A good PCB layout for the DRV102FKTWT involves keeping the high-current paths short and wide, using a solid ground plane, and placing the device close to the motor. TI provides a recommended PCB layout in the datasheet and application notes.
The sense resistor value depends on the motor current and the desired current sense accuracy. A good starting point is to choose a sense resistor value that sets the current sense voltage to around 0.5-1.5V at the maximum motor current. TI provides a sense resistor calculator tool to help with this.
The DRV102FKTWT has an operating temperature range of -40°C to 125°C. However, the device can be derated for high-temperature operation. Consult the datasheet for more information on thermal derating.
The DRV102FKTWT has built-in overvoltage protection (OVP) and undervoltage protection (UVP) features. However, additional external protection components such as TVS diodes or zener diodes may be required depending on the application. Consult the datasheet and application notes for more information.
A decoupling capacitor with a value of 10-100nF is recommended, placed as close as possible to the DRV102FKTWT's power pins. This helps to filter out high-frequency noise and ensure stable operation.