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AN2859 Datasheet(PDF) 6 Page - STMicroelectronics

Part # AN2859
Description  Multiplexed diagnostics of AC switches using two STCC08
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2859 Datasheet(HTML) 6 Page - STMicroelectronics

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Multiplexed diagnostics
AN2859
6/29
DocID15255 Rev 2
Figure 7. Case 5: VSTATE toggles between V1 and V3 at each AC line cycle
(except at each zero crossing of the AC line)
Figure 8. Case 6: VSTATE toggles between V2 and V3 at each AC line cycle
(except at each zero crossing of the AC line)
V2
V1
V0
ILoad_1
ILoad_2
VCC
VCC
R1
R2
R3
R4
VSTATE
VAVF2
VAVF1
AVF
AVF
AC
AC
V
/COM
CC
RAC
V
/COM
CC
ACS2
ACS1
Load1
Line
Load2
Line
ILoad_2
ILoad_1
RShunt
RAC
RShunt
VAC
VAC
VSTATE
STCC082
STCC081
V3
IN2
IN1
G
G
VAC
VAC
ACS1 is failed in diode mode and ACS2 is not in conducting state
V2
V1
V0
ILoad_1
ILoad_2
VAC
VAC
VCC
VCC
R1
R2
R3
R4
VSTATE
VAVF2
VAVF1
AVF
AVF
AC
AC
V
/COM
CC
RAC
V
/COM
CC
ACS2
ACS1
Load1
Line
Load2
Line
ILoad_2
ILoad_1
RShunt
RAC
RShunt
VSTATE
STCC082
STCC081
V3
IN2
IN1
G
G
VAC
VAC
ACS1 is not in conducting state and ACS2 is failed in diode mode



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