LNK625PG datasheet by Power Integrations

LNK625PG Frequently Asked Questions (FAQs)

• What is the maximum output power of LNK625PG?
  The maximum output power of LNK625PG is 25W, but it can be derated based on the input voltage, output voltage, and ambient temperature.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, make sure to use a suitable output capacitor with a low equivalent series resistance (ESR) and a sufficient capacitance value. A minimum capacitance of 2.2uF is recommended.
• What is the purpose of the BYPASS pin?
  The BYPASS pin is used to connect an external capacitor to the internal voltage regulator. This helps to improve the power supply rejection ratio (PSRR) and reduce the noise on the internal voltage regulator.
• How do I optimize the design for low standby power consumption?
  To optimize the design for low standby power consumption, ensure that the input voltage is as low as possible, and use a high-value resistor (e.g., 1MΩ) for the feedback resistor (RFB). Additionally, consider using a low-ESR output capacitor and minimizing the output voltage ripple.
• What is the recommended PCB layout for LNK625PG?
  For optimal performance, it is recommended to follow a star-grounding layout, where the input and output grounds are connected at a single point. Keep the high-current paths short and wide, and avoid routing sensitive signals near the switching node.