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參數(shù)資料
| 型號： | LMD18245T |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | 3A, 55V DMOS Full-Bridge Motor Driver |
| 中文描述： | STEPPER MOTOR CONTROLLER, 6 A, ZFM15 |
| 封裝： | POWER, TO-220, 15 PIN |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 647K |
| 代理商： | LMD18245T |
The Typical Application
(Continued)
QUARTER STEP DRIVE WITH TORQUE
COMPENSATION
Figure 13 shows the winding currents and lookup table for a
quarter step drive (four microsteps per full step) with torque
compensation.
DS011878-26
Top Trace: Phase A Winding Current at 1A/div
Bottom Trace: Phase B Winding Current at 1A/div
Horizontal: 2ms/div
*250 steps/second
90 ELECTRICAL/FULL STEP
÷
4 MICROSTEPS/FULL STEP = 22.5 ELECTRICAL/MICROSTEP
α
0
|cos(
α
)|
1
0.924
0.707
0.383
0
0.383
0.707
0.924
1
0.924
0.707
0.383
0
0.383
0.707
0.924
D A
15
14
11
6
0
6
11
14
15
14
11
6
0
6
11
14
DIRECTION A
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
|sin(
α
)|
0
0.383
0.707
0.924
1
0.924
0.707
0.383
0
0.383
0.707
0.924
1
0.924
0.707
0.383
D B
0
6
11
14
15
14
11
6
0
6
11
14
15
14
11
6
DIRECTION B
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
22.5
45
67.5
90
112.5
135
157.5
180
202.5
225
247.5
270
292.5
315
337.5
REPEAT
|
FORWARD
↓
↑
REVERSE
|
BRAKE A = BRAKE B = 0
FIGURE 13. Winding Currents and Lookup Table for Quarter Step Drive with Torque Compensation
15
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMD18245T | 制造商:Texas Instruments 功能描述:HALF BRIDGE 3A 55V 18245 TO22015 |
| LMD18245T/HALF | 制造商:Texas Instruments 功能描述:HALF BRIDGE 3A 55V 18245 TO22015 |
| LMD18245T/LF15 | 功能描述:馬達/運動/點火控制器和驅動器 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 |
| LMD18245T/NOPB | 功能描述:馬達/運動/點火控制器和驅動器 H-Bridge Motor Driver W/ Pwm 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 |
| LMD18245T/NOPB | 制造商:Texas Instruments 功能描述:Motor Driver IC |
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