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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9958 датащи(PDF) 11 Page - STMicroelectronics |
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L9958 датащи(HTML) 11 Page - STMicroelectronics |
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11 / 38 page  L9958 Device description Doc ID 17269 Rev 5 11/38 3.2.2 DIR and PWM inputs The pins DIR and PWM are internally pulled down. The bridge is controlled by these two inputs according to the table below. Figure 5. H-Bridge configurations The outputs can be disabled (set to tri-state) by the Disable and Enable inputs DI and EN. Input DI has an internal pull-up. Input EN has an internal pull-down. During freewheeling phase, an active freewheeling on the Low-Side MOS is automatically set, switching ON the power transistor in parallel to the internal freewheeling diode. Table 6. Control pins DIR, PWM DIR PWM OUT1 OUT2 Bridge Status HHH L Forward L L L L Freewheeling Low LH LH Reverse H L L L Freewheeling low |
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