TPS65140PWPRG4 datasheet by Texas Instruments

TPS65140PWPRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Texas Instruments provides a recommended PCB layout in the TPS65140PWPRG4 datasheet (section 10.2) and in the TPS65140PWPRG4 Evaluation Module User's Guide. It's essential to follow these guidelines to minimize noise, ensure proper thermal dissipation, and optimize performance.
• How do I select the correct output capacitor for my application?
  The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. TI recommends using a low-ESR capacitor with a minimum capacitance of 10uF. A higher capacitance can be used for improved ripple rejection. Refer to the datasheet (section 7.3.1) for more information.
• What is the maximum input voltage that can be applied to the device?
  The TPS65140PWPRG4 has an absolute maximum input voltage rating of 18V. However, the recommended operating input voltage range is 4.5V to 15V. Exceeding the absolute maximum rating can damage the device.
• How do I configure the device for a specific output voltage?
  The output voltage can be set using the FB pin and an external resistor divider network. The datasheet (section 7.3.2) provides a formula to calculate the required resistor values for a specific output voltage. TI also offers a voltage calculator tool to simplify the process.
• What is the thermal derating curve for the device?
  The thermal derating curve is provided in the datasheet (section 10.1). It shows the maximum output current vs. ambient temperature. The device's output current capability decreases as the ambient temperature increases to ensure safe operation.