Data Sheet
October 11, 2011
ESTW025A0F Series Eighth-Brick Power Modules
36–75Vdc Input; 3.3Vdc Output; 25A Output
Electrical Specifications
(continued)
Parameter
Nominal Output Voltage Set-point
V
IN
=V
IN, nom
, I
O
=I
O, max
, T
A
=25°C)
Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions until end of life)
Output Regulation
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Output Ripple and Noise on nominal output
(Co=1uF,ceramic+10uF,tantalum, V
IN
=V
IN, nom
,I
O
= I
O,
max
, T
A
=T
A, min
to T
A, max
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
1
Device
All
All
Symbol
V
O, set
V
O
Min
3.250
3.200
Typ
3.300
±0.2
Max
3.350
3.400
Unit
V
dc
V
dc
All
All
All
±0.1
10
% V
O, set
mV
% V
O, set
All
All
All
All
All
All
C
O, max
I
o
0
0
26.3
8
40
29
1.6
20
75
20,000
25.0
32.5
mV
rms
mV
pk-pk
μF
A
dc
A
dc
A
rms
Output Current
Output Current Limit Inception (Hiccup Mode )
(V
O
= 90% of V
O, set
)
Output Short-Circuit Current (V
O
≤250mV)
( Hiccup Mode)
Efficiency
V
IN
= V
IN, nom
, T
A
=25°C, I
O
=I
O, max ,
V
O
= V
O,set
V
IN
= V
IN, nom
, T
A
=25°C, I
O
=10A
,
V
O
= V
O,set
V
IN
= V
IN, nom
, T
A
=25°C, I
O
=5A
,
V
O
= V
O,set
Switching Frequency
Dynamic Load Response
(Co=1uF,ceramic+220uF,tantalum, dI
o
/dt=0.1A/s;
V
IN
= 48V; T
A
=25°C)
Load Change from Io= 50% to 75% or 25% to 50% of
I
o,max
Peak Deviation
Settling Time (Vo<10% peak deviation)
I
O, lim
I
O, s/c
All
All
All
All
η
η
η
f
sw
91.0
91.0
85.5
92.0
92.0
87.0
355
%
%
%
kHz
All
All
V
pk
t
s
127
200
mV
s
1.
See Note 2 under Feature Specifications.
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
I/O Isolation Voltage (100% factory Hi-pot tested)
Device
All
All
All
Symbol
C
iso
R
iso
All
Min
Typ
1000
30
Max
2250
Unit
pF
MΩ
V
dc
General Specifications
Parameter
Calculated Reliability based upon Telcordia SR-332
Issue 2: Method
I
Case 3 (I
O
=80%I
O, max
, T
A
=40°C,
airflow = 200 lfm, 90% confidence)
Weight (Open Frame)
Weight (with Heatplate)
Device
All
All
All
All
Symbol
FIT
MTBF
Min
Typ
229.4
4,359,904
22 (0.78)
35 (1.23)
Max
Unit
10 /Hours
Hours
g(oz)
g(oz)
9
LINEAGE
POWER
3
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
