Infineon provides a recommended PCB layout in the application note AN-1145, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, current, and frequency. A general guideline is to choose a capacitor with a voltage rating of at least 1.5 times the maximum input voltage, and a capacitance value between 1uF to 10uF. Additionally, consider the capacitor's ESR, ESL, and ripple current rating.
The maximum allowed voltage on the bootstrap pin (VBST) is typically limited to the voltage rating of the internal bootstrap diode, which is around 35V. Exceeding this voltage may damage the device.
To ensure proper biasing during startup, make sure the input voltage (VIN) is applied before the enable signal (EN) is asserted. Additionally, ensure that the input voltage is within the recommended range and the output voltage is properly decoupled.
The recommended operating frequency range for the IR25601SPBF is between 100 kHz to 1 MHz. Operating outside this range may affect the device's performance, efficiency, and stability.
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