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2013/5/3

QEB75 SERIES

75 WATTS

DC-DC CONVERTER

INPUT SPECIFICATIONS

Input voltage range

24VDC nominal input

48VDC nominal input

18 ~ 36VDC

36 ~ 75VDC

Input filter

L-C type

Input surge voltage

24VDC input

48VDC input

50VDC 100ms, max.

100VDC 100ms, max.

Start up time

Nominal input and

constant resistive load

Power up

Remote ON/OFF

25ms

25ms

Start-up voltage

24VDC input

48VDC input

18VDC, max.

36VDC, max.

Shutdown voltage

24VDC input

48VDC input

15VDC

32VDC

Remote ON/OFF (Note 6)

Negative logic(Standard)

Positive logic(Option)

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

Input current of remote control pin

Nominal input

-0.5~1.0mA

Remote off state input current

Nominal input

2.5mA

ENVIRONMENTAL SPECIFICATIONS

Operating base-plate temperature range (Note 7)

-40ºC ~ +100ºC

Over temperature protection

+110ºC

Storage temperature range

-55ºC ~ +125ºC

Thermal shock

MIL-STD-810F

Vibration

MIL-STD-810F

Relative humidity(non-condensing)

5% to 95% RH

EMC CHARACTERISTICS

EMI (Note 8)

EN55022

Class A, Class B

Radiated immunity

EN61000-4-3

10 V/m

Perf. Criteria A

Fast transient (Note 9)

EN61000-4-4

± 2kV

Perf. Criteria B

Surge (Note 9)

EN61000-4-5

± 1kV

Perf. Criteria B

Conducted immunity

EN61000-4-6

10 Vr.m.s

Perf. Criteria A

OUTPUT SPECIFICATIONS

Output power

75 Watts, max.

Voltage accuracy

± 1.5%

Minimum load

0%

Voltage adjustability

(Note 5)

+ 10% , -20%

Line regulation

LL to HL at Full Load

±0.2%

Load regulation

No load to Full Load

±0.3%

Remote Sense

(Note 5)

10% of Vout(nom)

Ripple and noise

20MHz bandwidth

(Measured with a 1µFM/C and a 10µFT/C)

See table

Temperature coefficient

±0.02% / ºC, max.

Transient response recovery time

25% load step change

200µs

Over voltage Protection threshold

(Non-latching Hiccup)

120% of Vout(nom) max.

Over Current Protection threshold

110% ~ 140% of Iout Rated

Short circuit protection

Continuous, automatics recovery

GENERAL SPECIFICATIONS

Efficiency

See table

Isolation voltage

Input to Output

Input(Output) to Base-plate

1600 VDC, min. 1minute

1000 VDC, min. 1minute

Isolation resistance

500VDC

10

7

ohms, min.

Isolation capacitance

2500 pF, max.

Switching frequency

270kHz±10%

Design meets safety standard

IEC60950-1, UL60950-1, EN60950-1

Case material

Aluminum base-plate

Weight (approx)

42g (1.46 oz)

MTBF (Note 1)

BELLCORE TR-NWT-000332

MIL-HDBK-217F

2.500 x 10

4.422 x 10

APPLICATIONS

Wireless Network

Telecom/Datacom

Industry Control System

Distributed Power Architectures

Semiconductor Equipment

FEATURES

OPTIONS

Positive logic Remote on/off, Pin length

DESCRIPTION

QEB75 single output DC/DC converters provide up to 75 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 25A current rating.