Data Sheet
March 27, 2008
QBK025A0B DC-DC Power Modules:
36-55Vdc Input; 12Vdc Output Voltage; 25A Output Current
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN,nom
, I
O
=15A, 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
(V
IN
=V
IN, nom
and I
O
= I
O, min
to I
O, max
,
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
Output Current
Output Current Limit Inception (Hiccup Mode)
(V
o
= 90% V
o, set
)
Efficiency
V
IN
= 48V, T
A
=25°C, I
O
= I
O, max
Switching Frequency
Dynamic Load Response
(dI
O
/dt=0.1A/μs; V
IN
=V
IN
,
nom
; T
A
=25°C)
Load change from I
O
= 50% to 75% of I
O, max
Peak Deviation
Settling Time (V
O
<10% peak deviation)
Load change from I
O
= 50% to 25% of I
O, max
,
Peak Deviation
Settling Time (V
O
<10% peak deviation)
12V
V
pk
t
s
⎯
⎯
2
200
⎯
⎯
% V
O
μs
12V
V
pk
t
s
⎯
⎯
2
200
⎯
⎯
% V
O
μs
All
All
All
12V
12V
12V
C
O, max
I
o
I
O, lim
η
f
sw
⎯
⎯
⎯
0
⎯
__
⎯
28.5
94
300
70
200
⎯
⎯
⎯
10,000
25
⎯
⎯
mV
rms
mV
pk-pk
μF
Adc
Adc
%
KHz
All
All
All
V
O
11.4
⎯
12.6
V
dc
Device
12
Symbol
V
O, set
Min
Typ
12
Max
Unit
V
dc
⎯
⎯
⎯
0.2
3
150
⎯
⎯
⎯
%V
o
%V
o
mV
⎯
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Symbol
C
iso
R
iso
Min
⎯
10
Typ
2000
⎯
Max
⎯
⎯
Unit
pF
MΩ
General Specifications
Parameter
Calculated MTBF (I
O
=80% of I
O, max
, T
A
=25°C,
airflow=1m/s(200LFM))
Weight
⎯
Min
Typ
2,600,000
44 (1.55)
Max
Unit
Hours
g (oz.)
LINEAGE
POWER
3
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
