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L6711TR 数据表(PDF) 21 Page - STMicroelectronics |
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L6711TR 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 50 page  L6711 Current reading and current sharing control loop 21/50 current information of each phase, information about the total current delivered (IDROOP = IINFO1 +IINFO2 + IINFO3) and the average current for each phase (IAVG = (IINFO1 + IINFO2 + IINFO3)/3) is taken. IINFOX is then compared to IAVG to give the correction to the PWM output in order to equalize the current carried by the three phases. Since Rg is designed considering the OC protection, to allow further flexibility in the system design, the resistor in series to CSx+ can be split in two resistors as shown in Figure 7. Figure 7. Inductor current sense Design Equations: R gRC () L R L C g ⋅ ------------------ = R gRC () R ga () + Rg = |
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