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参数资料
| 型号： | LB11891V |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1 A, PDSO24 |
| 封装： | 0.275 INCH, SSOP-24 |
| 文件页数： | 8/9页 |
| 文件大小： | 145K |
| 代理商： | LB11891V |
LB11891V
No.7113-8/9
Overlap Creation and Calculations
Overlap Creation
For the voltages generated in the control block, if the midpoint is taken as the reference, one side will be
.
VX
VS
2
1
O.L.
2
×
Therefore, the waveform crossover will be
×
VX
VS
2
1
O.L.
from the midpoint.
Since that waveform is clamped at
VX
VS
2
1
referenced to the midpoint,
the overlap will be :
.
[%]
100
.
L
.
O
100
B
A
×
=
×
Overlap Calculation
(1) High side overlap
The calculated midpoint is
2
VXL
VXH
VS
VXL
2
)
VXL
VXH
VS
(
VN
=
+
=
Since A =
α – VN and B = VS – VXH – VN, the high side overlap can be calculated as follows.
Overlap =
.
[%]
100
)
VXL
VXH
VS
(
)
VXL
)
VXH
VS
((
V
2
100
)
2
/
)
VXL
VXH
VS
((
VXH
VS
)
2
/
)
VXL
VXH
VS
((
V
B
A
×
=
×
+
+
=
α
(2) Low side overlap
Since C = V
Ν – Vβ and D = VN – VXL, the low side overlap can be calculated as follows.
Overlap =
.
[%]
100
VXL
)
VXH
VS
(
V
2
)
VXL
)
VXH
VS
(
100
VXL
)
2
/
)
VXL
VXH
VS
((
V
)
2
/
)
VXL
VXH
VS
((
D
C
×
+
=
×
+
+
=
β
Absolute voltage
Calculated midpoint
High side residual voltage VXH
High side clamp potential
Low side clamp potential
Time
Low side residual voltage VXL
Electrical
angle
VS
VS-VXH
VN
V
β
VXL
0
V
α
B
A
D
VS
VS-VX
O.L
× (
– VXH)
VS
2
– VXH
VS
2
180
°
C
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB11899J-MPB-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB11899J-TRM-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB-1190 | 制造商:Ideal Industries Inc 功能描述: |
| LB11920 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for Office Equipment Applications |
| LB11920_08 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:For OA Products Three-Phase Brushless Motor Driver |
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