LNK574DG datasheet by Power Integrations

LNK574DG Frequently Asked Questions (FAQs)

• What is the maximum output power of LNK574DG?
  The maximum output power of LNK574DG is 65W, 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 stability, make sure to use a suitable output capacitor with a low equivalent series resistance (ESR) and a sufficient capacitance value. Also, ensure that the output voltage is within the recommended range of 10V to 40V.
• 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 calculate the minimum input capacitance required?
  The minimum input capacitance required can be calculated using the formula: Cin = (Iin * Δt) / ΔV, where Cin is the input capacitance, Iin is the input current, Δt is the time period, and ΔV is the input voltage ripple.
• What is the maximum junction temperature of LNK574DG?
  The maximum junction temperature of LNK574DG is 150°C. It's essential to ensure that the device operates within the recommended temperature range to prevent overheating and ensure reliability.