L6258E(2004) 데이터 시트보기 (PDF) - STMicroelectronics
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L6258E Datasheet PDF : 24 Pages
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L6258E
Figure 6. Current Control Loop Block Diagram
POWER AMPL.
VREF
I0
I1
I2
I3
PH
INPUT TRANSCONDUCTANCE
AMPL.
ERROR AMPL.
ia
+
DAC VDAC
-
VR
+
-
ic
Rc
Cc
ib
Gin=1/Ra
VSENSE
Tri_0
-
+
-
+
Tri_180
Gs=1/Rb
SENSE TRANSCONDUCTANCE
AMPL.
VS
OUTA
LOAD
RL
LL
VS
RS
OUTB
D97IN625
3.2 Input Logic (I0 - I1 - I2 - I3)
The current level in the motor winding is selected according to this table:
Table 5.
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
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
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
88.9
92.1
95.2
98.4
100
8/24
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