High Power Factor LED Ballast using Fairchild Power Switch for Resonant Half-Bridge Converter

This article outlines a proposed solution for a 200 W power supply utilizing the FSFR2100 Fairchild Power Switch (FPS). The input voltage range is 90 to 265 VRMS, and it features six outputs.

The 200 W power supply circuit based on the FSFR2100 FPS is designed to accommodate a wide input voltage range, making it suitable for various applications across different regions with fluctuating power standards. The FSFR2100 is a highly integrated power switch that combines a high-voltage MOSFET and a control IC, optimizing performance and minimizing component count.

In this design, the input voltage is rectified and filtered to provide a stable DC voltage. The FSFR2100 operates in a flyback topology, which is advantageous for its simplicity and ability to provide multiple outputs. The flyback transformer is a critical component, as it stores energy during the switch's on-time and releases it to the output during the off-time.

The circuit features six outputs, which can be configured to provide different voltage levels as required by the load. Each output can be regulated using feedback mechanisms to ensure stable voltage under varying load conditions. This is typically achieved using opto-isolators and voltage feedback circuits that monitor the output voltage and adjust the switching duty cycle accordingly.

Thermal management is crucial for the reliable operation of the power supply. Adequate heat sinking and possibly a fan may be employed to dissipate heat generated by the FSFR2100 and other components. Additionally, protection features such as overcurrent, overvoltage, and thermal shutdown should be integrated to enhance the safety and longevity of the power supply.

Overall, this power supply design provides a robust solution for applications requiring reliable power delivery with multiple outputs, leveraging the efficiency and integration of the FSFR2100 Fairchild Power Switch.This article describes the proposed solution for a 200 W Power Supply using the FSFR2100 Fairchild Power Switch (FPS). The input voltage range is 90 265 VRMS and there are six outputs with. 🔗 External reference