NCP1568G03DBR2G - onsemi

NCP1568G03DBR2G Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  The recommended PCB layout for optimal thermal performance involves placing the device on a thermal pad connected to a large copper area on the PCB, and ensuring good airflow around the device. A 4-layer PCB with a solid ground plane and a thermal relief pattern around the thermal pad is also recommended.
• How do I ensure reliable start-up of the converter in a high-temperature environment?
  To ensure reliable start-up of the converter in a high-temperature environment, it is recommended to add a soft-start circuit to limit the inrush current during start-up, and to use a high-reliability capacitor with a high temperature rating for the input filter.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V, and it is recommended to use a voltage divider or a zener diode to limit the voltage on the EN pin to prevent damage to the device.
• How do I calculate the output voltage ripple of the converter?
  The output voltage ripple of the converter can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
• What is the recommended input filter configuration for EMI compliance?
  The recommended input filter configuration for EMI compliance involves using a π-filter (C-L-C) or a T-filter (L-C-L) with a common-mode choke and X-capacitors, and ensuring that the filter components are selected to meet the required attenuation at the switching frequency and its harmonics.