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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6280 датащи(PDF) 15 Page - STMicroelectronics |
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L6280 датащи(HTML) 15 Page - STMicroelectronics |
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15 / 26 page  Figure 13 Figure 14 Figure 15 D0 D1 D2 D3 X 001 Chopper left side; fixed right side (one phase chopping) The left side of the bridge is controlled by the PWM loop while HSD2 is held OFF and LSD2A and 2B are held ON. During ON time (Q low) the current flows thrugh HSD1, motor winding and LSD2A and 2B. During OFF time the current can recirculate through LSD1A, 1B, 2A and 2B (Fig. 15) D0 D1 D2 D3 X 0 0 0 Tristate left and right All output DMOSs of the channel are OFF (Fig. 14) D0 D1 D2 D3 X0 1 0 hopper right side, fixed left side (one phase chopping) As above but with the two channel exchanged each to other (Fig. 16). Figure 16 D0 D1 D2 D3 X0 1 1 Fixed both left and right (brake action) All High side drivers are held OFF while all low side drivers are held ON. The motor winding is short circuited through the low side drivers; the motor’s back EMF acts as a brake voltage (Fig. 17). L6280 15/26 |
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