QES SERIES
66 WATT
Powering Communications and Technology
DESCRIPTION
QES single output DC/DC converters provide up to 66
Watts of output power in an industry standard, quarter-
brick package. The QES converters feature open-frame
packaging, along with planar magnetics and a high
efficiency topology to provide maximum useable power
with minimal thermal constraints. The QES is suited to
telecom, networking, and industrial applications, and is
fully compatible with production board washing processes.
Efficiency vs. Load (48V Input)
FEATURES
95
90
85
80
75
70
• Industry Standard
• Wide Range Input
Voltage
Package
• 100°C Case Operation • 1500V Isolation
• Optional Trim and
Enable
• Short Circuit Protection
OES021ZC-A
OES025ZD-A
OES033ZE-A
OES040ZG-A
65
60
55
50
45
40
TECHNICAL SPECIFICATIONS
1
2
3
4
5
6
7
8
9
10
X10 = LOAD %
Input
Voltage Range
General
24 VDC Nominal
18 - 36 VDC
36 - 75 VDC
Shunt Diode
48 VDC Nominal
Turn-On Time
Remote Shutdown
30 ms
Input Reverse Input Current
Positive or Negative Logic
Remote Shutdown Reference
Switching Frequency
Isolation
V
Negative
300 kHz
in
Output
Input - Output
1500 VDC
1050 VDC
1050 VDC
±0.02%/°C
Input - Case
Output - Case
Setpoint Accuracy
±1%
Line Regulation V Min. - V Max., I
Rated
0.2% V
0.5% V
0.5 VDC
in
in
Min. - I
out
Max., V Nom.
out
out
Temperature Coefficient
Case Temperature
Operating Range
Load Regulation I
Remote Sense Headroom
Minimum Output Current
out
out
in
-40 To +100°C
-40 To +125°C
105 to 115°C
5 g, 10 - 55 Hz
2.5 X
Storage Range
10 %, I
Rated
out
Thermal Shutdown Range
Vibration, 3 Axes, 5 Min Each
Dynamic Regulation, Loadstep 25% I
Pk Deviation
out
4% V
†
out
MTBF (Bellcore TR-NWT-000332)
6
Settling Time
Voltage Trim Range
Short Circuit And Overcurrent Protection
Short Circuit Current Limit
Current Limit Threshold Range, % of I
OVP Trip Range
500 mS
±10%
Shutdown
200% I
10 hrs
Safety
Weight (Approx.)
UL, cUL, TUV
1.7 oz
out
110 - 140%
Notes
Rated
115 - 140% V
70 - 90% V
out
Nom.
Nom.
Latching
out
out
†
MTBF predictions may vary slightly from model to model.
UVP Trip Range
OVP/UVP Type
Specifications typically at 25°C, normal line, and full load,
unlessotherwise 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.
1