ABC400-10XXG Data Sheet
Figure 13:
Load transient V
o
(500μs/div), 8.5A <-> 17A 2A/μs
CH1:
V
o
(200mV/div)
CH2:
I
o
(5.0 A/div)
Figure 14:
Load transient V
o
(1.0ms/div), 8.5A <-> 17A, 2A/μs
CH1:
V
o
(200 mV/div)
CH2:
I
o
(5 A/div)
7 PROTECTION
Parameter
Input fuses (L only)
F
Vo ov
OV threshold
Conditions / Description
Not user accessible, time lag characteristic
ABC400-1012G
ABC400-1024G
ABC400-1048G
ABC400-1012G
ABC400-1024G
ABC400-1048G
Min
14.0
28.0
53
31.5
20.0
8.9
Nom
8.0
Max
16.0
32.0
57
39.0
23.0
11.1
Unit
A
VDC
VDC
VDC
A
A
A
°C
I
o lim
T
SD
Current limit
Over temperature on heat
sinks
V
i
> 90 VAC, -10 °C
<T
a
< 50 °C
Automatic shut-down
33.0
21.0
10
100
7.1 OVERVOLTAGE PROTECTION
The AC-DC power supply provides a fixed threshold overvoltage (OV) protection implemented with a HW comparator. Once an
OV condition has been triggered, the supply will shut down and latch the fault condition. the latch can be unlocked by
disconnecting the supply from the AC mains only.
7.2 CURRENT LIMITATION
The main output current limitation will decrease with linear derating to 50% at 70 ºC if the ambient (inlet) temperature increases
beyond 50 °C (see
Figure 15
).
Rev. AA1, 19-May-2011
Page 8 / 13
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