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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)： | 17/26頁 |
| 文件大?。?/td> | 388K |
| 代理商： | L6280 |
DUAL HALF BRIDGE CONFIGURATION (CH1
and CH2)
In dual half bridge configuration the connection
between the output of the high side drivers and
the corresponding low side drivers has to be
made with external jumpers. The output stage
block diagram shown in figure 20 must be substi-
tuted in side the blank boxes in the following
block diagrams. In dual half bridge configuration,
the time sharing strategy is always used.
Figure20
D0
X
X
X
D1
0
0
0
D2
0
0
1
D3
0
1
0
Tristate left and right
Chopper left, fixed righ
Chopper right, fixed left
Fixed left and right. For these
configurations, see the
corresponding shown in Full
Bridge Configuration paragraph
(Page 14/24).
X
0
1
1
D0
X
D1
1
D2
0
D3
0
Chopper left chopper right
As foreseen when in unipolar motor configura-
tion(see Figure 5), the time sharing strategy is
used (see Figure 10), so when the current in left
winding is controlled, the current in right winding
recirculate trough the low side drivers and not
throughthe sense resistor (Fig. 21).
Figure 21
D0
X
D1
1
D2
0
D3
1
Tristate left, chopperright
During ON time (Q = LOW) the current flows
through high side driver HSD2, right winding and
sense resistor. During OFF time the current recir-
culate through winding and side drivers LSD2A
and LSD2B (Fig. 22).
Figure 22
D0
X
D1
1
D2
1
D3
0
Tristate right, chopper left
During ON time (Q = LOW) the current flows
through high side driver HSD1, left winding and
sense resistor. During OFF time the current recir-
culate through the winding and low side drivers
LSD1A and LSD2A(Fig 23).
L6280
17/26
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