STMicroelectronics provides a recommended PCB layout in the application note AN5275, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
The input capacitor selection depends on the input voltage, current, and ripple requirements. 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. Consult the datasheet and application notes for more specific guidance.
The maximum allowed voltage drop across the internal FETs is not explicitly stated in the datasheet. However, according to STMicroelectronics' support, the recommended maximum voltage drop is around 0.5V to 1V to ensure reliable operation and minimize power losses.
The PD55015STR-E is rated for operation up to 125°C (TJ). However, the device's performance and reliability may degrade at high temperatures. It's essential to follow the recommended thermal design guidelines and consider derating the device's performance at elevated temperatures.
The PD55015STR-E has an internal overcurrent protection (OCP) feature. To implement OCP, connect a sense resistor (Rs) between the VIN pin and the GND pin. The OCP threshold is set by the value of Rs. Consult the datasheet and application notes for more detailed information on OCP implementation.
PD55015STR-E datasheet
by STMicroelectronics
