The recommended PCB layout for optimal thermal performance involves placing the device on a thermal pad with multiple vias to the bottom layer, and using a large copper area on the top and bottom layers to dissipate heat. A minimum of 2oz copper thickness is recommended.
To ensure reliable operation in high-temperature environments, it is recommended to derate the device's power dissipation according to the temperature derating curve provided in the datasheet. Additionally, ensure good airflow and thermal conduction to the device.
The recommended input capacitors are low-ESR ceramic capacitors with a minimum capacitance of 10uF and a voltage rating of 25V or higher. The recommended output capacitors are also low-ESR ceramic capacitors with a minimum capacitance of 22uF and a voltage rating of 25V or higher.
To troubleshoot issues with the OCP feature, check the input voltage, output current, and sense resistor values to ensure they are within the recommended specifications. Also, verify that the OCP threshold is set correctly and that the device is not overheating.
Yes, the IR3476MTR1PBF is qualified to AEC-Q100 Grade 1, making it suitable for high-reliability and automotive applications. However, it is recommended to consult with the manufacturer and perform additional testing and validation to ensure the device meets the specific requirements of the application.
IR3476MTR1PBF datasheet
by International Rectifier
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