TECHNICAL SPECIFICATIONS
DESCRIPTION
QBS single output DC/DC converters provide up to
120 Watts of output power in an industry standard,
quarter-brick footprint. The QBS converters feature
open-frame packaging, along with planar magnetics to
provide maximum useable power with minimal
thermal constraints. The QBS is especially suited to
telecom, networking, and industrial applications, and
is fully compatible with production board washing
processes.
Setpoint Accuracy
Line Regulation V
Load Regulation I
Remote Sense Headroom
Minimum Output Current
Dynamic Regulation, Loadstep
Voltage Trim Range
Short Circuit And Overcurrent Protection
Current Limit Threshold Range, % of I
Short Circuit Current Limit
OVP Trip Range
UVP Trip Range
OVP/UVP Type
Voltage Range
Input Reverse Voltage Protection
Turn-On Time
Remote Shutdown
Remote Shutdown Reference
Switching Frequency
Isolation
Temperature Coefficient
Case Temperature
Thermal Shutdown Range
Vibration, 3 Axes, 5 Min Each
MTBF
Safety
Weight (Approx.)
24 VDC Nominal
48 VDC Nominal
Pk Deviation
Settling Time
Input - Output
Input - Case
Output - Case
Operating Range
Storage Range
†
(Bellcore TR-NWT-000332)
in
out
Min. - V
Min. - I
in
out
Max., I
Max., V
out
General
Output
out
Input
in
Rated
Rated
Nom.
(888) IPD-CONVerters (888) 473-2668 www.ipdconverters.com
Positive or Negative Logic
115 - 140% V
70 - 90% V
QBS SERIES - 120 WATT
-40°C To
-40°C To
105°C To 115°C
10 % l
5 g, 10 - 55 Hz
UL, CUL, TUV
2.5 X 10
V
0.02 ppm/°C
18 - 36 VDC
36 - 75 VDC
Shunt Diode
110 - 140%
in
1500 VDC
1050 VDC
1050 VDC
Shutdown
0.2% V
0.5% V
200% I
Negative
out
0.5 VDC
400 kHz
out
out
Latching
25% I
4% V
+
+
500 s
30 ms
100°C
125°C
1.7 oz
Rated
±10%
Nom.
Nom.
6
±1%
hrs
out
out
out
out
out
1
• “Quarter-Brick”
• High Power Density Up
• Open-Frame Packaging
• 100°C Baseplate Operation
FEATURES
To 120W
†
Specifications typically at 25°C, normal line, and full load, unless otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model. Please consult factory
for specific model information.
Units are water-washable and fully compatible with commercial spray or immersion
post wave-solder washing equipment.
MTBF predictions may vary slightly from model to model.
90
85
80
75
70
65
60
10
20
Efficiency vs. Load (48V Input)
30
40
50
Notes
LOAD%
QBS100ZG-ANT
60
• Water Washable
• Outputs From
• 1500V Isolation
• Positive or Negative
EFF. (36v)
EFF. (48v)
EFF. (75v)
2.5V to 15V
Enable Logic
70
80
90
Rev. 04/2001
100