l298n芯片原理图_cr5229芯片引脚参数

l298n芯片原理图_cr5229芯片引脚参数L298N芯片手册完成版.pdfVIPAPPLICATION NOTEHIGH-POWER, DUAL-BRIDGE ICsEASE STEPPER-MOTOR-DRIVE DESIGNI

L298N芯片手册完成版.pdfVIP   APPLICATION NOTE   HIGH-POWER, DUAL-BRIDGE ICs   EASE STEPPER-MOTOR-DRIVE DESIGN   In addition to simplifying design problems, a family of dedicatedchips improves stepper-motordrive-circuit   reliability by significantly reducing the component count.   The L293, L293E and L298N dual-bridge ICs (see constant-current choppers. And with a single chip   box, ”inside the dual-bridge ICs”) significantly redu- replacing the transistors and predriver stages, cir-   ce the problems encountered in the design of step- cuit performance improves. Best of all, the devices   per-motor drive circuitry. They can, for example, have applications in complex as well as basic driver   simplify the design and increase the efficiency of networks.   Figure 1 : The Simplest Stepper-motorDrive Technique is the Basic L/R Configuration. AddingSeries Re-   sistors and Raising the Supply to Make an L/4R Drive Improves Torque at High Steps rates but   Reduces Efficiency.   AN238/0488 1/8   APPLICATION NOTE   SIMPLEST DESIGN IS AN L/R DRIVE useandL298N).However,if youplanto run the mo-   tor continuouslywith two phases on, dissipationwill   The simplest motor-drive configuration (fig. 1) con-   be the limiting factor.   sists of a µC that performs the translator function in   software (see box, ”Generating switching sequen- You can improve the performance of this basic L/R   ces”) and drives the motor througha L293dual brid- drive by increasing the series resistanceand raising

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