3.2 W LED power supply based on HVLED805 Introduction
This document details the design and evaluation of a 3.2W LED power supply based on the HVLED805 switching regulator. The HVLED805 combines a quasi-resonant PWM controller chip with an 800V avalanche rugged power MOSFET in a single package. It utilizes primary sensing feedback to provide constant current (CC) and constant voltage (CV) regulation, eliminating the need for optocouplers or secondary current sensors.
| Output power consumption | 3.2 W |
|---|---|
| Output current | 200 mA |
| Input voltage range | 90 - 265 Vac |
| Mains frequency | 50 - 60 Hz |
| Target average efficiency | >70% |
It is a quasi-resonant (QR) current mode controller IC specifically designed for QR ZVS flyback converters.
No, it eliminates the need for the optocoupler, the secondary voltage reference, and the current sensor.
The demonstration board is identified as STEVAL-ILLO37V1.