L6258EP_07 STMICROELECTRONICS [STMicroelectronics], L6258EP_07 Datasheet - Page 25

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

L6258EP
4.2
4.3
Figure 10. Typical application circuit
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.
Unused inputs
Unused inputs should be connected to the proper voltage levels in order to get the highest
noise immunity.
VS
100nF
10nF
1nF
DISABLE
TRI_CAP
VBOOT
VCP1
VCP2
PH1
I0_1
I1_1
I2_1
I3_1
PH2
I0_2
I1_2
I2_2
I3_2
VS
EA_IN1
2
10
11
12
13,31
7
4
3
32
33
17
15
16
23
22
6
29
1M
EA_OUT1
R1 1M
820pF
30
L6258EP
PWSSO36
PACKAGE
EA_IN2
25
1M
EA_OUT2
R2 1M
820pF
18,19
1,36
24
21
20
14
35
34
27
28
26
5
9
8
OUT2B
SENSE2
OUT2A
SENSE1
OUT1B
OUT1A
GND
PWR_GND
V
SIG_GND
VREF1
VREF2
DD
0.33
0.33
D97IN626EP
Application information
V
VREF
M
DD
(5V)
STEPPER
MOTOR
12mH 10Ω
25/32