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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9963E датащи(PDF) 46 Page - STMicroelectronics |
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L9963E датащи(HTML) 46 Page - STMicroelectronics |
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46 / 184 page  Symbol Parameter Test conditions Min. Typ. Max. Unit VCUR_SENSE Input voltage for ADC conversion Application info. Absolute voltage on ISENSEP/M pins. Same as operating range -300 +300 mV VDIFF_CUR_SENSE Differential input voltage. ISENSEP- ISENSEM range Design info -150 +150 mV ICELLRES Current Measurement Resolution ±1750 A full scale input assuming 18- bit signed data output and an Rshunt = 0.1 mΩ Not tested, application info 13.33 mA VISENSE_RES Voltage Measurement Resolution ±175 mV full scale input assuming 18- bit signed data output Design info 1.33 μV ICELLERR Current Measurement Error VDIFF_SENSE = V(ISENSE+) - V(ISENSE-) -150 mV ≤ VDIFF_CUR_SENSE < -60 mV, -40 °C < TJ < 125 °C -0.5 0.5 % ICELLERR2 -60 mV ≤ VDIFF_CUR_SENSE ≤ 60 mV -40 °C < TJ < 125 °C -0.3 0.3 mV ICELLERR3 60 mV < VDIFF_CUR_SENSE ≤ 15 0 mV, -40 °C < TJ < 125 °C -0.5 0.5 % ICURR_SENSE_OC_SLEEP ISENSE Over-current Fault Threshold in Cyclic Wakeup Tested in SCAN (76.8A with Rshunt = 0.1 mΩ) 0 10.55488 mV ICURR_SENSE_OC_NORM ISENSE Over-current Fault Threshold in Normal 0 175 mV ICELL_OC_SLP_RES ISENSE Over-current Fault Threshold Resolution in Cyclic Wakeup Application info (+/-3.4048A with Rshunt = 0.1 mΩ) 340.48 μV ICELL_OC_NORM_RES ISENSE Over-current Fault Threshold Resolution in Normal Application info (+/-13.3 mA with Rshunt = 0.1 mΩ) 1.33 μV VISENSE_OPEN_thr ISENSE pins open threshold voltage 1.5 1.7 1.9 V TCURR_SENSE_OPEN_filter Open digital filter time Tested in SCAN 60 μs 4.7 Cell balancing The Sx and Bx_x-1 pins are used to balance the charge of the cells by discharging the ones with a higher SOC (State Of Charge). Balancing can be performed either with external or internal MOSFETs. [DOS_UR8I_45010]Cell balance drivers are powered by VBAT stack voltage. Hence, balancing is theoretically possible even at low cell voltages, with an exception for cell 14. In case VCELL14 < VCELL14_BAL_MIN, the correspondent balancing circuitry will not operate properly and false overcurrent detection may occur. 4.7.1 Passive cell balancing with internal MOSFETs The internal balancing requires only on-board resistors, and the MOSFETs which are embedded in the chip. L9963E Cell balancing DS13636 - Rev 4 page 46/184 |
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