You can check Application Note 15 (AN-15) page 28, AN-14 page 11, AN-47 page17. Hope you get a feeling of the PCB layout for Power Integrations products or any switching power supply.

When it comes to PCB assembly, there are several do's and don'ts to keep in mind, regardless of the specific design. Here are some important guidelines to follow:

Do's:

1. Plan and layout the PCB carefully: Proper planning and layout are crucial for successful PCB assembly. Consider factors such as component placement, signal integrity, and thermal management.
2. Ensure proper component orientation: Double-check that all components are correctly oriented and aligned with the PCB design. Incorrect component orientation can lead to electrical issues and cause the circuit to malfunction.
3. Follow design for manufacturability (DFM) guidelines: Adhere to DFM guidelines provided by your manufacturer to ensure that your PCB design can be manufactured efficiently and without complications.
4. Use high-quality components: Choose reliable and reputable suppliers for your components. Low-quality components can negatively impact the performance and longevity of your PCB.
5. Test and inspect your PCB: Before finalizing the assembly, thoroughly test and inspect the PCB for any potential issues, such as short circuits, open circuits, or faulty components. This will help identify problems early on and prevent further complications.

Don'ts:

1. Overlook the importance of soldering: Improper soldering techniques can result in weak joints, poor connections, or solder bridges. Take the time to learn proper soldering techniques or work with skilled technicians to ensure reliable soldering.
2. Ignore ESD precautions: Electrostatic discharge (ESD) can damage sensitive electronic components. Always follow proper ESD precautions, such as using grounded workstations, wrist straps, and ESD-safe packaging.
3. Neglect thermal considerations: Heat dissipation is crucial for the longevity and performance of your PCB. Ensure proper thermal management by providing adequate clearance around heat-generating components and using appropriate heat sinks or fans when necessary.
4. Rush through the assembly process: PCB assembly requires attention to detail and precision. Avoid rushing through the process, as it can lead to mistakes and overlooked issues that may cause failures later on.
5. Skip documentation and labeling: Documenting the assembly process and labeling components and connectors are essential for troubleshooting and future maintenance. Neglecting proper documentation can make it difficult to identify and resolve issues efficiently.

By following these do's and don'ts, you can significantly increase the chances of a successful PCB assembly, regardless of the design. Remember to consult with experienced professionals or refer to industry best practices for specific design considerations.