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参数资料
| 型号： | LB1998 |
| 元件分类： | 运动控制电子 |
| 英文描述： | DISK DRIVE MOTOR CONTROLLER, 1.3 A, PDSO28 |
| 封装： | 0.375 INCH, HSOP-28 |
| 文件页数： | 4/7页 |
| 文件大小： | 120K |
| 代理商： | LB1998 |
LB1998
No.5979-4/7
Truth Table
Brake Mode Switching Truth Table
Hall input
Source
→ Sink
U
V
H
Control
VCIN
Phase W
→ Phase V
H
1
Phase V
→ Phase W
H
L
Phase W
→ Phase U
H
2
Phase U
→ Phase W
H
L
Phase V
→ Phase W
H
3
Phase W
→ Phase V
L
H
L
Phase U
→ Phase V
H
4
Phase V
→ Phase U
L
H
L
Phase V
→ Phase U
H
5
Phase U
→ Phase V
H
L
H
L
Phase U
→ Phase W
H
6
Phase W
→ Phase U
L
H
L
Input:
H: Input 1 is higher in potential than input 2 by at least 0.2V.
L: Input 1 is lower in potential than input 2 by at least 0.2V.
Block Diagram
BRAKE pin
VCIN > VCREF
VCIN < VCREF
L, OPEN
Forward
Reverse brake
H
Forward
Short brake
U
IN
1
V
CC
1
V
CC
2
RF
U
OUT
U
IN
2
V
IN
1
V
IN
2
W
IN
1
W
IN
2
V
H
FG
V
OUT
W
OUT
PWR
GND
BRAKE
V
CREF
V
CIN
R
OUT
1
R
IN
1
RS
FC
S/S
FRAME
GND
FG
SEL
R
OUT
2
R
IN
2
R
OUT
3
R
IN
3
Matrix
Waveform distributor
Current
limiter
Rotation direction
detector
Thermal
shutdown
Reference
voltage
1
Hall
FG/
3
Hall
FG/
Hall
power
supply
Gain
switching
amplifier
Short
brake/
reverse
brake
switching
Forword/
reverse
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