Torex provides a recommended PCB layout in their application note AN102, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The output capacitor selection depends on the output voltage, output current, and ripple requirements. Torex recommends using a low-ESR capacitor with a capacitance value between 10uF to 22uF, and a voltage rating of at least 1.5 times the output voltage. Refer to the application note AN103 for more details.
Although the datasheet specifies a maximum input voltage of 40V, Torex recommends limiting input voltage transients to 42V for a duration of less than 100ms to ensure device reliability and prevent damage.
The XC9276B2540R-G is rated for operation up to 105°C, but derating is required for temperatures above 85°C. Consult the datasheet and application notes for thermal derating guidelines and ensure proper heat sinking and airflow to maintain reliable operation.
The enable pin (EN) is an active-high input. Ensure that the EN pin is properly biased and decoupled. If issues persist, check for voltage drops on the EN pin, and verify that the input voltage is within the recommended range. Consult the datasheet and application notes for more troubleshooting guidance.
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