A good PCB layout for the TPS65131RGETG4 involves placing the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure the stability of the output voltage, it's essential to choose the correct output capacitor value and type. A minimum capacitance of 10uF is recommended, and the capacitor should have a low ESR (Equivalent Series Resistance) to minimize voltage ripple. Additionally, the output voltage can be stabilized by adding a small ceramic capacitor (e.g., 100nF) in parallel with the output capacitor.
The TPS65131RGETG4 can handle a maximum input voltage of 18V. However, it's recommended to operate the device within the recommended input voltage range of 4.5V to 15V for optimal performance and reliability.
The output voltage of the TPS65131RGETG4 can be programmed using an external resistor divider network connected to the FB (Feedback) pin. The output voltage can be calculated using the formula: Vout = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.
The thermal derating curve for the TPS65131RGETG4 is not explicitly provided in the datasheet. However, it's recommended to follow the general thermal derating guidelines for power management ICs, which typically involve reducing the maximum power dissipation by 1-2% per degree Celsius above the maximum operating temperature.
TPS65131RGETG4 datasheet
by Texas Instruments
Findchips
