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VNF1248F Datasheet(PDF) 11 Page - STMicroelectronics |
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VNF1248F Datasheet(HTML) 11 Page - STMicroelectronics |
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11 / 79 page  Symbol Parameter Test conditions Min. Typ. Max. Unit fCP Charge pump frequency -5% 400 +5% kHz tCP_RISE Charge pump low (CP_LOW diagnostic) rising edge filtering time -5% 60 5% µs tCP_FALL Charge pump low (CP_LOW diagnostic) falling edge filtering time -10% 2.3 10% µs Table 14. External FET gate driver specification Symbol Parameter Test conditions Min. Typ. Max. Unit VGSON_6V Gate-on voltage VS = 6 V, IG = 50 µA 6 - - V VGSON_10V Gate-on voltage VS > 10 V, IG = 50 µA 11.5 - 15 V VGSOFF Gate-off voltage - - 0.5 V VGSMAX Maximum gate voltage (internally limited) - - 20 V tON Gate turn-on VGS = 0.5 V to VGS = 10 V, CGATE = 80 nF - - 3 µs tOFF Gate turn-off Full VGS to VGS < 0.5, CGATE = 80 nF - - 10 µs VGS_UVLO_6V Gate undervoltage lockout VS = 6 V 3.5 - V VGS_UVLO_10V Gate undervoltage lockout VS > 10 V, CGATE_max = 30 nF 7 - - V VG_UVLO_BLK Gate undervoltage lockout blanking Enable at charge pump startup if external FET turn-on is required, and applied after CP_LOW expiration (falling edge) -5% 100 5% µs VG_UVLO_DEGLITCH Gate undervoltage lockout de-glitch filtering time -15% 8 15% µs Table 15. Current sense amplifier Symbol Parameter Test conditions Min. Typ. Max. Unit VSENSE_CM Common-mode input voltage range CS_UV - VS V VSENSE_FSR Differential input voltage full-scale range 0 - 160 mV ISNS_P CSA positive input current VS = 12 V Isense_P = 12 V Isense_N = 11.9 V Gate ON 1.1 1.3 1.5 mA ISNS_N CSA negative input current 100 200 300 μA Table 16. Integrated VSENSE 13-bit ADC Symbol Parameter Test conditions Min. Typ. Max. Unit VSENSE_ADC_CONV Current sense ADC full- scale range resolution VSENSE_ADC[12:0] = min((VSENSE/160 * 8192), 8191) 0 - 8191 - VSENSE_REFRESH Current sense ADC sample rate - 2.4 - kSample/s VSENSE_ACC_6mV Digital current sense accuracy 6 mV < VSENSE_DIFF < 10 mV -10 - +10 % VSENSE_ACC_10mV 10 mV < VSENSE_DIFF < 20 mV -5 - +5 % VSENSE_ACC_20mV VSENSE_DIFF > 20 mV -3 - +3 % VSENSE_ACC_3mV 3 mV < VSENSE_DIFF < 6 mV -17 - +17 % VSENSE_ACC_1.8mV 1.8 mV < VSENSE_DIFF < 3 mV -0.5 - +0.5 mV VNF1248F Electrical specification DS14109 - Rev 7 page 11/79 |
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