STMicroelectronics EVL6562A-35WFLB evaluation board using the L6562A EVL6562A-35WFLB EVL6562A-35WFLB Fiche De Données
Codes de produits
EVL6562A-35WFLB
Schematic with output voltage and current loop
AN2838
18/23
DocID15099 Rev 2
7
Schematic with output voltage and current loop
All tests described in this document have been done using the schematic in
and
using a TL431 for the output voltage feedback. If a secondary current loop is also needed,
the schematic below can be implemented on the PCB by making the modifications listed in
the schematic below can be implemented on the PCB by making the modifications listed in
The proposed schematic has been designed to drive LEDs with a current rating of 700 mA.
For correct board functionality the minimum output voltage when the current loop is working
is around 30 V. Therefore, the minimum number of LEDs in series that can be connected to
the output must be calculated according to this minimum output voltage value.
For correct board functionality the minimum output voltage when the current loop is working
is around 30 V. Therefore, the minimum number of LEDs in series that can be connected to
the output must be calculated according to this minimum output voltage value.
Figure 27. Electrical schematic with secondary current feedback