Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for high-frequency PCB design, such as using a solid ground plane, minimizing trace lengths, and using bypass capacitors to reduce noise and EMI.
The output capacitor should be chosen based on the output voltage, output current, and desired ripple voltage. A general rule of thumb is to use a capacitor with a capacitance value of at least 10uF and a voltage rating of at least 1.5 times the output voltage. Additionally, the capacitor's ESR (Equivalent Series Resistance) should be low to minimize voltage ripple.
The TPS3103E12DBVT has an absolute maximum input voltage rating of 18V, but it's recommended to operate the device within the recommended input voltage range of 2.7V to 15V to ensure reliable operation and to prevent damage to the device.
The TPS3103E12DBVT has a built-in overvoltage protection (OVP) feature that can be enabled by connecting the OVP pin to a voltage source. The OVP threshold can be set by selecting the appropriate resistor values for the OVP pin. Additionally, external OVP circuits can be implemented using zener diodes, resistors, and transistors to provide additional protection.
The TPS3103E12DBVT has a thermal derating of 13.3mW/°C above 25°C, which means that the device's power dissipation should be reduced as the ambient temperature increases to prevent overheating and ensure reliable operation.
TPS3103E12DBVT datasheet
by Texas Instruments
