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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L9788 데이터시트(PDF) 129 Page - STMicroelectronics |
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L9788 데이터시트(HTML) 129 Page - STMicroelectronics |
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129 / 264 page  DS12308 Rev 4 129/264 L9788 Pre-drivers - IGNITER IGN[1:6] 263 10.2 Short to GND When IGNx pin voltage is lower than Vth_STG_IGN for a filter time at pre-driver is enabled high, short to ground fault is detected. So the fault is latched until Read_Diag_CMD action. Figure 52. IGN pre-drivers diagnosis timing diagram at short to GND Table 55. Pre-driver - IGNITER diagnosis Controlled load Diagnosis & protection type Detected faults @ pre- driver enabled HIGH Detected faults @ pre- driver enabled LOW Internal IGBT/smart IGBT (IGN_DIAG (CONFIG_REG2 D5) = ‘0’) The controlled device is module internal. No diagnosis and protection required -- External IGBT Load (IGN_DIAG = ‘1’) IGNx voltage and current monitoring _ IGNx short to GND _ IGNx open load _ IGNx short to VBAT _ IGNx short to VBAT GADG0512161558PS IGNx_CMD NO Fault NO Fault t t t t t t SHORT-TO-GROUND fault SHORT-TO-GROUND fault happened Filter time for IGN Enabled HIGH Enabled LOW Enabled LOW Read_Diag_CMD Diag_fault V_Pin_IGNx Vth_STG_IGN Driver status IGNx_stg |
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