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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  DocID17269 Rev 6 11/38 L9958 Device description 37 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 H H H L Forward L L L L Freewheeling Low L H L H Reverse H L L L Freewheeling low |
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