DATA SHEET
Figure 15 - Load transient V 1 , 5 to 40 A (500 μ s/div)
CH2 : V 1 (200 mV/div) CH4 : I 1 (20 A/div)
Figure 17 - Load transient V 1 , 30 to 65 A (500 μs/div)
CH2 : V 1 (200mV/div) CH4 : I 1 (20A/div)
Figure 16 - Load transient V 1 , 40 to 5 A (500 μ s/div)
CH2 : V 1 (200 mV/div) CH4 : I 1 (20 A/div)
Figure 18 - Load transient V 1 , 65 to 30A (500 μ s/div)
CH2 : V 1 (200mV/div) CH4 : I 1 (20A/div)
6
PROTECTION
PARAMETER
DESCRIPTION / CONDITION
MIN
NOM
MAX
UNIT
F
V 1 OV
t OV V1
V SB OV
t OV VSB
Input Fuses (L+N)
OV Threshold V 1
OV Latch Off Time V 1
OV Threshold V SB
OV Latch Off Time V SB
Not user accessible, quick-acting (F)
13.3
115
16
14.5
1
125
1
A
VDC
ms
% V SB
ms
I V1 lim
I V1 SC
t V1 SC
t V1 SC off
T SD
Current limit V 1
PFE850-12-054NA
Current limit V 1
PFE850-12-054RA
Max Short Circuit Current V 1
Short Circuit Regulation Time
Short Circuit Latch Off Time
Over Temperature On Heat
Sinks
T a < 45 °C
V i > 145 VAC, T a < 45 °C
V i > 90 VAC, T a < 45 °C
V 1 < 3V
V 1 < 3V, time until I V1 is limited to < I V1 sc
Time to latch off when in short circuit
Automatic shut-down
74
72
67
115
78
78
73
8
2
200
A
A
ms
ms
°C
6.1
OVERVOLTAGE PROTECTION
The PFE front-ends provide 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 discon-
necting the supply from the AC mains or by toggling the PSON_L input.
BCD.00040_AG Sep-11-2013
7
www.power-one.com
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