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HVLED001 Datasheet(PDF) 16 Page - STMicroelectronics

Part # HVLED001
Description  800 V high voltage start-up
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HVLED001 Datasheet(HTML) 16 Page - STMicroelectronics

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Application information
HVLED001
16/27
DocID027333 Rev 1
Figure 7. Initial start-up phase
7.1.2
Active mode
It is the normal operational mode. During this state the external MOSFET is driven
accordingly to signals coming from the application in order to regulate the desired output
parameter in the closed loop (peak current control method).
The active mode is exited when abnormal conditions are present or the VCC drops below the
VCC,su threshold. The HVSU is inactive during the active mode.
7.1.3
Stop mode
This state is intended to stop the switching activity without turning off the entire function set,
to quickly restart when abnormal or disabling conditions end. During this state the power
consumption is not minimized and the soft-start procedure is not enabled.



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