TPS40071PWPR datasheet by Texas Instruments

TPS40071PWPR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  Texas Instruments provides a recommended PCB layout in the TPS40071PWPR datasheet (page 23) and in the application note SLVAE03. It's essential to follow these guidelines to ensure optimal thermal performance and minimize thermal resistance.
• How do I select the correct input capacitor for this device?
  The input capacitor selection depends on the input voltage, output voltage, and output current. TI recommends using a low-ESR capacitor with a minimum capacitance of 10uF and a voltage rating of at least 1.5 times the input voltage. Refer to the datasheet (page 14) for more information.
• What is the maximum output current I can draw from this device?
  The TPS40071PWPR has a maximum output current rating of 7A. However, the actual output current capability depends on the input voltage, output voltage, and thermal conditions. Be sure to check the datasheet (page 3) for the output current derating curves.
• How do I implement overcurrent protection with this device?
  The TPS40071PWPR has a built-in overcurrent protection (OCP) feature. To implement OCP, connect a resistor (RILIM) between the ILIM pin and GND. The value of RILIM determines the OCP threshold. Refer to the datasheet (page 17) for more information.
• 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 EN is high, the device is enabled, and when EN is low, the device is disabled. You can use the EN pin to implement power sequencing or to turn off the device during shutdown or low-power modes.