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參數(shù)資料
| 型號： | L292 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 2.5 A, PZFM15 |
| 封裝： | MULTIWATT-15 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 205K |
| 代理商： | L292 |
Obsolete
Product(s)
- Obsolete
Product(s)
L292
8/13
(DC transfer function from the input of the comparator (VTH) to the motor current (IM)).
Neglecting the VCEsat of the bridge transistors and the VBE of the diodes:
where
: VS = supply voltage VR = 8 V (reference voltage)
(1)
DC TRANSFER FUNCTION
In order to be sure that the current loop is stable the following condition is imposed :
1 + sRC = 1 + s
(pole cancellation)
(2)
from which RC =
LM
(Note that in practice R must greater than 5.6 K
)
The transfer function is then,
(3)
In DC condition, this is reduced to
(4)
OPEN-LOOP GAIN AND STABILITY CRITERION For RC = LM / RM, the open loop gain is:
(5)
In order to achieve good stability, the phase margin must be greater than 45° when | A
β | = 1.
That means that, at fF =
must be | A
β | < 1 (see fig. 7), that is :
G
mo
I
M
V
TH
-----------
s0
=
G
mo
1
R
M
--------
2V
s
V
R
----------
=
L
M
R
M
--------
L
M
R
M
--------
I
M
V
I
-----
s
()
R
2 R4
R
1 R3
---------------
G
mo
1sR
F CF
+
G
moRs
sR
4 Cs
2
R
F CF R4 C
++
----------------------------------------------------------------------------------
=
I
M
V
I
-----
s
()
R
2 R4
R
1 R3
---------------
1
R
s
-------
0.44
R
s
-----------
A
V
----
==
A
β
1
sR
FC
--------------- G
mo
R
s
R
4
-------
R
F
1sR
F CF
+
----------------------------
G
mo Rs
R
4 C
-------------------
1
s1
sR
FCF
+
()
-------------------------------------
==
1
2
πR
F CF
-----------------------
A
β f
1
2
πR
F CF
-----------------------
G
mo Rs
R
4 C
-------------------
R
FCF
2
---------------
1
<
==
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L292 | 制造商:STMicroelectronics 功能描述:IC SWITCH MODE DRIVER 292 |
| L292_03 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SWITCH-MODE DRIVER FOR DC MOTORS |
| L292B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| L292H | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 DC Switch-Mode RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L293 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES |
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