參數(shù)資料
型號: NCP1381
廠商: ON SEMICONDUCTOR
英文描述: Low−Standby High Performance PWM Controller
文件頁數(shù): 23/26頁
文件大?。?/td> 559K
代理商: NCP1381
NCP1381
http://onsemi.com
23
Figure 35.
The B
OK
comes back in the upslope but the logic 2 waits until UVOL circuitry detects 15 V to restart the Control-
ler.
41.3m
41.8m
42.4m
42.9m
43.5m
5.0
5.0
15
25
35
41.3m
41.8m
42.4m
42.9m
43.5m
1.5
500m
2.5
4.5
6.5
41.3m
41.8m
42.4m
TIME (s)
42.9m
43.5m
2.0
2.0
6.0
10
14
V
i
Plot3
B
O
V
O
Plot2
Plot1
V
CC
P
ON
Reset
B
OK
P
In shortcircuit, the V
CC
drops to VCC
latch
and goes up to 15 V. The blue trace corresponds to the “ok to pulse” signal whose duration is
given by the fault timer (purposely reduced on this simulation). Should a VCC
OFF
condition be detected, or a B
OK
fault, the duration would
be accordingly truncated.
Figure 36.
20.0m
60.0m
100m
TIME (s)
140m
180m
2.00
6.00
10.0
14.0
18.0
500m
2.50
4.50
6.50
8.50
V
i
V
CC
V
O
V
OK
15 V
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