參數(shù)資料
型號： NJM3773
廠商： New Japan Radio Co., Ltd.
元件分類： 基準電壓源/電流源
英文描述： DUAL STEPPER MOTOR DRIVER
中文描述： 雙步進電機驅(qū)動器
文件頁數(shù)： 6/9頁
文件大?。?/td> 170K
代理商： NJM3773
NJM3773
I
APPLICATIONS INFORMATION
Current control
The regulated output current level to the motor winding is determined by the voltage at the reference input and the
value of the sensing resistor, R
S
. The peak current through the sensing resistor (and the motor winding) can be
expressed as:
I
M,peak
= V
R
/ R
S
[A]
With a recommended value of 0.5 ohm for the sensing resistor R
, a 0.25 V reference voltage will produce an output
current of approximately 500 mA. R
should be selected for maximum motor current. Be should not to exceed the
absolute maximum output current which is 850 mA. Chopping frequency, winding inductance and supply voltage
also affect the current, but to much less extent.
To improve noise immunity on the comparator inputs (V
and C), the control range may be increased to 0.5 V if R
S
is correspondingly changed to 1 ohm for a maximum output current of 500 mA.
For accurate current regulation, the sensing resistor should be a 0.5 - 1.0 W precision resistor, i. e. less than 1%
tolerance and low temperature coefficient.
Figure 7. Microstepping system where a microcontroller including DACs provides
analog current control voltages as well as digital signals to the NJM3773.
Micro-
controller
D/A
D/A
82 k
82 k
+
4.7
μ
F
20 k
2 700 pF
Phase
Dis
V
Phase
Dis
V
RC
11
1
1
2
2
R1
R2
E
C
E
2
C
GND
M
M
M
M
A1
B1
A2
B2
V
CC
V
V
MM1
MM2
+5 V
3
1
20
22
9
10
7
12
4
19
5, 6,
17, 18
15
21
8
1
1
2
2
RS
RS
14
13
16
STEPPER
MOTOR
V
Pin numbers refer
to DIP package.
+
10
μ
F
0.1
μ
F
GND (V
)
0.1
μ
F
MM
GND (V )
820 pF
0.68
1 k
1 k
0.68
820 pF
10 k
10 k
1000
pF
1000
pF
V
CC
NJM3773
Figure 6. Typical stepper motor driver application with NJM3773.
Phase
Dis
V
Phase
Dis
V
RC
11
1
1
2
2
R1
R2
E
C
E
2
C
GND
12 k
4 700 pF
0.47
0.47
M
M
M
M
A1
B1
A2
B2
V
CC
V
V
MM1
MM2
+5 V
+5 V
3
1
20
22
9
10
7
12
4
19
5, 6,
17, 18
15
21
8
1
1
2
2
RS
RS
14
13
16
STEPPER
MOTOR
V
Pin numbers refer
to DIP package.
+
10
μ
F
0.1
μ
F
GND (V )
GND (V
)
0.1
μ
F
MM
V
CC
NJM3773
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NJM3773D2 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Stepper 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
NJM3773E3 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Stepper Motor Driver 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
NJM3773E3-TE2 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Stepper Motor Driver 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
NJM3773FM2 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Stepper 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
NJM3773FM2-TE3 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Stepper Motor Driver 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
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