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參數(shù)資料
| 型號： | L6280 |
| 廠商： | 意法半導體 |
| 英文描述： | THREE CHANNELS MULTIPOWER DRIVER SYSTEM |
| 中文描述： | 三通道移動電站驅動系統(tǒng) |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 388K |
| 代理商： | L6280 |
Figure13
Figure14
Figure 15
D0
D1
D2
D3
X
0
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
X
D1
0
D2
0
D3
0
Tristate left and right
All output DMOSs of the channel are OFF (Fig.
14)
D0
D1
D2
D3
X
0
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
X
0
1
1
Fixed both leftand 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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