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參數(shù)資料
| 型號： | UA9406 |
| 廠商： | 友順科技股份有限公司 |
| 英文描述： | LINEAR INTEGRATED CIRCUIT (2-PHASE HALF-WAVE MOTOR PREDRIVER) |
| 中文描述： | 線性集成電路（2三相半波電機預(yù)驅(qū)動器） |
| 文件頁數(shù)： | 3/5頁 |
| 文件大小： | 94K |
| 代理商： | UA9406 |
UTC UA9406
LOCK DETECTION
The automatic restart circuit detects a motor lock condition and automatically turns off the output current. When
the lock condition is cleared, the IC automatically restarts and allow the motor to run.
In the UTC UA9406, automatic restart is performed in the following manner. A motor lock condition is detected
when the Hall signal stops switching. The output is ON when pin 6 is being charged, and OFF when pin 6 is being
discharged. Pin 3 is ON during normal operation, and OFF when the motor is locked. Pin 3 is an open collector
output.
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R109-014,A
Hall input
Motor output
6 pin
3pin L
Motor
locked
Motor lock detected
High
t
ON
*
t
OFF
**
Pin6
comparator
voltage
Motor lock
cleared
Reverts to normal operation
Fig.1
OFF
Pin6
clamp
voltage
ON
Output ON time (t
ON
) and OFF time (t
OFF
) determined by the pin6 capacitor where
t
ON
=C (V
6CL
-V
6CP
)
I
6C
t
OFF
=C (V
6CL
-V
6CP
)
I
6d
C is the capacitance of the pin-6 external capacitor
V
6CL
is the pin6 clamp voltage
V
6CP
is the pin6 comparator voltage
I
6C
is the pin6 charge current
I
6d
is the pin6 discharge current
OPERATION NOTES
(1) The lock detection output pin (pin 3) may maintain
HIGH level for a few hundred milliseconds when the power is turned on.
(sec)
(sec)
Power
3 pin
A few hundred millseconds
Fig.2
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