QEB125 SERIES
125 WATTS DC-DC CONVERTER
FEATURES
• 125 WATTS MAXIMUM OUTPUT POWER
• SINGLE OUTPUT UP TO 35A
• COMPACT 2.28 X 1.45 X 0.50 INCH PACKAGE
• HIGH EFFICIENCY UP TO 90%
• 2:1 WIDE INPUT VOLTAGE RANGE
• FIXED SWITCHING FREQUENCY
• INDUSTRY STANDARD FOOTPRINT
• NO MINIMUM LOAD REQUIRED
• ADJUSTABLE OUTPUT VOLTAGE
• UNDER-VOLTAGE LOCKOUT
• INPUT TO OUTPUT ISOLATION: 1600VDC
• CE MARK MEETS 2006/95/EC, 2011/95/EC AND 2004/108/EC
• SAFETY MEETS UL60950-1, EN60950-1 AND IEC60950-1
• ISO9001 CERTIFIED MANUFACTURING FACILITIES
• COMPLIANT TO RoHS EU DIRECTIVE 2011/65/EU
OPTIONS
Positive logic Remote on/off, Pin length
APPLICATIONS
Wireless Network
Telecom/Datacom
DESCRIPTION
QEB125 single output DC/DC converters provide up to 125 watts of output power
in an industry standard quarter-brick package and footprint. These units are
specifically designed to meet the power needs of low-voltage silicon. All models
feature a wide input range, trimmable output voltage and a 35A current rating.
Industry Control System
Distributed Power Architectures
Semiconductor Equipment
T E C H N I C A L S P E C I F I C AT I O N All specifications are typical at nominal input, full load and 25ºC otherwise noted
INPUT SPECIFICATIONS
OUTPUT SPECIFICATIONS
Output power
24VDC nominal input
48VDC nominal input
18 ~ 36VDC
36 ~ 75VDC
125 Watts, max.
1.5%
Input voltage range
Input filter
Voltage accuracy
L-C type
Minimum load
0%
24VDC input
48VDC input
Nominal input and
constant resistive load
50VDC 100ms, max.
100VDC 100ms, max.
25ms
Input surge voltage
Voltage adjustability
Line regulation
(Note 5)
+ 10% , -20%
0.2%
Power up
Remote ON/OFF
LL to HL at Full Load
No load to Full Load
(Note 5)
Start up time
25ms
18VDC, max.
36VDC, max.
15VDC
Load regulation
Remote Sense
0.3%
24VDC input
48VDC input
Start-up voltage
10% of Vout(nom)
24VDC input
48VDC input
20MHz bandwidth
(Measured with a 1µF M/C and a 10µFT/C)
Shutdown voltage
See table
Ripple and noise
32VDC
Remote ON/OFF (Note 6)
Negative logic(Standard)
0.02% / ºC, max.
Temperature coefficient
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
Short or 0V < Vr < 1.2V
Open or 3V < Vr < 15V
Open or 3V < Vr < 15V
Short or 0V < Vr < 1.2V
-0.5~1.0mA
Transient response recovery time
25% load step change
200µs
Over voltage protection threshold
(Non-latching Hiccup)
Positive logic(Option)
120% of Vout(nom) max.
Input current of remote control pin
Remote off state input current
Nominal input
Nominal input
Over Current Protection threshold
Short circuit protection
110% ~ 140% of Iout Rated
2.5mA
Continuous, automatics recovery
ENVIRONMENTAL SPECIFICATIONS
Operating base-plate temperature range (Note 7)
Over temperature protection
GENERAL SPECIFICATIONS
-40ºC ~ +100ºC
+110ºC
Efficiency
See table
Input to Output
Isolation voltage
1600 VDC, min. 1minute
Input(Output) to Base-plate 1000 VDC, min. 1minute
Storage temperature range
-55ºC ~ +125ºC
MIL-STD-810F
Thermal shock
7
Isolation resistance
Isolation capacitance
Switching frequency
500VDC
10 ohms, min.
2500 pF, max.
270kHz 10%
Vibration
10~55Hz, 2G, 30minutes along X,Y and Z
5% to 95% RH
Relative humidity(non-condensing)
EMC CHARACTERISTICS
Design meets safety standard
Case material
IEC60950-1, UL60950-1, EN60950-1
Aluminum base-plate
EMI (Note 8)
EN55022
Class A, Class B
Radiated immunity
EN61000-4-3
10 V/m
2kV
Perf. Criteria A
Perf. Criteria B
Perf. Criteria B
Perf. Criteria A
Fast transient (Note 9) EN61000-4-4
Weight (approx)
42g (1.46 oz)
2.500 x 106 hrs
1.257 x 105 hrs
1kV
Surge (Note 9)
EN61000-4-5
EN61000-4-6
BELLCORE TR-NWT-000332
MIL-HDBK-217F
MTBF (Note 1)
Conducted immunity
10 Vr.m.s
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