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L9963E 数据表(PDF) 44 Page - STMicroelectronics |
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L9963E 数据表(HTML) 44 Page - STMicroelectronics |
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44 / 184 page  Symbol Parameter Test conditions Min. Typ. Max. Unit VBAT_DIV_RES VBAT Voltage Measurement Resolution Related to ADC + divider (VBATT_MONITOR) Design info 70 V full scale input, Related to ADC + divider (VBATT_MONITOR) 1.33 mV VBAT_SUM_ERR_1 VBAT = C14 C0 = GND Sum of cells accuracy + drift Noise contribution of each single cell is given in Table 39 0.1 V ≤ VCELL < 0.3 V -40 °C < TJ < 125 °C -140 140 mV VBAT_SUM_ERR_2 0.3 V ≤ VCELL < 0.5 V -40 °C < TJ < 125 °C -70 70 mV VBAT_SUM_ERR_3 0.5 V ≤ VCELL < 0.5 V 105 °C < TJ < -125 °C -56 56 mV VBAT_SUM_ERR_4 0.5 V ≤ VCELL < 3.2 V -40 °C < TJ < 105 °C -20 20 mV VBAT_SUM_ERR_5 3.2 V ≤ VCELL < 4.3 V -40 °C < TJ < 105 °C -28 28 mV VBAT_SUM_ERR_6 4.3 V ≤ VCELL < 5 V -40 °C < TJ < 105 °C -36.5 36.5 mV VBATERR VBAT Voltage Measurement Error Related to ADC + divider (VBATT_MONITOR) Tested by SCAN ±0.5% VBAT VBAT_CRITICAL_OV_TH VBAT Over-voltage Fault Threshold Related to ADC + divider (VBATT_MONITOR) Tested by SCAN 70 70.35 70.7 V VBAT_OVHYS (ADC) VBAT Over-voltage Hysteresis Voltage Related to ADC + divider (VBATT_MONITOR) Tested by SCAN 200 mV VBAT_CRITICAL_UV_TH VBAT Under-voltage Fault Threshold Related to ADC + divider (VBATT_MONITOR) Tested by SCAN 9.6 9.95 10.3 V VBAT_UVHYS VBAT Under-voltage Hysteresis Voltage Related to ADC + divider (VBATT_MONITOR) Tested by SCAN 200 mV VBAT_OV_WARNING (COMP) VBAT warning OV Threshold Analog comparator related to VBAT 64 67 70 V VBAT_OV_WARN_HYS (COMP) VBAT warning OV Hysteresis Voltage Analog comparator related to VBAT 2.2 2.5 2.8 V VBAT_UV_WARNING (COMP) VBAT warning UV Threshold Analog comparator related to VBAT 10 11 12 V VBAT_UV_WARN_HYS (COMP) VBAT warning UV Hysteresis Voltage Analog comparator related to VBAT 230 300 370 mV TVBAT_FILT UV/OV digital filter time Tested in SCAN 300 μs 1. The total voltage measurement is used for detecting the OV/UV of the chip inputs. Moreover, it also provides a redundant check for functional integrity and measurement accuracy of the cell voltage. It is realized by summing the voltage of all cell ADC. 2. The OV/UV thresholds of VBAT can be set by user. L9963E VBAT voltage measurement DS13636 - Rev 12 page 44/184 |
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