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參數(shù)資料
| 型號： | L6223A |
| 文件頁數(shù)： | 10/33頁 |
| 文件大?。?/td> | 1335K |
| 代理商： | L6223A |
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The output DMOS is ON
when the corrisponding in-
put is low
OperatingMode
The bit C5 definesthe two available input configu-
rations.
C5 = H: FULL MODE OPERATING
The digital inputshave the followingfunctions:
IN1 drives OUT1
IN2 drives OUT2
IN3 drives OUT3
IN4 drives OUT4
DA/CLEVenables the currentreduction
(see Tab 2)
DA/OPLOselects the motor current control
mode (open or closeloop).
Since each input drives one phase of the motor it
is possible to work either in Half Step or in Full
Step mode. DA/OPLO defines the current control
mode as follow:
– DA/OPLO= H open loop
– DA/OPLO= L closed loop
The reduced current level is enabledby the inputs
IN1, IN2, IN3, IN4 or by DA/CLEV (Tab. 2). The
reduced current value depends from the bits C0,
C1 (TAB. 5). The outputs are disabled when the
inputs are ina prohibitedstate (Tab. 4).
C5 = L, SIMPLIFIEDMODE OPERATING
When in SIMPLIFIEDMODE OPERATINGthe in-
puts assume the following functions:
IN1 drivesPhase A
IN2 drivesPhase B
IN3 ENABLEinput (activeHigh)
IN4 enables the reduced current (Tab. 3)
DA/CLEV enablesthe reduced current (Tab.3)
DA/OPLO selects the motor current control
mode
The SIMPLIFIED MODE OPERATING configura-
tion does not allow the drive of a unipolarmotor in
Half step.
The signal DA/OPLO functions as in FULL Mode
Operation. When the current control is imple-
mented in closed loop, the reduced current level
is enabled by the inputs IN4, DA/CLEV (Tab. 3).
The current reduction depends from the bits C0,
C1 (Tab.5).
Open/Closed Loop Motor Current Control
The logic input DA/OPLO selects the current con-
trol mode as previouslyseen. When in open loop,
the chopping frequency is that one as defined by
the external RC network. In open loop are avail-
able three different t(ON), depending from the bits
C2, C3 (Tab. 6), as a percentage of the RC dis-
charge time t
(dis)
.
When in closed loop two different chopping fre-
quencies are selectable by means of the bit C4
(Tab. 7). The higher is defined by the externalRC
network. The other one is exactely the half. In
closed loop 5 different current levels are avail-
able: the nominal current level and four reduced
current levels (Tab. 5). The nominal current level
is set by an internal reference voltage of 0.5V.
The configuration of bits C0, C1 sets the refer-
ence voltageto apecentageof the nominal value.
TRUTH TABLES
(L = Low; H = High; X = don’t
care)
Table 2
IN1
IN2
IN3
IN4
DA/CLEV
C/R*
H
H
X
X
X
H
X
X
H
H
X
H
H
H
H
H
X
H
X
X
X
X
H
H
*) C/R = H, reducedcurrent
Table 3
IN4
DA/CLEV
C/R
L
X
H*
X
H
H*
H
L
L**
*) Reducedcurrent **) Nominal current
Table 4
IN1
IN2
IN3
IN4
Output Stage
L
L
X
X
DISABLED
X
X
L
L
DISABLED
Table 5
C0
C1
Reduced Current Level (*)
L
L
40%
L
H
50%
H
L
70%
H
H
85%
*) Nominallevel percentage
L6223A
10/33
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| L6225DTR | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6225N | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Dual Full Bridge 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 |
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