Texas Instruments provides a recommended PCB layout in the TPS3818G25DRVR evaluation module (EVM) user's guide, which can be found on the TI website. The layout includes guidelines for component placement, routing, and thermal management to ensure optimal performance and reliability.
The output capacitor selection depends on the specific application requirements, such as output voltage, current, and ripple. TI recommends using a low-ESR ceramic capacitor with a value between 10uF to 22uF, and a voltage rating of at least 2x the output voltage. The capacitor should also be placed close to the output pin to minimize parasitic inductance.
The TPS3818G25DRVR has an absolute maximum input voltage rating of 18V. However, the recommended operating input voltage range is 4.5V to 15V. Exceeding the absolute maximum rating can damage the device.
The TPS3818G25DRVR has a junction temperature rating of 150°C. However, the device's performance and reliability may degrade at high temperatures. TI recommends operating the device within the recommended temperature range of -40°C to 125°C for optimal performance and reliability.
The TPS3818G25DRVR has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The OVP threshold can be set by selecting the appropriate resistor values in the voltage divider network. TI provides a detailed example of OVP implementation in the datasheet.
TPS3818G25DRVR datasheet
by Texas Instruments
