A good PCB layout for the TPS40101RGER involves placing the input capacitors close to the VIN and EN pins, and the output capacitors close to the VOUT pin. Additionally, the high-current paths should be kept short and wide to minimize resistance and inductance. A solid ground plane and a separate power plane can also help to reduce noise and improve performance.
The choice of input and output capacitors for the TPS40101RGER depends on the specific application requirements. In general, low-ESR ceramic capacitors with a voltage rating of at least 2x the input voltage are recommended. The output capacitor should be chosen based on the desired output voltage ripple and transient response. 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 2x the output voltage.
The TPS40101RGER can handle input voltages up to 18V, but it is recommended to keep the input voltage below 15V to ensure reliable operation and to prevent overheating.
The output voltage of the TPS40101RGER can be adjusted by changing the resistor divider ratio between the FB pin and the output voltage. 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 TPS40101RGER can deliver up to 1A of output current, but the actual output current capability depends on the input voltage, output voltage, and ambient temperature. It is recommended to derate the output current based on the specific application requirements and thermal considerations.
TPS40101RGER datasheet
by Texas Instruments
