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HVLED001 Fiches technique(PDF) 14 Page - STMicroelectronics

No de pièce HVLED001
Description  800 V high voltage start-up
PDF  27 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HVLED001 Fiches technique(HTML) 14 Page - STMicroelectronics

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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



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