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參數資料
| 型號： | LV8130V |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.05 A, PDSO30 |
| 封裝： | SSOP-30 |
| 文件頁數： | 4/19頁 |
| 文件大?。?/td> | 520K |
| 代理商： | LV8130V |
LV8130V
Description of LV8130V
1. Output Drive Circuit
The LV8130V adopts quiet PWM drive to realize low power consumption and low noise.
This drive method is a direct PWM drive to reduce power loss in the output. In addition, the current-carrying angle is
150 degrees to reduce noise, and soft-switching is performed by changing the duty and imparting a slope to the current
when switching the phases. Furthermore, when the IC is controlled with the EI+ pin voltage, current feedback is
performed to keep the coil current constant, allowing it to implement a system with reduced noise and vibration.
Waveform Example (1)
LV8130V (150
°)
Conventional model (120
°)
2ms
5.0V
1
2ms
10.0V
3
2ms
10.0mA
4
2ms
5.0V
1
2ms
10.0V
3
2ms
10.0mA
4
(2) flat
(1) smoothly
(1) Current slope when switching the phases by quiet PWM drive
(2) Reduction of current fluctuation by current feedback
Waveform Example (2)
Hi-speed
Low-speed
current feed
10ms
5.0V
1
10ms
10.0V
3
10ms
10.0mA
4
10ms
5.0V
1
10ms
10.0V
3
10ms
10.0mA
4
back
Voltage
Current
The right figure shows the relationship between the control
voltage and the RF voltage for current feedback. Current is
flowed to the coil until the RF voltage determined by the control
voltage is reached, and when the RF voltage reaches the target
voltage, the PWM is turned off to maintain a constant current.
This relationship shown in the right figure enables adjustment of
the coil current by the RF resistor. Labeling the RF resistor as
R0 (
Ω), the coil current relative to the control voltage is as
follows.
0.25V
1.28V typ
VTOC
VRF
Gain = 0.145 times
012
3
4
Control characteristics
[Control function]
IO = (ΔVIN × 0.145) / R0
No.A1708-12/19
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