User Manual Q&AAnswer
Dec 08, 2025 - 04:42 PM
To select the appropriate input capacitor for the MP2130 and prevent overshoot voltage that could potentially damage the IC, follow these steps outlined in the user guide:
1. Read the manual carefully to understand the source of overshoot voltage and the necessity of an input capacitor.
2. Calculate the average value of the inductor current to ensure that the LS-FET current does not exceed the negative current limit.
3. Estimate the lowest negative inductor current during soft-stop using the equation provided in the manual.
4. Select an input capacitor that can absorb overshoot voltage and meets the minimum capacitance value recommended in the manual.
5. Install the input capacitor according to the manufacturer's instructions.
By following these steps, you can choose the right input capacitor for the MP2130, ensuring the protection of the IC from overvoltage damage and maintaining the proper functioning of the device.
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