A good PCB layout for the TPS53511RGTR involves placing the input capacitors close to the VIN pin, using a solid ground plane, and keeping the high-current paths short and wide. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
When choosing an inductor for the TPS53511RGTR, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to select an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100 mΩ.
The TPS53511RGTR is rated for operation from -40°C to 125°C, but the maximum ambient temperature range depends on the specific application and the device's power dissipation. In general, the device can operate up to 85°C ambient temperature with proper heat sinking and airflow.
The TPS53511RGTR has a built-in overcurrent protection feature that can be enabled by connecting a resistor from the OC pin to GND. The resistor value determines the overcurrent threshold, and the device will shut down if the output current exceeds this threshold.
Yes, the TPS53511RGTR can be used in a synchronous buck configuration, which can improve efficiency and reduce power losses. However, this requires additional components, such as a synchronous rectifier FET and a Schottky diode, and careful PCB layout to minimize parasitic inductance.
TPS53511RGTR datasheet
by Texas Instruments
