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參數(shù)資料
| 型號： | LMD18245T |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)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)： | 12/18頁 |
| 文件大?。?/td> | 647K |
| 代理商： | LMD18245T |
The Typical Application
(Continued)
HALF STEP DRIVE WITHOUT TORQUE
COMPENSATION
To make the motor take half steps, windings A and B can be
energized in the sequence
A
→
AB
→
B
→
A
*
B
→
A
*
→
A
*
B
*
→
B
*
→
AB
*
→
A
→
…
The motor takes one half step each time the number of en-
ergized windings changes. It is important to note that al-
though half stepping doubles the step resolution, changing
the number of energized windings from two to one de-
creases (one to two increases) torque by about 40%, result-
ing in significant torque ripple and possibly noisy operation.
Figure 10 shows the winding currents and digital control sig-
nals for this half step application of the typical application
circuit.
DS011878-19
Top Trace: Phase A Winding Current at 1A/div
Bottom Trace: Phase B Winding Current at 1A/div
Horizontal: 1 ms/div
*500 steps/second
DS011878-20
M4 A through M1 A = M4 B through M1 B = 1
BRAKE A = BRAKE B = 0
FIGURE 8. Winding Currents and Digital Control Signals for Two-Phase-On Drive
DS011878-21
Top Trace: Phase A Winding Current at 1A/div
Bottom Trace: Phase A Sense Voltage at 5V/div
Horizontal: 1 ms/div
*500 steps/second
FIGURE 9. Winding Current and Voltage at the Output of the Associated Current Sense Amplifier
www.national.com
12
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相關(guān)代理商/技術(shù)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(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LMD18245T/NOPB | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)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(fēng)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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