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參數(shù)資料
| 型號： | LB11981 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Three-Phase Sensorless Motor Driver |
| 中文描述： | 三相電機驅(qū)動器傳感器 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 46K |
| 代理商： | LB11981 |
No. 6656-3/7
LB11981
Pin Functions
Pin No.
Pin
Function
1
VCOIN
VCO circuit voltage input. Inputs the PCOUT pin voltage filtered by an RC circuit.
2
CX
The value of the capacitor between this pin and ground determines the operating frequency range and the minimum operating
frequency of the VCO circuit.
3
LKC
Connection for the lock detection circuit capacitor. The value of the capacitor between this pin and ground determines the lock
state monitoring period. The lock detection circuit can be disabled by connecting this pin to ground.
4
LAT
Lock detection circuit mode switching input
5
INFR
Forward/reverse switching input
6
LKO
Lock state detection signal. (A pull-up resistor is required.)
7
GND
Ground
8
BFGO
Motor back electromotive force detection FG output (3 phases combined). (A pull-up resistor is required.)
9
R
FS
Current limit sensing. The output current can be detected and current limiting applied by connecting this pin to the RF pin.
10
R
F
Lowest potential of the motor driver output transistor. The value of the resistor between this pin and ground determines the
current that flows in the output transistor.
11, 12, 14
N.C
Not connected
13
U
OUT
V
OUT
W
OUT
N.C
15
Motor driver output
16
17
Not connected
18
MCOM
Motor coil midpoint input. The coil voltage waveform is detected using this voltage as the reference level.
19
FC
Frequency characteristics correction. Closed loop oscillation in the current control system can be stopped by inserting a
capacitor between this pin and ground.
20
V
CCM
U
IN
V
IN
W
IN
V
CC
V
REG
TEST
Motor drive output stage power supply
21
Coil waveform detection comparator input
These are connected to the outputs for each phase through internal 10 k
resistors.
22
23
24
Power supply
25
Internal 5 V regulator output
26, 27
Test pin. This pin must be left open during normal operation.
28
PC
OUT
V
CO
circuit PLL output
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