A good PCB layout for the TPS70802PWP 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 TPS70802PWP output voltage, it's essential to use a suitable output capacitor with a low equivalent series resistance (ESR) and a high capacitance value. A minimum capacitance value of 10uF is recommended, and the capacitor should be placed as close to the output pin as possible.
The TPS70802PWP can handle a maximum input voltage of 15V, but it's recommended to operate the device within the specified input voltage range of 2.7V to 12V for optimal performance and reliability.
The TPS70802PWP is rated for operation up to 125°C, but it's essential to consider the device's power dissipation and thermal management when operating in high-temperature environments. Ensure that the device is properly heatsinked and that the maximum junction temperature is not exceeded.
The output voltage of the TPS70802PWP can be calculated using the following formula: VOUT = (R1/R2) * (VIN - VREF), where R1 and R2 are the resistors used in the feedback network, VIN is the input voltage, and VREF is the internal reference voltage (1.2V).