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參數(shù)資料
| 型號： | LS7561-TS |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 86K |
| 代理商： | LS7561-TS |
11
14
10
17
15
12
V
M
OUT1
OUT3
OUT4
OUT6
V
R
FIGURE 7. FOUR PHASE HALFWAVE MOTOR CONTROLLER
19
2
20
23
ENABLE
TOP DRIVER
POLARITY
SELECT
BRAKE
(+)
(-)
OVERCURRENT
SENSE
22
23
5
7
6
8
BRAKE
SELECT
BRAKE
TACH OUT
OUT
V
R
V
R
(-)
(+)
ERROR
AMP
1M
100K
SPEED
CONTROL
PWM RATE
CONTROL
FIGURE 8. PWM BRAKING
0.1μF
V
R
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
BRAKE
TYPICAL
VALUES
*
*
*
*
R2
R1
C1
FIGURE 7.
This four phase half wave motor controller uses the same BRAKE circuit as in Figure 4 and switches
the Top Driver Select from a high to a low as in Figure 6.
FIGURE 8.
Using an analog switch (such as the CD4066) PWM braking can be employed when the brake is
applied. At that time, the error amplifier is configured as a voltage follower and its input is switched from the
speed adjustment control to the PWM rate control. By adjusting the PWM rate control, the average motor
current during braking can be controlled.
7560-040198-7
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