TPS61040DDCR datasheet by Texas Instruments

TPS61040DDCR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS61040DDCR to minimize noise and ensure optimal performance?
  A good PCB layout for the TPS61040DDCR involves placing the input and output capacitors close to the device, using a solid ground plane, and keeping the high-current paths short and wide. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I ensure the TPS61040DDCR is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the output capacitor has a low equivalent series resistance (ESR) and is placed close to the device. Also, avoid using ceramic capacitors with high ESR values.
• What is the maximum input voltage that the TPS61040DDCR can handle?
  The TPS61040DDCR can handle input voltages up to 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and to prevent overheating.
• Can I use the TPS61040DDCR in a high-temperature environment?
  The TPS61040DDCR is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to prevent overheating and ensure reliable operation.
• How do I calculate the output voltage of the TPS61040DDCR?
  The output voltage of the TPS61040DDCR can be calculated using the formula: Vout = (R1 / R2) * (Vin - Vref), where R1 and R2 are the feedback resistors, Vin is the input voltage, and Vref is the internal reference voltage (1.21V).