Application information

HVLED001

14/27

DocID027333 Rev 1

7

Application information

7.1

Operating modes

The HVLED001 QR flyback controller is able to operate either as a single stage high power

factor (HPF) flyback controller or as a DC/DC flyback controller in dual stages topologies. Its

enhanced features are mainly intended to simplify the design and the management of

constant current applications (LED drivers).

Application schematics of the two main topologies are reported in Figure 5 and Figure 6.

Figure 5. High power factor flyback - constant output current