Motor steper

BIPOLAR STEPPER MOTOR DRIVER
High Current Bipolar Stepper Motor Controller circuit is based on chopper drive. Chopper drive is a method of providing a constant current source to a device. Chopper drive allows for use of higher voltage power supply for better performance and higher speed. It is uses SGS Thomson's L297 and L298 controller IC's. !Logic supply - 5 VDC @ 300 mA !Motor Supply - 8 to 30 VDC ! Connection via 10-pin Box Header for easy interface with any microcontroller development ! External or internal voltage reference option via jumper !Preset for current adjustment !High speed switching diodes for L298 IC protection

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R1 470E D1 G LED C4 CN3 BH10 EN H/F DIR SY N VCC 1 3 5 7 9 CN4 BH10 VREF 1 3 5 7 9 2 4 6 8 10 2 4 6 8 10 CON CLK RST HOME J1 JUM SY N HOME EN CON DIR CLK H/F RST VREF VCC R5 18K 1 3 10 11 17 18 19 20 U1 L297 A B C D INH1 INH2 4 6 7 9 5 8 5 7 10 12 6 11 1A1 1A2 2A1 2A2 1EN 2EN 2Y 1 SENS1 SENS2 14 13 C6 R4 R6 C7 470E 470E 1 15 2Y 2 1E 2E R2 22K Logic Supply + C1 100uF/25V C2 0.1uF CN1 +V1 D2 R LED CN2 +V2 R3 1.8K + C3 470uF/35V U2 L298 1Y 1 1Y 2 2 3 C5 0.1uF D3 D4 D5 D6 1N5822 1 2 Motor Supply

16

12

4

3.3nF

SY NC HOME EN CONTROL CW/CCW CLK HLF/FULL RST

13 14 9 D7 VCC D8 D9 D10 1N5822

GND

VCC

VCC1

0.01uF

0.01uF

PR1 5K PRESET

15

VREF

C8 0.1uF

2

GND

R7 0.5E, 3W

R8 0.5E, 3W

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8 2

MOTOR STEPPER

MG1

VCC2

OSC

VS

3

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