This document describes the use of FL7732 primary-side regulator (PSR) single-stage controller.
This document serves as a user guide for the Fairchild FEB-L025 evaluation board, which demonstrates a universal line voltage LED ballast solution using the FL7732 Primary-Side Regulator (PSR) single-stage controller. The board is designed to operate with an input voltage range of 90V to 265V AC and provides a constant current output of 350mA at 24V DC.
| Input Voltage Range | 90V to 265V AC |
|---|---|
| Nominal Output Voltage | 24V |
| Nominal Output Current | 350mA |
| Efficiency at 265Vac | 88.40% |
| Power Factor at 120Vac | 0.995 |
| Total Harmonic Distortion at 120Vac | 10.04% |
| Primary MOSFET Temperature | 57.3°C |
| Board Dimensions | 58.0mm (L) x 26.5mm (W) x 18.0mm (H) |
The input voltage range is 90V AC to 265V AC.
The nominal output current is 350mA.
Yes, the FL7732 provides open-LED protection along with short-LED protection.
The efficiency at 220Vac line input voltage is 89.20%.