The maximum output power of LNK404EG depends on the input voltage, output voltage, and the transformer design. However, as a general guideline, it can deliver up to 4-6 Watts of output power with a suitable transformer design.
To select the right transformer for LNK404EG, you need to consider the input voltage, output voltage, and the desired output power. Power Integrations provides a transformer design tool on their website that can help you design a suitable transformer. You can also refer to the application notes and design guides provided by Power Integrations.
The recommended PCB layout for LNK404EG involves keeping the high-frequency nodes (such as the drain and source pins) as close to the IC as possible, and using a solid ground plane to reduce EMI. It's also important to keep the input and output circuits separate to minimize noise coupling. Power Integrations provides a reference design and layout guidelines in their application notes.
To ensure EMI compliance with LNK404EG, you need to follow good PCB layout practices, use a suitable EMI filter, and ensure that the transformer is properly shielded. Power Integrations provides guidelines on EMI reduction in their application notes, and you can also refer to the relevant EMI standards (such as CISPR 22) for more information.
The operating temperature range of LNK404EG is -40°C to +125°C. However, the device can be operated at a higher temperature range with derating. It's recommended to refer to the datasheet and application notes for more information on temperature derating.