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QAS SERIES - 50 WATT
DESCRIPTION
FEATURES
鈥?Overvoltage Protection
鈥?5-Sided Shielding
QAS DC/DC converters are designed to provide
鈥?Wide Range Input
鈥?Remote Enable
higher output voltages for telecom and industrial
鈥?Short Circuit Protection
applications. The QAS features remote sense for
鈥?1500V Isolation
accurate point of load regulation, five-sided shielding,
鈥?Remote Sense and
Voltage Trim
and 1500 VDC isolation. The QAS also provides
output voltage trim, overcurrent, short circuit, and
overvoltage protection, allowing use in a wide range of
Efficiency vs. Load (48V Input)
applications.
95
EFFICIENCY %
90
85
QAS060Z57
EFF. (36v)
80
EFF. (48v)
EFF. (75v)
75
10
20
30
40
50
60
70
80
90
100
LOAD %
TECHNICAL SPECIFICATIONS
Input
Voltage Range
48 VDC Nominal
Reflected Ripple
Input Reverse Voltage Protection
Input Undervoltage Lockout
Turn On
Turn Off
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.
Minimum Output Current
鹵1%
鹵0.2% V
out
鹵0.2% V
out
10 % I
out
,
Rated
36 - 72 VDC
50 mA
Shunt Diode
34 VDC
30 VDC
Turn-On Time 5V Output
Turn-On Time 57V and 60V Outputs
Remote Shutdown
Switching Frequency
Isolation
Input - Output
Input - Case
Output - Case
Temperature Coefficient
Case Temperature
Operating Range
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
MTBF
鈥?/div>
(Bellcore TR-NWT-000332)
Safety
Weight (Approx.)
General
10 ms
15 ms
Positive Logic
300 kHz
1500 VDC
1050 VDC
500 VDC
0.03%/擄C
-25 To +85擄C
-40 To +125擄C
95%
5g
Consult Factory
Consult Factory
4.0 oz
Dynamic Regulation, Loadstep
25% I
out
Pk Deviation 57V and 60V Outputs
8% V
out
Pk Deviation 5V Outputs
4% V
out
Settling Time
500
碌s
Voltage Trim Range
鹵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
out
Rated
110 - 130%
OVP Trip Range
120 - 140% V
out
Nom.
OVP Type
Second Control Loop
Notes
1
For negative logic, add suffix 鈥淣鈥?to model number.
MTBF predictions may vary slightly from model to model.
鈥?/div>
Specifications typically at 25擄C, normal line, and full load, unless otherwise
stated.
Soldering Conditions: I/O pins, 260擄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.
C-28
1
2
3
