A good PCB layout for the TPS61500PWPR involves keeping 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 separate power plane for the input voltage and to keep the noise-sensitive analog circuitry away from the switching node.
To ensure the stability of the output voltage, it's essential to choose the right 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 TPS61500PWPR can handle a maximum input voltage of 18V. However, it's recommended to operate the device within the recommended input voltage range of 3.5V to 15V to ensure optimal performance and reliability.
The output voltage of the TPS61500PWPR can be calculated using the following formula: Vout = (R1 / R2) * (Vin - Vref), where R1 and R2 are the resistors in the feedback network, Vin is the input voltage, and Vref is the internal reference voltage (1.2V).
The TPS61500PWPR can deliver a maximum output current of 2A. However, the actual output current may be limited by the input voltage, output voltage, and the internal power dissipation of the device.
TPS61500PWPR datasheet
by Texas Instruments
