QBS DC/DC Series Data Sheet
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.
Features
• “Quarter-Brick”
• High Power Density Up
To 120W
• Open-Frame Packaging
• 100°C Baseplate Operation
• Water Washable
• Outputs From
2.5V to 15V
• 1500V Isolation
• Positive or Negative
Enable Logic
Technical Specifications
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Input Reverse Voltage Protection
18 - 36 VDC
36 - 75 VDC
Shunt Diode
Output
Setpoint Accuracy
Line Regulation V
in
Min. - V
in
Max., I
out
Rated
Load Regulation I
out
Min. - I
out
Max., V
in
Nom.
Remote Sense Headroom
Minimum Output Current
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
Voltage Trim Range
Short Circuit And Overcurrent Protection
Current Limit Threshold Range, % of I
out
Rated
Short Circuit Current Limit
OVP Trip Range
UVP Trip Range
OVP/UVP Type
±1%
0.2% V
out
0.5% V
out
0.5 VDC
10 % l
out
Rated
25% I
out
4% V
out
500
m
s
±10%
Shutdown
110 - 140%
200% I
out
115 - 140% V
out
Nom.
70 - 90% V
out
Nom.
Latching
Efficiency vs. Load (48V Input)
90
85
EFFICIENCY %
80
QBS100ZG-ANT
75
EFF. (36v)
70
65
60
10
20
30
40
50
LOAD%
EFF. (48v)
EFF. (75v)
60
70
80
90
100
General
Turn-On Time
Remote Shutdown
Remote Shutdown Reference
Switching Frequency
Isolation
Input - Output
Input - Case
Output - Case
Temperature Coefficient
Case Temperature
Operating Range
Storage Range
Thermal Shutdown Range
Vibration, 3 Axes, 5 Min Each
MTBF
†
(Bellcore TR-NWT-000332)
Safety
Weight (Approx.)
30 ms
Positive or Negative Logic
V
in
Negative
400 kHz
1500 VDC
1050 VDC
1050 VDC
0.02 ppm/°C
-40°C To
+
100°C
-40°C To
+
125°C
105°C To 115°C
5 g, 10 - 55 Hz
2.5 X 106 hrs
UL, cUL, TUV
1.7 oz
Notes
† MTBF predictions may vary slightly from model to model.
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.
REV. JUL 11, 2003
Page 1 of 3
QBS DC/DC Series Data Sheet
Model Selection
Vin
(Volts)
24
24
24
24
24
48
48
48
48
48
48
48
48
48
Vin Range
(Volts)
18 - 36
18 - 36
18 - 36
18 - 36
18 - 36
36 - 75
36 - 75
36 - 75
36 - 75
36 - 75
36 - 75
36 - 75
36 - 75
36 - 75
Iin Max.*
(Amps)
2.90
3.50
5.20
6.80
6.80
1.40
1.70
2.50
3.30
4.00
3.30
2.50
3.45
4.00
Vout
(Volts)
2.5
3.3
5
12
15
2.5
3.3
5
12
12
15
3.3
5.0
15
Iout Rated
(Amps)
15.00
15.00
15.00
8.33
6.67
15.00
15.00
15.00
8.33
10.00
6.67
20.0
20.0
8.0
Ripple & Noise
Pk-Pk (mV)
100
100
100
150
150
100
100
100
150
150
150
100
100
150
Efficiency
Typ. **
76%
80%
84%
85%
85%
75%
78%
83%
86%
84%
86%
80%
82%
84%
Model
QBS038YD-A
†
QBS050YE-A
†
QBS075YG-A
†
QBS100YH-A
†
QBS100YJ-A
†
QBS038ZD-A
QBS050ZE-A
QBS075ZG-A
QBS100ZH-A
†
QBS120ZH-A
†
QBS100ZJ-A
†
QBS066ZE-A
QBS100ZG-A
QBS120ZJ-A
† Denotes advanced product release. Consult factory for product availability.
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
Mechanical Drawing
2.28"
(57.9mm)
MOUNTING INSERTS
M3X0.5 THROUGH 4PL
0.815"(20.7mm)
0.600"(15.2mm)
0.450"(11.4mm)
0.300"(7.6mm)
0.150"(3.8mm)
0
-0.215"(-5.5mm)
-0.425"(-10.8mm)
2.000"
(50.8mm)
1
2
3
-0.14" 0
(-3.6mm) 0.070"
(1.8mm)
Thermal Impedance
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
10.1 °C/W
8.0 °C/W
5.4 °C/W
4.4 °C/W
3.4 °C/W
Pin
1
2
3
4
5
6
7
8
1.930"
(49.0mm)
DIA 0.040"
(1.0mm)
6PL
0.18"
(4.6mm)
QBS
0.50"
(12.7mm)
Tolerances
Inches:
.XX ± 0.020
.XXX ± .010
Pin:
± 0.002
(Millimeters)
.X ± 0.5
.XX ± 0.25
1.45"
(36.8mm)
BOTTOM VIEW
4
5
6
7
8
DIA 0.062"
(1.6mm)
2PL
Function
-V
in
On/Off
+V
in
-V
out
-Sense
Trim
+Sense
+V
out
± 0.05
(Dimensions as listed unless otherwise specified.)
Note:
Thermal impedance data is dependent on
many environmental factors. The exact
thermal performance should be validated
for specific application.
REV. JUL 11, 2003
Page 2 of 3
OPTIONS
This page is offered as a reference. Consult factory for actual availability of options. When ordering
equipment options, use the following suffix information. Select preferred option(s) and add the suffix to the
model number. Ordering option examples are located below the options table.
OPTION
Negative Logic
Lucent-Compatible Trim
Trim
Enable
Trim and Enable
SUFFIX
N
T
1
2
3
APPLICABLE SERIES
HAS, HBD, HBS, HES, HLS, HLD, LES,
QBS, QES, QLS, TES, TQD
HAS, HBD, HBS, HES, HLS, QBS, QES,
QLS
IAS, LES
IAD, IAS, LES, SMS
IAS, LES
REMARKS
TTL "Low" Turns Module ON
TTL "High" Turns Module OFF
Pin Length and Heatsink Options
0.110" (2.8mm) Pin Length
0.150" (3.8mm) Pin Length
0.24" (6.1mm) Horizontal Heatsink
0.24" (6.1mm) Vertical Heatsink
0.45" (11.4mm) Horizontal Heatsink
0.45" (11.4mm) Vertical Heatsink
0.95" (24.1mm) Horizontal Heatsink
0.95" (24.1mm) Vertical Heatsink
8
9
1H
1V
2H
2V
3H
3V
All Leaded Models
All Leaded Models
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks
(Except HLS, HLD, QLS, TLD, and TKD Packages)
Standard Pin Length is 0.180" (4.6mm)
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Example Options:
HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent-compatible trim, and 0.95” vertical heatsink.
LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.
QBS066ZG-AT8 = QBS066ZG-A with Lucent-compatible trim and 0.110” pin length.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president
of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
REV. JUL 11, 2003
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