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L9918 数据表(PDF) 24 Page - STMicroelectronics |
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L9918 数据表(HTML) 24 Page - STMicroelectronics |
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24 / 109 page  4 High side driver output - EXC pin Unless otherwise specified, all the electrical characteristics provided in this chapter refers to Tj between -40 °C and 150 °C. 4.1 EXC electrical characteristic Table 9. EXC electrical characteristics Symbol Parameter Notes Min. Typ. Max. Unit Ron Ron excitation driver Tj = 150 °C; Isunk = 5 A 0.1 Ω VFcircuit Freewheeling circuit Isourced = 5 A -1.5 -0.1 V IFleak EXC leakage current VB+ = 50 V; VF = 0 V -15 0 µA IFELD_MAXB1 Excitation driver default current limitation thresholds (IFELD_MAXB NVM bits) Tj = 25 °C 13 A IFELD_MAXB2 Tj = 25 °C I_max value (NVM) A IFELD_MAXB3 Tj = 25 °C 11 A IFELD_MAXB4 Tj = 25 °C 12 A IFmeas_acc,1 Excitation driver current sense and current limitation accuracy 0 < IEXC < 4 A -0.2 +0.2 A IFmeas_acc,2 4 < IEXC < 11 A -5 5 % IFmeas_acc,3 11 < IEXC < 13 A -8 8 % IFLIM_LDslope Current limitation threshold slope when device passes from LIN to default regulation 0.337 0.375 0.413 A/s IFOCP Excitation driver overcurrent protection value Tj = 25 °C 13 15 17 A TFOC_filter Over-current filter time 6 7 8 µs VFONdet Voltage threshold ON-state detection 0.9 1.1 1.3 V VFONdet_hyst Hysteresis on voltage threshold ON-state detection 0.6 0.65 0.7 V fFSW,1 EXC switching frequency(PWM_FREQ) 190 200 210 Hz fFSW,2 228 240 252 Hz fFSW,3 285 300 315 Hz fFSW,4 380 400 420 Hz fFSWpreexc EXC switching frequency in pre-excitation 23.75 25 26.25 Hz SRfall Falling voltage slew rate for excitation driver VB = 14 V, R = 270 Ω (Measurement, performed between 80 % and 20 % of the slope with NVM bits any SR_EXC) 0.8 1.9 3 V/µs L9918 High side driver output - EXC pin DS13000 - Rev 2 page 24/109 |
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