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參數(shù)資料
| 型號： | tle 4727 |
| 廠商： | SIEMENS AG |
| 英文描述： | 3-Phase Stepper-Motor Driver(兩相步進式馬達驅(qū)動器) |
| 中文描述： | 三相步進電機驅(qū)動器（兩相步進式馬達驅(qū)動器） |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 209K |
| 代理商： | TLE 4727 |
TLE 4727
Semiconductor Group
3
1998-12-16
Pin Definitions and Functions
Pin No.
1, 2, 19, 20
Function
Digital
control inputs
I
X0,
I
X1
for the magnitude of the
current
of
the particular phase.
I
set
= 500 mA with
R
Sense
= 1
Current Control
I
X1
I
X0
H
H
H
L
L
H
L
L
3
Input Phase 1
; controls the current through phase winding 1. On
H-potential the phase current flows from Q11 to Q12, on L-potential
in the reverse direction.
Oscillator
; works at typ. 25 kHz if this pin is wired to ground across
2.2 nF.
Ground
; all pins are connected at leadframe internally.
Push-pull outputs Q11, Q12
for phase 1 with integrated free-
wheeling diodes.
Resistor
R
1
for sensing the current in phase 1.
Supply voltage
; block to ground, as close as possible to the IC,
with a stable electrolytic capacitor of at least 47
μ
F in parallel with a
ceramic capacitor of 100 nF.
Push-pull outputs Q22, Q21
for phase 2 with integrated free
wheeling diodes.
Logic supply voltage
; internally generated 5 V voltage for logic
supply up to 5 mA; short circuit protected. Block to ground with a
stable electrolytic capacitor of 4.7
μ
F.
Resistor
R
2
for sensing the current in phase 2.
4
5, 6, 15, 16
7, 10
8
9
11, 14
12
13
1)
“No current” in both bridges inhibits the circuit and current consumption will sink
below 3 mA.
Phase Current
Example of Motor
Status
No current
1)
Hold
Normal mode
Accelerate
0
0.14
×
I
set
I
set
1.4
×
I
set
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