EXB50-48S3V3R03-R - Emerson Network Power - Embedded Power

EXB50 SERIES

Single output

• High efficiency topology, 91% typical on EXB50-48S05

• Industry standard footprint

• Wide operating temperature -40°C to +70°C

(natural convection)

• 60% to 110% output trim

• No minimum load

• Overvoltage and overtemperature protection

• Remote sense compensation

• Remote on/off

The EXB50 series of 50 Watt single-output isolated DC/DC converters is

specifically designed to meet the power needs of low-voltage silicon. Housed in

an open-frame package with an industry-standard footprint, these latest-

generation converters offer efficiencies as high as 91%. The series comprises

three 24V-input models with 5V, 3.3V and 2V outputs, and six 48V-input models

with 12V, 5V, 3.3V 2.5V, 2.0V and 1.8V outputs. All models feature a wide input

range, trimmable output voltage and a 10A current rating (except the 12V).

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.

SPECIFICATION

All specifications are typical at nominal input, full load at 25°C unless otherwise stated

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[ 2 YEAR WARRANTY ]

INPUT SPECIFICATIONS CONTD.

Undervoltage lockout 24Vin: power up 17Vmax

24Vin power down 15Vmin

48Vin: power up 33.2Vmax

48Vin: power down 30.9Vmin

Start-up time Power up 30ms

(See Note 7) Remote ON/OFF 25ms

EMC CHARACTERISTICS

Conducted emissions EN55022 (See Note 3) Level A

EN55022 (See Note 3) Level B

Radiated emissions EN55022 Level A

Immunity: (See Note 13)

ESD air EN61000-4-2 8kV (NP), 15kV (RP)

ESD contact EN61000-4-2 6kV (NP), 8kV (RP)

Radiated field enclosure EN61000-4-3 10V/m (NP)

Conducted (DC power) EN61000-4-6 10V (NP)

Conducted (signal) EN61000-4-6 10V (NP)

GENERAL SPECIFICATIONS

Efficiency See table

Basic insulation Input/output 1500VDC

Switching frequency Fixed 300kHz typ.

Approvals and IEC60950/EN60950, UL/cUL1950

standards (See Note 5) CSA C22.2 No. 950

Material flammability UL94V-0

Weight 50g (1.77oz)

MTBF MIL-HDBK-217F @ 25°C 270,000

100% load ground benign hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance Operating ambient -40°C to +70°C

(See Notes 11 & 12) temperature (natural convection)

Non-operating -55°C to +125°C

ETS 300 019-2-3 Classes T3.1 to T3.5

Altitude 3,000 metres Derate max. output

(See Note 10) current by 20%

10,000 metres Derate max. output

current by 50%

OUTPUT SPECIFICATIONS

Voltage adjustability 60% to 110%

Set point accuracy ±1.5% max.

Line regulation Low line to high line 0.1% max.

Load regulation Full load to min. load 0.2% max.

Total error band ±3.0%

Minimum load 0%

Overshoot At turn-on and tur n-off None

Undershoot None

Ripple and noise 5Hz to 20MHz 100mV pk-pk

(See Note 1) 20mV rms

Transient response 24V models 3.0% peak deviation

(See Notes 2 and 8) 48V models 2.0% peak deviation,

200µs recovery to

within total error band

Remote sense (See Note 9) 10% o/p voltage change

INPUT SPECIFICATIONS

Input voltage range 24Vin nominal 18 to 36VDC

48Vin nominal 36 to 75VDC

(See Note 14) 100V 100ms Transient

Input current 24V: No load 85mA max.

24V: Remote OFF 20mA max.

48V: No load 60mA max.

48V: Remote OFF 10mA max.

Input current (max.) 24V models 3.25A max. @ Io max.

(See Note 4) and Vin = 18 to 36V

48V models 1.7A max. @ Io max.

and Vin = 36 to 75V

Input reflected ripple 24V models 20mA (pk-pk) typ.

(See Note 6) 48V models 50mA (pk-pk) typ.

Remote ON/OFF (See Note 15)

Logic compatibility Open collector ref to -input

ON Open circuit or >2VDC

OFF <1.2VDC

20 to 50 Watt

High efficiency DC/DC converters

DC/DC CONVERTERS |20-

50W DC/DC

http://www.artesyn.com

Data Sheet © Artesyn Technologies

2002

The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising

from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.

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Please consult our website for the following items: ✔ Application Note ✔ Long Form Data Sheet

Notes

1 Measured as per recommended set-up. 150mV pk-pk for EXB50-48S12

2 di/dt = 0.1A/µs, Vin = 24/48VDC, Tc = 25°C, load change = 0.5 lo max. to

0.75 lo max. and 0.75 lo max. to 0.5 lo max.

3 The EXB50 meets level A and level B conducted emissions only with external

components connected before the input pins to the converter.

4 Recommended input fusing is a 6.3A HRC 200V rated fuse on the 24V and

3.15A HRC 200V rated fuse on the 48V.

5 This product is only for inclusion by professional installers within other

equipment and must not be operated as a stand alone product.

6 Simulated source impedance of 12µH. 12µH inductor in series with +Vin.

7 Start-up into resistive load.

8 EXB50-24S2V0 model has 5.0% max. deviation and 300µs recovery.

9 Maximum output deviation is 10% inclusive of trim.

10 Contact factory for operation at higher altitude.

11 See Application Note 113 for Derating Curves.

12 Wide operating temperature on the EXB50-24S05 is -40°C to + 60°C

13 Input transient (48V) ETS300 132-2 ETR283

14 Applies to 3V3 version only. Please add suffix 'R03' to the model number

e.g. EXB50-48S3V3R03. This is also active low remote on/off.

15 Active low remote on/off available. Add suffix '-R' to part number.

TRIM

+ Sense

Trim

- Sense

TRIM

DOWN

RT1

RT2

OPEN-FRAME

HEIGHT

STAND-OFFS

4 PLACES

ALL DIMENSIONS IN INCHES (mm)

General Tolerance ±0.010 (0.25)

Unless Otherwise Specified

Ø0.040 ±0.02

(Ø1.02 ±0.05)

1.90

(48.26) 0.19

(4.83)

2.28 ±0.02

(57.91 ±0.5)

0.02

(0.50)

0.16±0.02

(4.10±0.5)

0.138±0.02

(3.50±0.5)

0.20

(5.08)

2.00

(50.80)

1.40

(35.56)

1.00

(25.40)

0.40

(10.16)

0.70

(17.78)

1.00

(25.40)

1.40

(35.56)

2.40 ±0.02

(60.96 ±0.5)

0.50

(12.70) 0.43±0.02

(10.90±0.5)

Ø0.079±0.002

(Ø2.03±0.05)

BOTTOM

VIEW

CAUTION: Hazardous internal voltages and high temperatures.

Ensure that unit is not user accessible.

DS_EXB50S_20020412.PDF

EXTERNAL OUTPUT TRIMMING

Output can be externally trimmed

by using the method shown below.

PIN CONNECTIONS

PIN NO FUNCTION

1- Vin

2 No Pin

3 Remote ON/OFF

4+ Vin

5 + Vout

6 + Sense

7 Trim

8 - Sense

9 - Vout

PROTECTION

Short circuit protection Continuous

Overvoltage protection Non-latching clamp

Thermal protection 120°C hot spot temperature with

automatic recovery

TELECOM SPECIFICATION

Central office interface A ETS300-132-2, input voltage

and current requirements

OUTPUT INPUT OVP OUTPUT OUTPUT OUTPUT EFFICIENCY REGULATION MODEL

POWER VOLTAGE VOLTAGE CURRENT CURRENT (TYP.) LINE LOAD NUMBER

(MAX.) (MIN.) (MAX.)

20W 18-36VDC 2.4VDC 2.0V 0A 10A 86.5% ±0.1% ±0.2% EXB50-24S2V0

33W 18-36VDC 3.9VDC 3.3V 0A 10A 89% ±0.1% ±0.2% EXB50-24S3V3

50W 18-36VDC 6.0VDC 5.0V 0A 10A 90% ±0.1% ±0.2% EXB50-24S05

18W 36-75VDC 2.15VDC 1.8V 0A 10A 85.7% ±0.1% ±0.2% EXB50-48S1V8(15)

20W 36-75VDC 2.45VDC 2.0V 0A 10A 87.5% ±0.1% ±0.2% EXB50-48S2V0(15)

25W 36-75VDC 2.95VDC 2.5V 0A 10A 87.5% ±0.1% ±0.2% EXB50-48S2V5(15)

33W 36-75VDC 4.00VDC 3.3V 0A 10A 90.0% ±0.1% ±0.2% EXB50-48S3V3(15)

50W 36-75VDC 6.15VDC 5.0V 0A 10A 91.0% ±0.1% ±0.2% EXB50-48S05(15)

50W 36-75VDC 14.2VDC 12.0V 0A 4.2A 90.0% ±0.1% ±0.2% EXB50-48S12(15)