Understanding Power Supply Current Handling Issues: Causes and Solutions

Hesam Moshiri

| Created: July 6, 2023 | Updated: May 14, 2024

Understanding Power Supply Current Handling Issues

Troubleshooting power supply current handling issues is crucial to achieving optimal performance of your electronic devices.

In this video, we will explore the common reasons why a power supply fails to handle the defined output current and provide practical solutions to solving these issues. Whether you are designing a power supply or repairing an existing one, understanding the structure of the power supply is key to quickly solving these problems.

This guide primarily focuses on Flyback-type power supplies that are widely used in applications up to 100W. By examining the block diagrams of Flyback converters, we can gain insight into the intricacies of current control mechanisms.

Design considerations, such as accurate transformer calculations and proper winding techniques, are essential for those creating power supplies from scratch. For repair attempts, it is crucial to evaluate components such as the current sense resistor, Mosfet, and assess the PWM controller for any potential damage.

By following the step-by-step troubleshooting techniques outlined in this guide, you will be equipped with the knowledge and skills necessary to effectively diagnose and rectify power supply current handling issues.

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About Author

About Author

Hesam Moshiri holds an MSc degree in Embedded Systems Design and is interested in Electronic Design and A.I. He also has experience and interest in content/digital marketing. He owns a YouTube channel named "MyVanitar" that talks about electronic projects and design/measurement tips.

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