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参数资料
| 型号： | L6258E |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO36 |
| 封装： | ROHS COMPLIANT, SOP-36 |
| 文件页数： | 10/31页 |
| 文件大小： | 360K |
| 代理商： | L6258E |
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PWM current control loop
L6258E
18/31
Doc ID 8688 Rev 9
Moreover, having the two references Tri_0 and Tri_180 a triangular shape it is clear that the
transfer function of this block is a linear constant gain without poles and zeros.
3.3
Load attenuation
The load block is composed by the equivalent circuit of the motor winding (resistance and
inductance) plus the sense resistor.
We will considered the effect of the Bemf voltage of the motor in the next chapter.
The input of this block is the PWM voltage of the power amplifier and as output we have the
voltage across the sense resistor produced by the current flowing into the motor winding.
The relation between the two variable is:
so the gain of this block is:
where:
RL = equivalent resistance of the motor winding
RS = sense resistor
Because of the inductance of the motor LL, the load has a pole at the frequency:
ACpw
dB
20
224
1.6
-----------------
log
29.5dB
==
V
sense
V
out
R
L
R
S
+
----------------------
R
S
=
ACload
V
sense
v
out
---------------------
R
S
R
L
R
S
+
----------------------
==
ACload
dB
20
R
S
R
L
R
S
+
----------------------
log
=
Aload
dB
20
0.33
12
0.33
+
------------------------
log
31.4dB
–
==
Fpole
1
2
π
L
R
L
R
S
+
---------------------
-----------------------------------
=
Fpole
1
6.28
12
10
3
–
12
0.33
+
---------------------------
----------------------------------------------
163Hz
==
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6258E_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EA | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EP | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EP_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EX | 功能描述:马达/运动/点火控制器和驱动器 1.5A Stepper Motor RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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