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L6258 Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce L6258
Description  PWM controlled high current DMOS universal motor driver
PDF  32 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6258 Fiches technique(HTML) 12 Page - STMicroelectronics

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Functional description
L6258
12/32
Figure 5.
Current control loop block diagram
2.2
Input logic (I0 - I1 - I2 - I3)
The current level in the motor winding is selected according to this table:
DAC
+
-
+
-
VDAC
ia
ic
Rc
Cc
VR
ib
ERROR AMPL.
INPUT TRANSCONDUCTANCE
AMPL.
VS
VS
RL
LL
RS
LOAD
OUTA
OUTB
VREF
I0
I1
I2
I3
PH
Gin=1/Ra
VSENSE
Gs=1/Rb
Tri_180
POWER AMPL.
SENSE TRANSCONDUCTANCE
AMPL.
D97IN625
Tri_0
Table 5.
Current levels
I3
I2
I1
I0
Current level
% of IMAX
HH
HH
No Current
HH
H
L
9.5
HH
L
H
19.1
HH
L
L
28.6
HLH
H
38.1
HLHL
47.6
HL
LH
55.6
HL
L
L
63.5
LH
H
H
71.4
LH
HL
77.8
LHLH
82.5



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