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HVLED001BTR Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce HVLED001BTR
Description  High power factor flyback controller with constant voltage primary-sensing and ultra-low standby consumption
PDF  33 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HVLED001BTR Fiches technique(HTML) 17 Page - STMicroelectronics

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DS12748 Rev 2
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HVLED001B
Application information
33
7
Application information
7.1
Operating modes
The HVLED001B 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-stage
topologies. It‘s 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 17 and Figure 18.
Figure 17. High power factor flyback - Primary side regulated constant output voltage



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