Torex recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended, and the thermal pad should be connected to a ground plane to reduce thermal resistance.
To ensure stable output voltage, it's essential to follow the recommended input capacitor selection and placement guidelines. Additionally, consider using a soft-start circuit to reduce inrush current and output voltage overshoot. For varying load conditions, add a capacitor in parallel with the output capacitor to improve load transient response.
While the datasheet specifies a maximum input voltage of 20V, it's recommended to limit the input voltage ripple to ≤ 1V to ensure reliable operation and prevent damage to the internal circuitry.
The XC6118N20AMR-G is rated for operation up to 105°C, but it's essential to consider the derating curves for output current and power dissipation at higher temperatures. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
To troubleshoot output voltage instability or oscillation issues, check the input voltage, output capacitor selection, and PCB layout. Ensure that the input capacitor is properly selected and placed, and the output capacitor is sufficient for the desired output voltage. Also, verify that the PCB layout does not introduce unwanted parasitic inductance or capacitance.
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XC6118N20AMR-G Overview
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