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參數(shù)資料
| 型號： | M54672SP |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 2-PHASE STEPPER MOTOR DRIVER |
| 中文描述： | 二相步進電機驅動器 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大小： | 104K |
| 代理商： | M54672SP |
2-PHASE STEPPER MOTOR DRIVER
M54672SP
MITSUBISHI <CONTROL / DRIVER IC>
TYPICAL CHARACTERISTICS
SWITCHING CHARACTERISTICS
APPLICATION DESCRIPTION
(1) PHASE INPUT
Phase input decides the output mode.
(2) V
R
(Comparative voltage)
The current level can be continuously changed by changing the
voltage at V
R
continuously.
(3) Current sensor
When the voltage fall at the current sensing resistor and the
selected current level become of the same level, the
comparator triggers the monostable. Then the output stage is
cut off for a certain time (T
OFF
). During this cutoff time, the
current volume decreases slightly and falls short of the
comparative level.
After the cutoff time (T
OFF
), the output stage is in ON state
again. This operation is repeated.
(4) Single pulse generator
At the comparator output rise edge, the monostable is
triggered. The pulse width of the monostable at the external
timing C
T
and R
T
is as follows.
T
OFF
= 0.69 x C
T
x R
T
Retrigger during T
OFF
is neglected.
(5) Analog control
The output current level can be continuously changed by
changing the voltage at V
R
or the feedback voltage to the
comparator.
PHASE
H
L
M
A
H
L
M
B
L
H
TIMING CHART
Switching waveforms
V
MA
-V
MB
or V
MB
-V
MA
T
OFF
= 0.69 x R
T
x C
T
1
1/2
T
ON
T
OFF
V
CH
V
E
t
d
2-phase excitation
Phase 1
Phase 2
1
50
A
60
70
80
40
30
20
10
0
2.5W
1.7W
Ambient Temperature T
a
(
°
C)
2
3
θ
j-c
= 25
°
C/W
Free air
(
θ
c-a
= 48.5
°
C/W)
10cm
2
aluminum heat sink
(
θ
c-a
= 25
°
C/W)
Thermal
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|---|---|
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