Infineon provides a reference design and layout guidelines in their application notes and evaluation boards. It's essential to follow these guidelines to ensure proper thermal management and minimize electromagnetic interference (EMI).
The selection of input and output capacitors depends on the specific application requirements, such as voltage rating, capacitance value, and ESR. Infineon recommends using X7R or X5R ceramic capacitors with a voltage rating of at least 1.5 times the maximum input voltage. The capacitance value should be chosen based on the required ripple current and output voltage ripple.
The XDPS21071XUMA1 can tolerate a maximum voltage deviation of ±10% on the input pins. Exceeding this limit may affect the device's performance, reliability, or even cause damage.
Infineon recommends using external OVP and UVP circuits to protect the device from voltage transients and faults. The OVP threshold should be set to around 1.1 times the maximum input voltage, and the UVP threshold should be set to around 0.9 times the minimum input voltage.
The recommended startup sequence is to first apply the input voltage, followed by the enable signal (EN). This ensures that the device is properly initialized and configured before starting to operate.
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XDPS21071XUMA1 Overview
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