Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general high-frequency layout guidelines, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths.
The selection of input and output capacitors depends on the specific application requirements, such as ripple current, voltage rating, and ESR. A good starting point is to use X5R or X7R ceramic capacitors with a voltage rating of at least 1.5 times the input voltage, and an ESR of less than 100 mΩ.
The TPS2547RTET 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. It's essential to ensure that the device's junction temperature does not exceed 150°C.
The TPS2547RTET 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, and the device will shut down if the input voltage exceeds the set threshold.
The recommended input voltage range for the TPS2547RTET is 4.5 V to 18 V, but the device can operate from 4 V to 20 V. However, the efficiency and performance may degrade at the extremes of the input voltage range.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
