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STPM098C 数据表(PDF) 52 Page - STMicroelectronics |
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STPM098C 数据表(HTML) 52 Page - STMicroelectronics |
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52 / 110 page  3.11.3.1 Input power monitor (PIN monitor) Input power level is monitored by means of dedicated OP diagnosis based on PIN calculation. A hysteresis on thresholds and filtering time is implemented. If PIN ≥ PIN_off_th occurs for an interval longer than PIN_latency, the fault is asserted and the PIN_OP flag is set. Fault pins are asserted LOW according to the FHC configuration and FOR table. If PIN ≤ PIN_on_th occurs for an interval longer than PIN_latency, the PIN_OP fault is released. PIN_OP clearing depends on FHC configuration. The reference thresholds for the IIN monitor unit PIN_off_th and PIN_on_th can be separately configured through a dedicated PMBus™ register as follows: PINOFFTH=PINMONtℎlsb×>PINOFFTH10:0 (8) PINONTH=PINMONtℎlsb×>PINONTH10:0 (9) Where: PIN_MON_th_lsb is the minimum voltage step [0.3 W]. PIN_OFF_TH/PIN_ON_TH [10:0] are the dedicated PMBus™ configuration bits [0.3 W ~ 500 W]. The default value is PIN_ON_TH = 0x1F4(150 W) and PIN_OFF_TH = 258 (180 W). In case PIN_OFF_TH = 0x000 the input current monitor function is disabled, and no OP detection is performed. Table 43. PIN monitor electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Notes PIN_MON_th_lsb PIN monitoring threshold step - 0.3 - W Application information PIN_MON_th_range PIN monitoring threshold range 0.25 - 500 W Application information 3.12 Output metrics telemetry (OMT) STPM098C implements a full set of telemetry measurements on the converter’s output voltage and currents, and output stages temperature metrics for each control loops. Figure 41. Output telemetry simplified block diagram + - VSENn VRTNn ADC ADC GND RLOADn Nth DrMOS TOUT MONITOR PMBus TOUT_READ VOUT MONITOR PMBus VOUT_READ COUTn VOUTn IOUT REFIN TOUT/FLT SW - + VREF1/CFILT ISENn ADC TSENn Ln IOUT MONITOR PMBus IOUT_READ TSEN UV/OV VOLTAGE MONITOR PHASE OC MONITOR STPM098C Functional description DS14440 - Rev 1 page 52/110 |
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