Page 49 - CNC Robotics

CNC Robotics

L298

This solution can drive until 3 Arrpstn DC ope ration Fig 10 shows a second two phase bipolar stepper
and until 3.5 Ampsof a repetitivepeak current. motor control ciraJ it where the current is controlled
OnFig 8itisshownthedrivingofa twophasebipolar bythe I.C. L6506.
stepper motor ; the needed signals to drive the in-
puts of the l298 are generated, in this example,
from the Ie l 297.
Fig 9 shows an example of P.C.B. designedforthe
application of Fig 8.
FigureS : Two Phase Bipolar Stepper Motor Circuit.
This circuit drives bipolar steppe r motors with winding currents up to 2 A.The diodes are fasl2 A types.
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nOD

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£JIoI;I!IIl£ ~ ~ 1M"' •
Yr.' ft • iiiiil •
II I J t) 1. "
..sse,
SEfItSll

Rs, =R S2 =O.SH
VF'5.1.2V @I= 2 A
Dl loDB:2 A Fast diodes { tITS 200 ns

8113

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