STCC08 Datasheet, PDF (10/13 Pages) STMicroelectronics – AC switch failure mode detector

Application information
STCC08
Table 9. STCC08 status truth table with R_SHUNT removed
IN (MCU generated)
AVF
MCU DIAGNOSTIC
0
Open collector
AC switch OK
0
Open collector to 0 toggle
Diode mode
0
0
Short circuit or open lead
1
0
AC switch OK
1
Open collector
Open AC switch
STCC08 ZVS application
Figure 9. ZVS application schematic
NEUTRAL
ACS
G
GATE DRIVER
+
-
3.3V to 5V
V_CC
IN
LINE
R_AC
V_CC
AC
POWER SWITCH
SIGNAL SHAPING
AVF DRIVER
ZVS
GND
V_CC
MCU
The gate driver drives an ACS while the failure detector is used independently for ZVS
detection
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