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参数资料
| 型号： | L6280 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 4.4 A, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 7/26页 |
| 文件大小： | 8983K |
| 代理商： | L6280 |
Figure 13
Figure 14
Figure 15
D0
D1
D2
D3
X0
0
1
Chopper left side; fixed
right side (one phase
chopping)
The left side of the bridge is controlled by the
PWM loop while HSD2 is held OFF and LSD2A
and 2B are held ON. During ON time (Q low) the
current flows thrugh HSD1, motor winding and
LSD2A and 2B. During OFF time the current can
recirculate through LSD1A, 1B, 2A and 2B (Fig.
15)
D0
D1
D2
D3
X
0
Tristate left and right
All output DMOSs of the channel are OFF (Fig.
14)
D0
D1
D2
D3
X0
1
0
hopper right side, fixed
left side (one phase
chopping)
As above but with the two channel exchanged
each to other (Fig. 16).
Figure 16
D0
D1
D2
D3
X0
1
Fixed both left and right
(brake action)
All High side drivers are held OFF while all low
side drivers are held ON. The motor winding is
short circuited through the low side drivers; the
motor’s back EMF acts as a brake voltage (Fig.
17).
L6280
15/26
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