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ETA-USA - eph 28sc 380




ETA-USA Tel
: 408-365-7723 Fax: 408-365-7513 e-mail: dave@eta-usa.com

INPUT EPH-28SC380
MIN
TYP
MAX
CONDITIONS
Operating Input Voltage(V
i
)
360
V 380V 400V
Maximum Input Current(I
i
, max)
1.9A
V
i
=360V to 400V
I
o
=I
o
, max
Inrush Transient
1 A
2t
Input Ripple Rejection
60db
@120Hz
OUTPUT
EPH-28SC380
MIN
TYP
MAX
CONDITIONS
Output Voltage Set Point(V
o
,
set)
27.72V 28.00V 28.28V Tc=25
C, Vi=380V, I
o
=I
o
, max
Line Regulation
0.01%
0.2%
V
i
=360V to 400V
I
o
= I
o
, min to full load.
Load Regulation
0.05%
0.2%
I
o
=1A to full load
Temperature
Drift
0.02%/
C T
c
=-40 to 100
C
Output Ripple and Noise Voltage Peak to Peak
500mV
p-p
Bandwidth 5Hz to 20 MHz.
With output capacitor 440uF/35V
output capacitor
Output Current(I
o
) 1A
28.6A
At
I
o<
I
o
, min, the modules may
exceed output ripple specifications
Output
Current
Limit
105% 120% 130% V
o
=90% of V
o
, set
Output Short Circuit Current
170%
V
o
<=250mV, output hiccup would
occur with 5m
short impedance.
Switching
Frequency
480KHz
Efficiency
89%
92%
T
c
=25
C at full load, V
in
=380V
T
c
=90
C at full load, V
in
=380V
Dynamic Response Peak Deviation Settling
Time
3%
V
o
,set
300% V
o
,set
50%-100%load,0.5A/us;With
Cap.440uF/35V
T
c
=25
C, V
i
=380V

CONTROL EPH-28SC380
MIN
TYP
MAX
CONDITIONS
Turn-On
Time
3sec
I
o
=80% of I
o
, max V
o
with +/- 1%
V
o
,set
Turn-On
Voltage
330V
I
o
=80% of I
o
, max
Output Voltage Adjustment
Output Voltage Trim Range
75 %V
o
,set
103%
V
o
,set
With Cap. 440uF/35V Trim up to
103% of V
o, set
@ V
in
, min=360V.
Output Over Voltage Clamp
30V
35V
T
c
=-40 to 100
C
Over Temperature Shutdown
100
C 105
C 110
C Auto
Recovery
Over Temperature turn on
80
C
ISOLATION PARAMETER
MIN
TYP
MAX
CONDITIONS
Input to Case
2200V
dc
Output to Case
500V
dc
Input to Output Capacitance
4300pF
Isolation Resistance
10Mohm
800 Watt
DC-DC CONVERTER
EPH-28SC380
SERIES

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