LNK353GN datasheet by Power Integrations

LNK353GN Frequently Asked Questions (FAQs)

• What is the maximum ambient temperature for the LNK353GN?
  The maximum ambient temperature for the LNK353GN is 80°C, but it can be derated to 70°C for high-reliability applications.
• How do I ensure the LNK353GN is properly biased for startup?
  The LNK353GN requires a minimum of 0.5V on the BYPASS pin to ensure proper startup. This can be achieved by connecting a 1kΩ resistor from the BYPASS pin to the output voltage.
• What is the recommended layout for the LNK353GN to minimize EMI?
  To minimize EMI, it is recommended to keep the input and output traces as short as possible, and to use a ground plane to shield the device. Additionally, placing a 10nF capacitor between the Drain and Source pins can help reduce EMI.
• Can I use the LNK353GN in a flyback converter topology?
  Yes, the LNK353GN can be used in a flyback converter topology, but it is not recommended due to the device's high voltage rating and the potential for voltage spikes during switching. A more suitable topology for the LNK353GN is a buck converter or a non-isolated offline converter.
• How do I calculate the output voltage of the LNK353GN?
  The output voltage of the LNK353GN can be calculated using the following formula: Vout = (VIN x RFB1) / (RFB1 + RFB2), where RFB1 and RFB2 are the feedback resistors.