STMicroelectronics provides a recommended PCB layout in their application note AN4392, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, ripple current, and ESR requirements. STMicroelectronics recommends using a low-ESR ceramic capacitor with a minimum capacitance of 10uF and a voltage rating of 50V or higher. Refer to the application note AN4392 for more details.
The maximum allowed voltage drop across the internal FETs is not explicitly stated in the datasheet. However, according to STMicroelectronics' support, the recommended maximum voltage drop is around 1.5V to ensure reliable operation and minimize power losses.
The TN3015H-6I is rated for operation up to 150°C, but the device's performance and reliability may degrade at high temperatures. It's essential to follow the recommended thermal design guidelines and ensure proper cooling to maintain a safe operating temperature.
To troubleshoot overcurrent protection issues, check the input voltage, output current, and sense resistor values. Ensure that the sense resistor is correctly connected and that the output current is within the specified limits. Also, verify that the device is not overheating, as this can trigger the overcurrent protection.