A good PCB layout for the TPS79901DRVT involves placing the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure the stability of the TPS79901DRVT output voltage, it's essential to use the recommended output capacitor value and type, and to place it close to the device. Additionally, the input voltage should be stable and within the recommended range, and the device should be operated within its recommended operating conditions.
The TPS79901DRVT can handle input voltages up to 5.5V, but it's recommended to operate the device within the recommended input voltage range of 2.7V to 5.5V for optimal performance and reliability.
The TPS79901DRVT is rated for operation up to 125°C, but it's recommended to derate the device's performance at high temperatures. It's essential to ensure that the device is operated within its recommended operating conditions and that the PCB is designed to handle high temperatures.
To troubleshoot issues with the TPS79901DRVT, start by checking the input voltage and ensuring it's within the recommended range. Then, check the output voltage and ensure it's within the expected range. If the issue persists, check the PCB layout and ensure it's following the recommended layout guidelines. Finally, check the device's thermal performance and ensure it's operating within its recommended temperature range.
TPS79901DRVT datasheet
by Texas Instruments
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