Page 1 of 3
REV. JUL 11, 2003
QBS DC/DC Series Data Sheet
Turn-On Time 30 ms
Remote Shutdown Positive or Negative Logic
Remote Shutdown Reference VinNegative
Switching Frequency 400 kHz
Isolation
Input - Output 1500 VDC
Input - Case 1050 VDC
Output - Case 1050 VDC
Temperature Coefficient 0.02 ppm/°C
Case Temperature
Operating Range -40°C To +100°C
Storage Range -40°C To +125°C
Thermal Shutdown Range 105°C To 115°C
Vibration, 3 Axes, 5 Min Each 5 g, 10 - 55 Hz
MTBF†(Bellcore TR-NWT-000332) 2.5 X 106hrs
Safety UL, cUL, TUV
Weight (Approx.) 1.7 oz
Technical Specifications
Voltage Range
24 VDC Nominal 18 - 36 VDC
48 VDC Nominal 36 - 75 VDC
Input Reverse Voltage Protection Shunt Diode
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.
• “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
Input
Output
General
Description Features
Setpoint Accuracy ±1%
Line Regulation VinMin. - VinMax., IoutRated 0.2% Vout
Load Regulation IoutMin. - Iout Max., VinNom. 0.5% Vout
Remote Sense Headroom 0.5 VDC
Minimum Output Current 10 % loutRated
Dynamic Regulation, Loadstep 25% Iout
Pk Deviation 4% Vout
Settling Time 500 ms
Voltage Trim Range ±10%
Short Circuit And Overcurrent Protection Shutdown
Current Limit Threshold Range, % of IoutRated 110 - 140%
Short Circuit Current Limit 200% Iout
OVP Trip Range 115 - 140% V outNom.
UVP Trip Range 70 - 90% VoutNom.
OVP/UVP Type Latching
QBS100ZG-ANT
60
65
70
75
80
85
90
10 20 30 40 50 60 70 80 90 100
LOAD%
EFFICIENCY %
EFF. (36v)
EFF. (48v)
EFF. (75v)
Efficiency vs. Load (48V Input)
†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.
Notes
Page 2 of 3
REV. JUL 11, 2003
QBS DC/DC Series Data Sheet
Mechanical Drawing
Thermal Impedance
Natural Convection 10.1 °C/W
100 LFM 8.0 °C/W
200 LFM 5.4 °C/W
300 LFM 4.4 °C/W
400 LFM 3.4 °C/W
Tolerances
Note:
Thermal impedance data is dependent on
many environmental factors. The exact
thermal performance should be validated
for specific application.
1-V
in
2 On/Off
3+V
in
4-V
out
5 -Sense
6 Trim
7 +Sense
8+V
out
Inches:
.XX ± 0.020
.XXX ± .010
Pin:
± 0.002 ± 0.05
(Dimensions as listed unless otherwise specified.)
(Millimeters)
.X ± 0.5
.XX ± 0.25
Pin Function
!
"
#!$
"
"
Vin
(Volts) Vin Range
(Volts) Iin Max.*
(Amps) Vout
(Volts) Iout Rated
(Amps) Ri pp le & No is e
P k-Pk (m V) Efficiency
Typ. ** Model
24
24
24
24
24
48
48
48
48
48
48
48
48
48
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
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
2.5
3.3
5
12
15
2.5
3.3
5
12
12
15
3.3
5.0
15
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
100
100
100
150
150
100
100
100
150
150
150
100
100
150
76%
80%
84%
85%
85%
75%
78%
83%
86%
84%
86%
80%
82%
84%
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
† De no te s ad vanc ed product rele ase . Co nsult facto ry for pro duct availab ility.
* Maximum input curre nt at minimum inp ut voltage , maximum rated outp ut p owe r.
** At no minal Vin, rated outp ut.
Model Selection
Page 3 of 3
REV. JUL 11, 2003
OPTIONS
OPTION SUFFIX APPLICABLE SERIES REMARKS
Negative Logic N HAS, HBD, HBS, HES, HLS, HLD, LES, TTL "Low" Turns Module ON
QBS, QES, QLS, TES, TQD TTL "High" Turns Module OFF
Lucent-Compatible Trim T HAS, HBD, HBS, HES, HLS, QBS, QES,
QLS
Trim 1 IAS, LES
Enable 2 IAD, IAS, LES, SMS
Trim and Enable 3 IAS, LES
Pin Length and Heatsink Options Standard Pin Length is 0.180" (4.6mm)
0.110" (2.8mm) Pin Length 8 All Leaded Models
0.150" (3.8mm) Pin Length 9 All Leaded Models
0.24" (6.1mm) Horizontal Heatsink 1H All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
0.24" (6.1mm) Vertical Heatsink 1V All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
0.45" (11.4mm) Horizontal Heatsink 2H All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
0.45" (11.4mm) Vertical Heatsink 2V All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
0.95" (24.1mm) Horizontal Heatsink 3H All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
0.95" (24.1mm) Vertical Heatsink 3V All 1/4-Bricks, 1/2-Bricks, 3/4-Bricks, Full-Bricks Includes Thermal Pad
(Except HLS, HLD, QLS, TLD, and TKD Packages)
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.
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.
