HVLED805 is an 800V avalanche rugged internal power MOSFET LED driver from ST with 5% accuracy on constant LED output current, no optocoupler required, quasi-resonant (QR) zero voltage switching (ZVS) operation, internal HV start-up circuit, open or short LED string management, automatic self supply, input voltage feed-forward for mains independent cc regulation.
The HVLED805 is a high-voltage primary switcher intended for operating directly from the rectified mains with minimum external parts. It combines a high-performance low-voltage PWM controller chip and an 800V, avalanche-rugged power MOSFET in the same package. The device is designed for ZVS (zero voltage switching) fly-back LED drivers, providing constant output current regulation using primary-sensing feedback, which eliminates the need for an optocoupler.
| Maximum switching frequency | 166 kHz |
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The device supports a maximum drain-to-source voltage of 800 V.
The maximum switching frequency is limited to 166 kHz.
The typical quiescent current is 1.4 mA.