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L6258EX Arkusz danych(PDF) 25 Page - STMicroelectronics

Numer części L6258EX
Szczegółowy opis  PWM controlled high current DMOS universal motor driver
PDF  32 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6258EX Arkusz danych(HTML) 25 Page - STMicroelectronics

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L6258EX
Application information
25/32
Figure 11.
Typical application circuit
4.2
Motor selection
Some stepper motor have such high core losses that they are not suitable for switch mode
current regulation. Furthermore, some stepper motors are not designed for continuous
operating at maximum current. Since the circuit can drive a constant current through the
motor, its temperature might exceed, both at low and high speed operation.
4.3
Unused inputs
Unused inputs should be connected to the proper voltage levels in order to get the highest
noise immunity.
STEPPER
MOTOR
M
12mH 10
Ω
0.33
0.33
21
20
14
35
34
5
OUT2B
SENSE2
OUT2A
SENSE1
OUT1B
OUT1A
PH1
2
I0_1
4
I1_1
3
I2_1
32
I3_1
33
PH2
17
I0_2
15
I1_2
16
I2_2
23
I3_2
22
DISABLE
6
10nF
100nF
1nF
TRI_CAP
7
VS
13,31
VBOOT
12
VCP2
11
VCP1
10
9
GND
1,36
18,19
PWR_GND
VS
27
SIG_GND
28
D97IN626EX
VREF1
26
VREF2
29
EA_IN1
30
EA_OUT1
820pF
1M
25
EA_IN2
24
EA_OUT2
820pF
1M
VREF
8
VDD
VDD(5V)
L6258EX
PWSSO36
PACKAGE
R2 1M
R1 1M



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