BD6757KN データシートの表示（PDF） - ROHM Semiconductor
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BD6757KN
ROHM Semiconductor
BD6757KN Datasheet PDF : 16 Pages
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BD6757KN, BD6889GU
Technical Note
In the case of drive the Stepping Motor using ch1 and ch2 IN/IN input mode of the BD6757KN and BD6889GU
2 Phases
IN1A
INPUT
IN1B
IN2A
IN2B
OUTPUT
OUT1A OUT1B OUT2A OUT2B
Output mode
ch1 / ch2
L
L
L
L
Z
Z
Z
Z
Stand by
H
L
H
L
H
L
H
L
1. CW / CW
L
H
H
L
L
H
H
L
3. CCW / CW
L
H
L
H
L
H
L
H
5. CCW / CCW
H
L
L
H
H
L
L
H
7. CW / CCW
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
1-2 Phases
INPUT
OUTPUT
IN1A
IN1B
IN2A
IN2B OUT1A OUT1B OUT2A
L
L
L
L
Z
Z
Z
H
L
H
L
H
L
H
L
L
H
L
Z
Z
H
L
H
H
L
L
H
H
L
H
L
L
L
H
Z
L
H
L
H
L
H
L
L
L
L
H
Z
Z
L
H
L
L
H
H
L
L
H
L
L
L
H
L
Z
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
OUT2B
Z
L
L
L
Z
H
H
H
Z
Output mode
ch1 / ch2
Stand by
1. CW / CW
2. Z / CW
3. CCW / CW
4. CCW / Z
5. CCW / CCW
6. Z / CCW
7. CW / CCW
8. CW / Z
IN1A
H
L
IN1B H
L
IN2A
H
L
IN2B
H
L
OUT1A
H
L
OUT1B
H
L
H
OUT2A L
OUT2B
H
L
13571357
Fig.14 2 Phases Timing Sequence with IN/IN Input
IN1A
H
L
IN1B H
L
IN2A
H
L
IN2B
H
L
OUT1A
H
L
OUT1B
H
L
H
OUT2A L
OUT2B
H
L
12345678
：High impedance
Fig.15 1-2 Phases Timing Sequence with IN/IN Input
OUT1B
CCW
CW
OUT2A
3
1
5
7
Forward
OUT1A
CW
OUT1B
CCW
CW
OUT2A
3
2
1
4
8
5
6
7
Forward
OUT1A
CW
Reverse
OUT2B
CCW
Fig.16 Torque Vector of 2 Phases Mode
Reverse
OUT2B
CCW
Fig.17 Torque Vector of 1-2 Phases Mode
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11/15
2009.06 - Rev.A
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