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參數(shù)資料
| 型號： | L6219R |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | STEPPER MOTOR DRIVER |
| 中文描述： | 步進(jìn)電機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 115K |
| 代理商： | L6219R |
5/10
L6219R
FUNCTIONAL DESCRIPTION
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
Input Logic (I
0
and I
1
)
The current level in the motor winding is selected with these inputs. (See fig. 2)
If any of the logic inputs is left open, the circuit will treat it has a high level input.
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
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 RS 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
=
See figures 4, 5 and 6 for maximum allowable output current and reference voltage versus V
s
supply.
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 toff.If a new trigger signal should occur during toff, it is ignored.
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 V
3
I
O
max
H
L
Medium current 2/3 I
O
max
L
L
Maximum current I
O
max
V
10R
s
-------------
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6219D | STEPPER MOTOR DRIVER |
| L6219DS | STEPPER MOTOR DRIVER |
| L6219DSA | STEPPER MOTOR DRIVER FOR AUTOMOTIVE RANGE |
| L6219DS | DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| L6221 | QUAD DARLINGTON SWITCH |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6219R_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stepper motor driver |
| L6219R013TR | 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 |
| L6219-S24-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| L6219-S24-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| L621C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|120V V(RRM)|46A I(T) |
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