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參數資料
| 型號： | PC33887VWR2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO20 |
| 封裝： | LEAD FREE, PLASTIC, HSOP-20 |
| 文件頁數： | 5/32頁 |
| 文件大?。?/td> | 859K |
| 代理商： | PC33887VWR2 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33887
TIMING DIAGRAMS
Figure 10. Operating States
Figure 11. Example Short Circuit Detection Detail on Low-Side MOSFET
Active
Current
Limiting
>8A
6.5
Short Circuit Detection Threshold
Typical Current Limit Threshold
Hard Short Detection and Latch-OFF
0
IN1 or IN2
IN2 or IN1
IN1 or IN2
IN2 or IN1
IN1 IN2
[1]
[0]
[1]
[0]
[1]
[0]
[1]
[0]
Outputs
Tri-Stated
Outputs
Tri-Stated
Outputs Operation
(per Input Control Condition)
Time
SF
,LO
GIC
OU
T
D
2,
LOGIC
IN
D
1,
LOGIC
IN
n,
LOGIC
I
N
I LOAD
,
OUT
P
UT
C
URRENT
(A)
High Current Load Being Regulated via Constant-OFF-Time PWM
Moderate Current Load
on Low-Side
MOSFET
Overcurrent Minimum Threshold
ta
tb
8.0
TIME
I L
O
A
D
,O
U
T
P
U
T
C
U
R
E
N
T
(A
)
Typical PWM Load
Current Limiting
Waveform
Hard Output
Short Latch-OFF
ta = Tristate Output OFF Time
tb = Current Limit Blank Time
6.5
Hard Short Detection
Short Circuit Detect Threshold
ta = Output Constant-OFF Time
tb = Output Blanking Time
ISCL Short Circuit Detection Threshold
I OUT
,
C
URRENT
(A)
Typical Current
Limiting Waveform
tb
5.0
ta
8.0
Hard short occurs.
Hard short is detected during tb
ILIM Blanking Time
ton
0.0
and output is latched-off.
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