TPS65145PWPRG4 datasheet by Texas Instruments

TPS65145PWPRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Texas Instruments provides a recommended PCB layout in the datasheet (section 10.2) and in the TPS65145EVM-001 evaluation module documentation. 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 and transient response. 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 TPS65145PWPRG4 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 implement overvoltage protection (OVP) and undervoltage lockout (UVLO) in my design?
  The TPS65145PWPRG4 has built-in OVP and UVLO features. OVP is set to 12.6V (typical) and UVLO is set to 4.2V (typical). These thresholds can be adjusted using external resistors. Refer to the datasheet (sections 7.3.4 and 7.3.5) for more information.
• What is the thermal derating curve for the device?
  The thermal derating curve is provided in the datasheet (section 10.1). The device's power dissipation capability decreases as the ambient temperature increases. Ensure that your design takes into account the thermal derating to prevent overheating and ensure reliable operation.