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參數(shù)資料
| 型號： | L6219 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Stepper Motor Driver(步進(jìn)電機(jī)驅(qū)動器) |
| 中文描述： | 步進(jìn)電機(jī)驅(qū)動器（步進(jìn)電機(jī)驅(qū)動器） |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 172K |
| 代理商： | L6219 |
5/11
L6219
3
The circuit is intended to drive both windings of a bipolar stepper motor.
The peak current control is generated through switch mode regulation.There is a choice of three different current
levels with the two logic inputs I
01
- I
11
for winding 1 and I
02
- I
12
for winding 2.
The current can also be switched off completely.
Functional Description
3.1 Input Logic (I
0
and I
1
)
The current level in the motor winding is selected with these inputs. (See fig. 5). If any of the logic inputs is left
open, the circuit will treat it has a high level input.
Table 6.
3.2 Phase
This input determines the direction of current flow in the windings, depending on the motor connections. The
signal is fed through a Schmidt-trigger for noise immunity, and through a time delay in order to guarantee that
no short-circuit occurs in the output stage during phase-shift.High level on the PHASE input causes the motor
current flow from Out A through the winding to Out B
3.3 Current Sensor
This part contains a current sensing resistor (R
S
), a low pass filter (R
C
, C
C
) and three comparators.Only one
comparator is active at a time. It is activated by the input logic according to the current level chosen with signals
I
o
and I
1
.The motor current flows through the sensing resistor RS.When the current has increased so that the
voltage across R
S
becomes higher than the reference voltage on the other comparator input, the comparator
goes high, which triggers the pulse generator.
The max peak current Imax can be defined by:
I
max
=
3.4 Single-pulse Generator
The pulse generator is a monostable triggered on the positive going edge of the comparator output.The
monostable output is high during the pulse time, toff , which is determined by the time components Rt and Ct.
t
off
= 1.1 · R
t
C
t
The single pulse switches off the power feed to the motor winding, causing the winding current to decrease dur-
ing t
off
. If a new trigger signal should occur during t
off
, it is ignored.
3.5 Output Stage
The output stage contains four Darlington transistors (source drivers) four saturated transistors (sink drivers)
and eight diodes, connected in two H bridge.
I
0
I
1
Current Level
H
H
No Current
L
H
Low current 1/3 I
O
max
H
L
Medium current 2/3 I
O
max
L
L
Maximum current I
O
max
V
10R
s
-------------
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6219 | 制造商:STMicroelectronics 功能描述:STEPPER MOTOR DRIVER 6219 DIP24 |
| L6219_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stepper motor driver |
| L6219D | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:Motor Controller Circuit, 44 Pin, PLCC |
| L6219DS | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Dual Stepper Motor 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 |
| L6219DS013TR | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Dual Stepper Motor 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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