Data Sheet
March 27, 2008
Electrical Specifications
(continued)
QRW025 Series Power Modules; dc-dc Converters
36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A
Output Specifications for the QRW025AOM (Vo = 1.5Vdc)
Parameter
Output Voltage Set Point
(VI = 48 Vdc; IO = IO, min to IO, max, TA = 25 °C)
Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions at steady state until end of life.)
Output Regulation:
Line (VI = VI, min to VI, max)
Load (IO = IO, min to IO, max)
Temperature (TA = TA, min to TA, max)
Output Ripple and Noise
RMS (5 Hz to 20 MHz bandwidth)
Peak-to-peak (5 Hz to 20 MHz bandwidth)
External Load Capacitance
Output Current
(Vo =90% of VO, nom.)
Output Current-limit Inception
(VO = 90% of VO, set)
Output Short-circuit Current (Average)VO = 0.25 V
Efficiency
(VI = VIN, nom; IO = IO, max), TA = 25 °C
Switching Frequency
Dynamic Response
(DIO/Dt = 1 A/10 µs, VI = 48 V, TA = 25 °C); tested
with a 220 µF aluminium and a 1.0 µf ceramic
capacitor across the load.):
Load Change from
IO = 50% to 75% of IO, max:
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
Load Change from IO = 50% to 25%
of IO, max :
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
All
M
M
Latched off
η
fSW
—
—
87
300
—
—
%
kHz
IO
IO, lim
0.0
—
Device
M
M
Symbol
Vo
Vo
Min
1.47
1.45
Typ
1.5
—
Max
1.52
1.55
Unit
Vdc
Vdc
M
—
—
—
—
—
—
—
—
0.05
0.05
15
—
—
—
—
30
0.2
0.2
50
20
100
25,000
25
—
%, VO, set
%, VO, set
mV
mVrms
mVp-p
µF
Adc
Adc
M
6
200
mV
µs
6
200
mV
µs
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Symbol
Ciso
Riso
Min
—
10
Typ
5600
—
Max
—
—
Unit
PF
MW
General Specifications
Parameter
Calculated MTBF (IO = 80% of IO, max TA = 40 °C)
Weight
—
Min
Typ
1,715,000
37(1.31)
—
Max
Unit
Hours
g (oz.)
Lineage Power
6
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
