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 traces short, using a solid ground plane, and minimizing noise coupling. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure stability, it's crucial to follow the recommended component values and PCB layout. Additionally, make sure to decouple the input and output pins with suitable capacitors, and use a low-ESR output capacitor. It's also recommended to add a small resistor (e.g., 10 ohms) in series with the output capacitor to prevent oscillation.
Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and prevent damage to the device. Exceeding the maximum input voltage can lead to reduced performance, increased power consumption, or even device failure.
The TL3695D is rated for operation up to 125°C, but it's essential to consider the device's power dissipation and thermal management. Ensure that the device is properly heatsinked, and the PCB is designed to dissipate heat efficiently. It's also recommended to derate the device's output current and voltage at high temperatures to prevent overheating.
To troubleshoot issues with the TL3695D, start by verifying the input voltage, output voltage, and output current. Check the PCB layout and component values to ensure they match the recommended design. Use an oscilloscope to monitor the output voltage and input voltage ripple. If the issue persists, try replacing the device or consulting the Texas Instruments support resources.
TL3695D datasheet
by Texas Instruments
