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STPM098C データシート(PDF) 26 Page - STMicroelectronics |
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STPM098C データシート(HTML) 26 Page - STMicroelectronics |
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26 / 110 page  PMBus™ flag signaling Source diagnosis Fault output pin signaling Fault description PIN_OP = 1 PIN monitor FAULT = SM_ALERT = VRRDY1 = VRRDY2 = POWERIN_ALERT = 0 Input Overpower VOUTn_UV = 1 VOUT monitor FAULT = SM_ALERT = VRRDY1n = 0 Undervoltage on VSENn [n = 1, 2] VOUTn_OV = 1 VOUT monitor FAULT = SM_ALERT = VRRDY1n = 0 Overvoltage on VSENn [n = 1, 2] IOUTn_OC_FAST = 1 IOUT monitor FAULT = SM_ALERT = VRRDYm = 0 FAST over-current on ISENn [n = 1, 2, 3, 4, 5, 6, 7, 8] [m = 1, 2] IOUTn_OC_SLOW = 1 IOUT monitor FAULT = SM_ALERT = VRRDYm = 0 SLOW Overcurrent on ISENn [n = 1, 2, 3, 4, 5, 6, 7, 8] [m = 1, 2] IOUTn_OC_SUM = 1 IOUT monitor FAULT = SM_ALERT = VRRDY1n = 0 SLOW Overcurrent on VSENn [n = 1, 2] TSENn_OT_SD = 1 TSEN monitor FAULT = SM_ALERT = VRRDYn = VR_HOT = 0 Overtemperature shutdown on TSENn [n = 1, 2] TSENn_OT_WR = 1 TSEN monitor VR_HOT = 0 Overtemperature warning on TSENn [n = 1, 2] TSENn_OV = 1 TSEN monitor FAULT = SM_ALERT = VRRDYn = 0 Overvoltage on TSENn [n = 1, 2] TSENn_UV = 1 TSEN monitor FAULT = SM_ALERT = VRRDYn = 0 Undervoltage on TSENn [n = 1, 2] FBn_NO_CONN = 1 FB disconnection monitor FAULT = SM_ALERT = VRRDYn = 0 Feedback disconnection on VSENn [n = 1, 2] IOUTn_SHARING_WRM = 1 IOUT monitor No pin signaling Phase current overbalancing [n = 1, 2, 3, 4, 5, 6, 7, 8] IOUTn_UC_ = 1 IOUT monitor FAULT = SM_ALERT = VRRDYn = 0 Phase undercurrent (phase fault) [n = 1, 2, 3, 4, 5, 6, 7, 8] PMBUS_ERR = 1 PMBus™ monitor SM_ALERT = 0(1) PMBus™ comm fault NVM_CRC_FAIL = 1 NVM data CRC check FAULT = SM_ALERT = VRRDY1 = VRRDY2 = 0 NVM data CRC check SRR_CRC_FAIL = 1 SRR data CRC check FAULT = SM_ALERT = VRRDY1 = VRRDY2 = 0 SRR data CRC check NA MBIST FAULT = SM_ALERT = VRRDY1 = VRRDY2 = 0 MBIST failure ABIST_FAIL = 1 ABIST FAULT = SM_ALERT = 0(2) BIST failure 1. Configurable through PMBus™ command STATUS_CML. 2. Configurable through PMBus™ command MFR_FAULT_CONFIG_1 bit 8. 3.4.2 Fault reaction scenarios Here below, the scenarios of each different fault case are described separately. In case multiple faults take place at the same time the following priority in reaction is used: • Latched fault • Ignored fault STPM098C Functional description DS14440 - Rev 1 page 26/110 |
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