STMicroelectronics STLDC08 Demo Board STEVAL-ILL039V1/2 STEVAL-ILL039V2 STEVAL-ILL039V2 Fiche De Données
Codes de produits
STEVAL-ILL039V2
Application information
STLDC08
20/29
Doc ID 18476 Rev 1
Another important parameter is the drain source breakdown voltage. During the ON state,
the potential of the LX point is 0 V, while during the OFF state the potential of this point rises
to the output voltage plus the forward voltage of the D1. Therefore, the absolute V
the potential of the LX point is 0 V, while during the OFF state the potential of this point rises
to the output voltage plus the forward voltage of the D1. Therefore, the absolute V
DS
rating
of the main switch must be greater than this voltage to prevent main switch damage.
Figure 19.
Current diagram ON state
C
IN
C
OUT
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
ON state
AM07849v1
C
IN
C
OUT
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
ON state
AM07849v1
Figure 20.
Current diagram OFF state
C
IN
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
OFF state
C
OUT
AM07850v1
C
IN
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
OFF state
C
OUT
AM07850v1