rev.
page
date
1 of 3
08/2007
PART NUMBER:
VQB125 series
DESCRIPTION:
DC/DC converter
features
·
40-125 W isolated output
·efficiency to 92%
·fixed switching frequency
·monotonic start-up into pre-
biased load
·input under-voltage protection
·over-temperature protection
·over current protection
·remote ON/OFF
·industry standard quarter-brick
package
·fully isolated 2250 VDC
model
number
VQB125-D48-S1
VQB125-D48-S1R2
VQB125-D48-S1R5
VQB125-D48-S1R8
VQB125-D48-S2R5
VQB125-D48-S3R3
VQB125-D48-S5
VQB125-D48-S9
VQB125-D48-S12
input
voltage
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
output
voltage
1.0 VDC
1.2 VDC
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5 VDC
9 VDC
12 VDC
output
current
40 A
40 A
40 A
40 A
40 A
35 A
25 A
13 A
10 A
no load
60 mA
60 mA
60 mA
60 mA
60 mA
60 mA
60 mA
60 mA
60 mA
input current
full load
1004 mA
1176 mA
1436 mA
1705 mA
2341 mA
2704 mA
2894 mA
2679 mA
2717 mA
efficiency
83%
85%
87%
88%
89%
89%
90%
91%
92%
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
rev.
page
date
2 of 3
08/2007
PART NUMBER:
VQB125 series
DESCRIPTION:
DC/DC converter
INPUT
input voltage range
under voltage lockout
input filter
logic compatibility
module ON
module OFF
48V:
48 Vin power up
48 Vin power down
CMOS or open collector TTL
open circuit or logic high
<12 VDC
36-75V
35 V
33 V
LC type
OUTPUT
voltage accuracy
transient response:
ripple & noise
temperature coefficient
line regulation
1
load regulation
2
over-voltage protection
output current limit
short circuit protection
external trim adj.
25% step load change
20MHz BW
single/dual
single/dual
% nom. output
continuous/hiccup
±1.0% max.
<500 µS
100 mV p-p max.
±0.03%/°C max.
±0.2% max.
±0.5% max.
115-140%
110-140%
±10%
GENERAL SPECIFICATIONS
efficiency
isolation voltage
isolation resistance
switching frequency
over temperature protection
operating temp. range
storage temp.
dimensions
weight
2.3x1.45x0.36 inches
(58.4x36.8x9.2mm)
50 g
NOTES:
1. measured from high line to low line
2. measured from full load to 1/4 load
3. suffix “N” to the model number with negative logic remote ON/OFF
module ON
<1.2 VDC
module OFF
open circuit or logic high
4. output ripple and noise is measured with 10 µF tantalum and 1 µF ceramic capacitor across output.
see table
2250VDC min.
10
7
Ohm min.
250KHz, typ.
120°C typ.
-40°C to 85°C
-40°C to 125°C
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
Power technology
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