L6258EP_07 STMICROELECTRONICS [STMicroelectronics], L6258EP_07 Datasheet - Page 12

• Manufacturer Part Number: L6258EP_07
• Description: PWM controlled high current DMOS universal motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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