommended to limit the input voltage to 5V to ensure reliable operation and prevent damage to the device.
• How do I implement overvoltage protection (OVP) and undervoltage protection (UVP)?
  The TPS65552ADGQ has built-in OVP and UVP features, but they can be adjusted using external resistors. For OVP, connect a resistor between the OVP pin and GND, and for UVP, connect a resistor between the UVP pin and GND. The values of these resistors depend on the specific voltage thresholds required.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to turn the device on or off. When the EN pin is high, the device is enabled, and when it's low, the device is disabled. This pin can be used to implement power sequencing, shutdown, or low-power modes in the system.