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E-L6258EP 데이터 시트보기 (PDF) - STMicroelectronics
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E-L6258EP
PWM controlled high current DMOS universal motor driver
STMicroelectronics
E-L6258EP Datasheet PDF : 32 Pages
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Functional description
Figure 4. Current control loop block diagram
L6258EP
POWER AMPL.
VREF
I0
I1
I2
I3
PH
INPUT TRANSCONDUCTANCE
AMPL.
ERROR AMPL.
ia
+
DAC VDAC
-
V
R
+
-
ic
Rc
Cc
ib
Gin=1/Ra
Tri_0
-
+
-
+
Tri_180
VSENSE
Gs=1/Rb
SENSE TRANSCONDUCTANCE
AMPL.
VS
OUTA
LOAD
R
L
L
L
VS
R
S
OUTB
D97IN625
2.2
Input logic (I
0
- I
1
- I
2
- I
3
)
The current level in the motor winding is selected according to this table:
Table 5. Current levels
I3
I2
I1
I0
H
H
H
H
H
H
H
L
H
H
L
H
H
H
L
L
H
L
H
H
H
L
H
L
H
L
L
H
H
L
L
L
L
H
H
H
L
H
H
L
L
H
L
H
Current level
% of IMAX
No Current
9.5
19.1
28.6
38.1
47.6
55.6
63.5
71.4
77.8
82.5
12/32
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