
(888) IPD-CONVerters
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(888) 473-2668
QAS SERIES - 50 WATT
DESCRIPTION FEATURES
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www.ipdconverters.com
QAS DC/DC converters are designed to provide
higher output voltages for telecom and industrial
applications. The QAS features remote sense for
accurate point of load regulation, five-sided shielding,
and 1500 VDC isolation. The QAS also provides
output voltage trim, overcurrent, short circuit, and
overvoltage protection, allowing use in a wide range of
applications.
TECHNICAL SPECIFICA TIONS
Input
Voltage Range
48 VDC Nominal 36 - 72 VDC
Reflected Ripple 50 mA
Input Reverse Voltage Protection Shunt Diode
Input Undervoltage Lockout
Turn On 34 VDC
Turn Off 30 VDC
Output
Setpoint Accuracy ±1%
Line Regulation Vin Min. - Vin Max., I
Load Regulation I
Minimum Output Current 10 % I
Dynamic Regulation, Loadstep 25% I
Pk Deviation 57V and 60V Outputs 8% V
Pk Deviation 5V Outputs 4% V
Settling Time 500 µs
Voltage Trim Range ±10%
Ripple and Noise, RMS, 100 MHz BW, 5V Output 100 mV Pk-Pk
Ripple and Noise, RMS, 100 MHz BW, 57V and 60V Outputs 200 mV Pk-Pk
Short Circuit / Overcurrent Protection Shutdown / Hiccup
Current Limit Threshold Range, % of I
OVP Trip Range 120 - 140% V
OVP Type Second Control Loop
Min. - I
out
out
Rated ±0.2% V
out
Max., Vin Nom. ±0.2% V
, Rated
out
Rated 110 - 130%
out
out
Nom.
out
out
out
out
out
• Overvoltage Protection
• Wide Range Input
• Short Circuit Protection
• 5-Sided Shielding
• Remote Enable
• 1500V Isolation
• Remote Sense and
Voltage Trim
Efficiency vs. Load (48V Input)
95
90
85
EFFICIENCY %
80
75
10 20 30 40 50 60 70 80 90 100
General
Turn-On Time 5V Output 10 ms
Turn-On Time 57V and 60V Outputs 15 ms
Remote Shutdown Positive Logic
Switching Frequency 300 kHz
Isolation
Input - Output 1500 VDC
Input - Case 1050 VDC
Output - Case 500 VDC
Temperature Coefficient 0.03%/°C
Case Temperature
Operating Range -25 To +85°C
Storage Range -40 To +125°C
Humidity Max., Non-Condensing 95%
Vibration, 3 Axes, 5 Min Each 5 g
MTBF† (Bellcore TR-NWT-000332) Consult Factory
Safety Consult Factory
Weight (Approx.) 4.0 oz
Notes
1
For negative logic, add suffix “N” to model number.
†
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.
QAS060Z57
EFF. (36v)
EFF. (48v)
EFF. (75v)
LOAD %
C-28

QAS SERIES - 50 WATT
MODELS - (See the last page of this file for options.)
Vin
(Volts)
48
48
48
Vin Range
(Volts)
36 - 72
36 - 72
36 - 72
Iin Max.*
(Amps)
1.60
2.00
1.60
Denot es advanced product releas e. Consult f actory for product av ailabi lit y.
* Maxi mum i nput curr ent at mini mum input vo ltage, m aximum rat ed out put power.
** At nomi nal Vin, r ated output .
MECHANICAL DRAWING
1.850"(47.0mm)
1.000"(25.4mm)
0.600"(15.2mm)
0
-0.150"(-3.8mm)
-0.35"(-8.9mm)
-0.15"
(-3.8mm)
1
2
3
0
0.300"
(7.6mm)
Vout
(Volts)
5.0
57.0
60.0
2.80"
(71.1mm)
STANDOFF 4PL
MOUNTING INSERTS M3X.5 THRU.
Iout Rated
(Amps)
10.0
1.10
0.83
BOTTOM VIEW
2.200"
(55.9mm)
Rip ple & No ise
4
5
6
7
8
2.500"
(63.5mm)
Pk-Pk (mV)
50
200
200
1.300"(33.0mm)
0.900"(22.9mm)
0.400"(10.2mm)
0.100"(2.5mm)
-0.200"(-5.1mm)
Effici ency
Typ. **
86%
87%
88%
2.40"
(61.0mm)
Model
QAS050ZG
QAS060Z57
QAS050Z60
Thermal Impedance
Natural Convection 10.0 °C/W
100 LFM 7.6 °C/W
200 LFM 5.7 °C/W
300 LFM 4.4 °C/W
400 LFM 3.4 °C/W
Note:
Thermal impedance data is dependent on
many environmental factors. The exact
thermal performance should be validated for
specific application.
DIA 0.040"
(1.0mm)
Pin Function
1-V
2+V
3 Enable
4-V
5+V
in
in
out
out
6 -Sense
7 Trim
8 +Sense
C-29
0.18" (4.6mm)
0.50"
(12.7mm)
Tolerances
Inches: (Millimeters)
.XX ± 0.020 .X ± 0.5
.XXX ± 0.010 .XX ± 0.25
Pin:
± 0.002 ± 0.05
( Dimensions as listed unless otherwise
specified.)

OPTIONS
When ordering equipment options, use the following suffix information. Select the option(s) that
you prefer and add them to the model number. Example ordering options are located below the
options table.
OPTION SUFFIX APPLICABLE SERIES REMARKS
Negative Logic N HAS, HBD, HBS, HES, LES, QBS,
Lucent Compatible Trim T HAS, HBD, HBS, HES, QBS, QES
Terminal Strip TS XWS, XWD, XWT
Trim 1 IAS, LES
Enable 2 IAD, IAS, LES, SMS
Trim and Enable 3 IAS, LES
Current Share 4 SMS
Headerless Y Encapsulat ed EWS, IWS, OWS
PIN LENGTH AND HEATSINK
OPTIONS
0.110” (2.8mm) Pin Length 8 All Units (Except SMS)
0.150” (3.8mm) Pin Length 9 All Units (Except SMS)
0.24” (6.1mm) Horizontal Heatsink 1H All Units (Except DIP, SIP, and SM
0.24” (6.1mm) Vertical Heatsink 1V All Units (Except DIP, SIP, and SM
0.45” (11.4mm) Horizontal
Heatsink
0.45” (11.4mm) Vertical Heatsink 2V All Units (Except DIP, SIP, and SM
0.95” (24.1mm) Horizontal
Heatsink
0.95” (24.1mm) Vertical Heatsink 3V All Units (Except DIP, SIP, and SM
2H All Units (Except DIP, SIP, and SM
3H All Units (Except DIP, SIP, and SM
QES, TES, TQD
Packages)
Packages)
Packages)
Packages)
Packages)
Packages)
TTL “Low” Turns Module ON
TTL “High” Turns Module OFF
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 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.
C105