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How the high-power, dual-bridge chips L293, L293E and L298N simplify design and improve reliability of stepper motor drive circuits

  • 2013-09-19
  • 121.71KB
  • Points it Requires : 2

           In addition to simplifying design problems, a family of dedicatedchips improves stepper-motor drive-circuit reliability by significantly reducing the component count.The L293, L293E and L298N dual-bridge ICs (see box, ”inside the dual-bridge ICs”) significantly reduce the problems encountered in the design of stepper-motor drive circuitry. They can, for example,simplify the design and increase the efficiency of constant-current choppers. And with a single chip replacing the transistors and predriver stages, circuit performance improves. Best of all, the devices have applications in complex as well as basic driver networks.

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