†MTBF predictions may vary slightly from model to model.
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.
TECHNICAL SPECIFICATIONS
• Industry Standard
Package
• 100°C Case Operation
• Optional Trim and
Enable
• Wide Range Input
Voltage
• 1500V Isolation
• Short Circuit Protection
DESCRIPTION
FEATURES
QES SERIES
66 WATT
Turn-On Time 30 ms
Remote Shutdown Positive or Negative Logic
Remote Shutdown Reference Vin Negative
Switching Frequency 300 kHz
Isolation
Input - Output 1500 VDC
Input - Case 1050 VDC
Output - Case 1050 VDC
Temperature Coefficient ±0.02%/°C
Case Temperature
Operating Range -40 To +100°C
Storage Range -40 To +125°C
Thermal Shutdown Range 105 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
Setpoint Accuracy ±1%
Line Regulation Vin Min. - Vin Max., Iout Rated 0.2% Vout
Load Regulation Iout Min. - Iout Max., Vin Nom. 0.5% Vout
Remote Sense Headroom 0.5 VDC
Minimum Output Current 10 %, Iout Rated
Dynamic Regulation, Loadstep 25% Iout
Pk Deviation 4% Vout
Settling Time 500 mS
Voltage Trim Range ±10%
Short Circuit And Overcurrent Protection Shutdown
Short Circuit Current Limit 200% Iout
Current Limit Threshold Range, % of Iout Rated 110 - 140%
OVP Trip Range 115 - 140% Vout Nom.
UVP Trip Range 70 - 90% Vout Nom.
OVP/UVP Type Latching
Voltage Range
24 VDC Nominal 18 - 36 VDC
48 VDC Nominal 36 - 75 VDC
Input Reverse Input Current Shunt Diode
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.
Input
Output
Notes
Efficiency vs. Load (48V Input)
General