FAN4810 is a controller IC for PFC power supply design. This application note describes the theory of operation and step-by-step process to design a high performance Power Factor Corrected (PFC) power supply using the FAN4810 controller IC.
The document provides a step-by-step process for designing a high-performance Power Factor Corrected (PFC) power supply. It details the selection and calculation parameters for key components, including the boost inductor, bulk capacitor, semiconductors, and various circuit filters.
Specific sections cover selecting the value of the boost inductor to minimize peak current, calculating the hold-up time for the bulk capacitor, setting the oscillator frequency using resistors and capacitors, and configuring the gain modulator input circuits. It also explains the parameters for the current sense circuit and the compensation network for the current error amplifier.
| Output Power | 500W |
|---|---|
| Input Voltage Range | 90V to 264VAC |
| Output Voltage | 400VDC |
It complies with the IEC 3000-3-2 standard.
It is typically in the area of 20% of the peak value of the maximum line current.