Datasheet QEB75-48S05, QEB75-48S05-K, QEB75-48S05-L, QEB75-48S05-M, QEB75-48S05-P Datasheet (PDUKE)

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GENERAL SPECIFICATIONS

Efficiency See table Isolation voltage

Input to Output Input to Case Output to Case

1600VDC,min 1000VDC,min 1000VDC,min

Isolation resistance

107 ohms, min

Isolation capacitance 2500 pF, ma

Switching frequency 270 KHz, typ Approvals and standard IEC60950, UL60950, EN60950 Case material

luminum base plate

Weight (approx) 42g (1.46 oz) MTBF Bellcore TR-NWT-000332, Tc=40 ºC , Io=80%,max 2.5 x 10

hrs

ENVIRONMENTAL SPECIFICATIONS

Operating base-plate temperature range (Note 4)

-40ºC to +100ºC

Over temperature protection 110ºC, ma

Storage temperature range

-55ºC to +125ºC

Thermal shock MIL-STD-810D Vibration 10~55Hz, 2G, 3minutes period, 30minutes along X,Y and Z

Humidity , Max , Non-Condensing 95%

EMC CHARACTERI STI CS

Conducted emissions

EN55022 (Note 5) EN55022 (Note 5)

Level

Level B

Radiated emissions

EN55022 Level A

ESD Radiated immunity Fast transient Surge Conducted immunity

EN61000-4-2 EN61000-4-3 EN1000-4-4 EN61000-4-5 EN61000-4-6

Perf. Criteria2

Perf. Criteria2 Perf. Criteria2 Perf. Criteria2 Perf. Criteria2

OUTPUT SPECIFICATIONS

Output power 75 Watts max Voltage accuracy Full load and nominal Vin ± 1.5% Voltage adjustability (Note1) + 10% , -20%

Minimum load

None

Line regulation LL to HL at FL ±0.2% Load regulation No load to Full load See table Remote Sense 10% of Vout

Ripple and noise

20MHz bandwidth (Measured with a 1uF M/C and a 10uF T/C)

100mVp-p

Temperature coefficient

0.02% / ºC, max

Transient response recovery time

25% load step change 200uS

Over voltage Protection threshold(Non-latching Hiccup)

120% Vout max

Over Current Protection threshold 110% ~ 140% of Iout Rated Short circuit protection Hiccup, automatics recovery

INPUT SPECIFICATIONS

Input voltage range 48V nominal input

36 – 75VDC

Under voltage lockout

Power up Power down

34V typ. 32V typ.

Input filter (Note 2)

L-C type

Input surge voltage 100mS max 100VDC Start up time

Nominal Vin and constant resistor load

Power up Remote ON/OFF

25mS typ 25mS typ

Remote ON/OFF (Note 3)

(Negative logic)

(Positive logic)

DC-DC ON DC-DC OFF DC-DC ON DC-DC OFF

ON/OFF

= 1mA max

Short or 0V < Vr < 1.2V Open or 3.5V < Vr < 15V Open or 3.5V < Vr < 15V

Short or 0V < Vr < 1.2V

• SINGLE OUTPUT UP TO 25A

• INDUSTRY STANDAR D FOOTPRINT

• NO MINIMUM LO AD

• ADJUSTABLE OUTP U T V O LTAGE

• UNDER-VOLTAGE LOCKOUT

• HIGH EFFICIENCY UP TO 90%

• COMPACT 2.28 X 1.45 X 0.50 INCH PACKAGE

• FIXED SWITCHING FREQUENCY

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. Remote sense and remote on/off facilities are included as standard, and the converters are comprehensively protected against over-current, over-voltage and over-temperature conditions. The QEB75 converters are especially suited to telecom, networking and industrial application.

TECHNICAL SPECIFICATION

ll specification s are typical at nominal input, full load and 25ºC otherwise noted

UL E193009 TUV R50020744 CB JPTUV-5363 CE MARK

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Model

Number

Input

Range

Output

Voltage

Output

Current

Eff

(6)

(%)

Load

regulation

QEB75-48S1P8 36 – 75 VDC 1.8 VDC 25A 85 5.4mV QEB75-48S2P5 36 – 75 VDC 2.5 VDC 25A 87 7.5mV QEB75-48S3P3 36 – 75 VDC 3.3 VDC 20A 90 10mV QEB75-48S05 36 – 75 VDC 5 VDC 15A 90 15mV

PRODUCT OPTI O NS TABLE

Option Suffix

Negative remote ON/OFF logic, 0.20” pin length (standard) -

Negative remote ON/OFF logic, 0.145” pin length -L

Negative remote ON/OFF logic, 0.11” pin length -K

Positive remote ON/OFF logic, 0.20” pin length -P

Positive remote ON/OFF logic, 0.145” pin length -S

Positive remote ON/OFF logic, 0.11” pin length -M

Note

1. Maximum output deviation is 10% inclusive of trim. If remote sense is not being used, the +V sense should be connected to its corresponding +OUTPUT and likewise the –sense should be connected to its corresponding –OUTPUT.

2. An external filter capacitor is required for normal operation. The capacitor should be capable of handing 1A ripple current for 48V models. Power mate

suggest: Nippon chemi-con KMF series, 220F/100V, ESR 90m.

3. The negative / positive logic and pin length are optional ( see table ). The pin voltage is referenced to negative input.

4. Heat sink is optional and P/N7G-00297G-00307G-00317G-0032.

5. The QEB75 meets level A and level B conducted emissions only with external components connected before the input pin to the converter.

6. Typical value at nominal input voltage and full load.

7. BASEPLATE GROUNDINGBase-plate should be grounded at one of the four screw bolts prior to operation.

8. The converter is provided by basic insulation.

PIN Define

1 - INPUT 2 ON/OFF 3 + INPUT 4 - OUTPUT 5 - SENSE 6 TRIM 7 + SENSE 8 + OUTPUT

PIN CONNECTION

Output can be externally trimmed by using the method shown below.

EXTERNAL OUTPUT TRIMMING

TRIM UP

TRIM DOWN

ExampleQEB75-48S3P3-P

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