Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths to reduce EMI and noise.
Choose input capacitors with low ESR (Equivalent Series Resistance) and high ripple current ratings. For output capacitors, select ones with low ESR, high capacitance, and a voltage rating that meets or exceeds the output voltage. Refer to the datasheet for specific recommendations and calculations.
While the datasheet specifies an operating temperature range of -40°C to 125°C, it's recommended to derate the device's performance and reliability above 85°C. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
The TPS40140RHHRG4 has built-in overcurrent protection, but it's essential to implement additional fault detection and protection mechanisms, such as overvoltage protection, undervoltage lockout, and thermal monitoring, to ensure reliable operation and prevent damage.
While the datasheet specifies a minimum input voltage of 4.5V, it's recommended to operate the device with an input voltage above 5V to ensure optimal performance, efficiency, and reliability.
TPS40140RHHRG4 datasheet
by Texas Instruments
