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UC3517 Fiches technique(PDF) 6 Page - Texas Instruments |
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UC3517 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 12 page UC1517 UC3517 Experimental selection of RT and CT allow the designer to se- lect a small amount of winding current overshoot, as shown above. Although the overshoot may exceed the continuous rated current of the winding and the drive transistors, the dura- tion can be well controlled. Average power dissipation for the driver and motor must be considered when designing sys- tems with intentional overshoot, and must stay within conser- vative limits for short duty cycles. In this application, the ∅A and ∅B outputs of the UC3517 are connected to the current program inputs of the UC3717. This allows the UC3517 inhibit signal to inhibit the UC3717, and also allows half-step operation of the UC3717. Peak motor winding current will be limited to approximately .42V/R1 by chopping. Figure 7. Effects of Different RT & CT on Bilevel Systems Figure 8. Interface to UC3717 Bipolar Driver 6 |
Numéro de pièce similaire - UC3517 |
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Description similaire - UC3517 |
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