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參數(shù)資料
| 型號： | LB1987 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| 中文描述： | 三相無刷電機錄像機絞盤馬達驅(qū)動器 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 148K |
| 代理商： | LB1987 |
Pin
Function
Equivalent circuit diagram
Control and Current Limiting Functions
No. 6109-4/17
LB1987, 1987D, 1987M, 1987H
VLIM = 5 V
I
VCTL
2.35 V typ 3.15 V typ
0
1
2
3
4
5
I
VLIM
0
1
2
3
4
5
Control characteristics
Current limiting characteristics
Slope = 0.50 A/V typ
V
CTLREF: open
Gm2 = 1.50 A/V typ
Gm1 = 0.65 A/V typ
200 mV typ
(+) inputs
(–) inputs
Lower side oversaturation
prevention circuit input
block
OUT for
each phase
V
CTLREF: open
Pin Functions
U phase Hall element input.
Logic H refers to the state where IN
+
> IN
–
U
IN
+
U
IN
–
A12207
200
100
μ
A
200
A12208
150
μ
A
VCC
Vs
3
Rf(POWER)
Rf(SENSE)
200 k
200
10
μ
A
VCC
V phase Hall element input.
Logic H refers to the state where IN
+
> IN
–
V
IN
+
V
IN
–
W phase Hall element input.
Logic H refers to the state where IN
+
> IN
–
W
IN
+
W
IN
–
U phase output.
V phase output.
W phase output.
(These pins include internal spark killer diodes.)
U
OUT
V
OUT
W
OUT
A12209
200
200
μ
A
max
VCC
LIM
100
μ
A
200
200
CTL
VCC
VCC
5
5
CTLREF
Speed control.
This circuit implements constant current drive based on current feedback
from the Rf pin.
Gm = 0.58 A/V typ at Rf = 0.5
CTL
Current limiter function control.
The output current can be modified linearly by the voltage on this pin.
Slope = 0.5 A/V typ at Rf = 0.5
LIM
CTLREF
(LB1987/D)
Output block power supply.
V
S
Rf(POWER)
Rf(SENSE)
Output current detection.
Current feedback is applied to the control block by inserting the resistor Rf
between these pins and ground. Also, both the lower side saturation
prevention circuit and the torque ripple correction circuit operate according to
the voltage on this pin. In particular, since this voltage sets the
oversaturation prevention level, the lower side oversaturation prevention
operation can be degraded if the value of this resistor is set too low.
Note that the PWR pin and the SENSE pin must be connected together.
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LB1987D | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987H | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987M | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1988N | Three-Phase Sensorless Motor Driver + Loading Motor Driver |
| LB1989 | Three-Phase Sensorless VCR Drum Motor Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB-1987 | 制造商:Ideal Industries Inc 功能描述:Ideal |
| LB1987D | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987H | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1988N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Three-Phase Sensorless Motor Driver + Loading Motor Driver |
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