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STCC08 数据表(PDF) 9 Page - STMicroelectronics |
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STCC08 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 13 page ![]() STCC08 Application information 9/13 This function is effective whatever the drive and the nature of the load. Figure 7. ACS benefits The ACS clamping capability, from 800 V to 1100 V reduces the stress across RAC resistors during an AC line over-voltage. This provides a robust solution and allows setting high voltage resistors RAC to withstand the ACS clamping voltage instead of the AC line maximum over-voltage. STCC08 AVF alarms configuration Figure 8. Open load and Short circuit ACS discrimination When RSHUNT is removed, the MCU cannot discriminate between an ACS short circuit and open load failure. See Table 9. AC G NEUTRAL R AC1 ACS R AC2 V CC V MAX =V CL AC G NEUTRAL R AC1 ACS R AC2 V CC V MAX =V CL AVF V CC GND R IG AC IN G POWER SWITCH SIGNAL SHAPING AVF DRIVER GATE DRIVER + - MCU 3.3V to 5V V CC V CC AVF GND LOAD LINE NEUTRAL ACS |
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