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AN2859 Datasheet(PDF) 7 Page - STMicroelectronics |
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AN2859 Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 29 page ![]() DocID15255 Rev 2 7/29 AN2859 Multiplexed diagnostics 29 Figure 9. Case 7: VSTATE toggles between V1 and V2 at each AC line cycle (except at each zero crossing of the AC line) Figure 10. Case 8: VSTATE toggles between V0 and V3 at each AC line cycle (except at each zero crossing of the AC line) VCC V2 V1 V0 ILoad_1 ILoad_2 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 and ACS2 are failed in diode mode not on the same AC line polarities 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 and ACS2 are failed in diode mode on the same AC line polarities |
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