Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using vias to connect the ground plane to the thermal pad.
The input capacitor value depends on the input voltage ripple, output voltage, and output current. A general rule of thumb is to choose a capacitor with a value between 1uF to 10uF, with a voltage rating higher than the input voltage. TI also provides a capacitor selection guide in the datasheet.
The TPS2393APWRG4 has a maximum ambient temperature rating of 85°C, but it's recommended to derate the device's performance at higher temperatures. TI provides a thermal derating chart in the datasheet to help engineers determine the maximum operating temperature.
The TPS2393APWRG4 has a power-good output (PG) that indicates when the output voltage is within regulation. Engineers should ensure that the input voltage is stable and within the recommended range before enabling the device. During power-down, the input voltage should be removed before the enable pin is pulled low.
The output capacitor value and type depend on the output voltage, output current, and desired output ripple. A general rule of thumb is to choose a low-ESR capacitor with a value between 1uF to 10uF, with a voltage rating higher than the output voltage. TI also provides a capacitor selection guide in the datasheet.
TPS2393APWRG4 datasheet
by Texas Instruments
