CXA20-48S05H - Emerson Network Power - Embedded Power

CXA20 SERIES

Single and dual output

[ 2 YEAR WARRANTY ]

• 4:1 input voltage range

• No minimum load on singles

• 6A on 3.3V output (@ 48Vin) at 50˚C in still air

• Wide operating temperature with overtemperature

protection

• ±10% output voltage trim

• Remote On/Off control

• Overvoltage protection

• Pin compatible with NFC15 and NFC20 series

The CXA20 is a new 20W addition to the CXA family of open-frame, isolated, DC/DC

converters. The five model series features a 4:1 input voltage range of 18 to 75VDC,

making it suitable for a wide variety of communications and distributed power

applications. With its 2.0 x 1.6 inch industry standard footprint, the CXA20 provides

an easy upgrade option for new and existing Artesyn customers seeking a high-

performance, cost-effective power supply. The CXA20 is available in output voltages

of 3.3V, 5V, 12V, ±5V and ±12V. The 3.3V version delivering up to 6A is fully rated to

20W. Typical efficiency for the CXA20 is 83 percent. The CXA20 offers remote on/off,

as well as overvoltage, overtemperature and short circuit protection features.

SPECIFICATION

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

PAGE 118

OUTPUT SPECIFICATIONS

Voltage accuracy ±1.0%

Line regulation Singles/dual positives ±0.1%

(LL to HL) Dual negatives ±0.1%

Load regulation Full load to minimum load

(not incl. cross reg.) S3V3 ±0.2%

Singles/dual positives ±0.1%

Dual negatives ±0.1%

Minimum load Singles None

Duals (for imbalanced loads) 10%

Ripple and noise S3V3, S05, D05 75mV pk-pk max.

20MHz bandwidth S12, D12 100mV pk-pk max.

All models 20mV rms max.

Temperature coefficient ±0.02%/°C

Overvoltage protection See Application Note 107

Short circuit protection Hiccup Continuous

Short <20mΩautomatic recovery

Transient response 25% load step ±2.0% max. dev.,

300µs recovery to

within total error band

Load cross regulation 10% load to full load, ±7.0%

(See Note 1) either output

INPUT SPECIFICATIONS

Input voltage range 48Vin nominal 18 to 75VDC

Input fuse HRC recommended 2.0A

Max. input rise 48V ETS300-132 5V/ms

and fall time

UVLO turn ON voltage (See Note 4) 92%

UVLO turn OFF voltage (See Note 4) 86%

Remote ON/OFF

Logic compatibility CMOS/TTL/Open Collector

ON Open circuit or >2VDC

OFF <1.2VDC

NEW

Product

ELECTROMAGNETIC COMPATIBILITY SPECIFICATIONS

ETS 300 386-1 table 5

Conducted emissions EN55022, ext. cap. (Note 5) Level A

EN55022, external filter, Level B

VDE0878, 48V models

Radiated emissions EN55022-B See App. Note 107

Immunity:

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

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

EFT DC power EN61000-4-4 2kV (NP), 4kV (LFS)

EFT signal EN61000-4-4 1kV (NP), 2kV (LFS)

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

Surges indoor signal EN61000-4-5 500V (RP)

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

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

Input transients ETS 300 132-2, ETR 283

GENERAL SPECIFICATIONS

Efficiency See table

Overtemp. shutdown 120˚C

Isolation voltage Input/output test voltage 1500VDC

Switching frequency Fixed 400kHz

Approvals and standards

EN60950

(See Notes 6,7,8) UL1950 File No. E136005

Material flammability UL94V-0

Weight 26g (0.92 oz)

MTBF MIL-HDBK-217F 400,000 hours

(Representative model Parts stress method

48S05 @ 48Vin) Ground Benign @ 25°C

ENVIRONMENTAL SPECIFICATIONS

Thermal performance Operating ambient -40°C to +60°C,

temperature (See Note 9)

Non-operating -55°C to +125°C

ETS 300 019-2-3 Classes T3.1, 3.2, 3.3, 3.5

Air temperature Low: IEC 68-2-1 -40°C

High: IEC 68-2-2 +60°C

Change: IEC 68-2-14 -40°C to +60°C

Relative humidity IEC 68-2-56 10% to 100% RH

IEC 68-2-30 Condensation

INPUT OUTPUT OVERVOLTAGE OUTPUT TYPICAL MODEL

VOLTAGE VOLTAGE PROTECTION (2,3) CURRENT (MAX.) EFFICIENCY NUMBER(10)

18-75VDC 3.3V 3.7V 6.0A 80% CXA20-48S3V3

18-75VDC 5.0V 6.67V 4.0A 83% CXA20-48S05

18-75VDC 12V 14.25V 1.66A 83% CXA20-48S12

18-75VDC ±5V 6.67V 2.0A ea. 84% CXA20-48D05

18-75VDC ±12V 14.25V 0.83A ea. 84% CXA20-48D12

20 Watt

DC/DC converters

DC/DC CONVERTERS |

20W DC/DC

http://www.artesyn.com

Notes

1 Negative output voltage deviation when either load is changed.

2 For TVS/Zener specifications please see Application Note 107.

3 On dual output models, OVP protection is on positive outputs only.

4 With respect to minimum input voltage.

5 With one external 4µF capacitor across the input.

6 Unit provides basic insulation up to the 75VDC maximum input voltage.

7 Maximum continuous output power not to exceed 20 Watts.

8 User must provide 2A HRC (recommended) in line fuse in order to comply

with safety approvals.

9 Download Application Note 107 and the full data sheet from our website.

10 Active high remote on/off is available. Standard product is active low.

Designate with the suffix 'H', e.g. CXA20-48S05H.

CAUTION: Hazardous internal voltages and high temperatures.

Ensure that unit is not user accessible.

STAND-OFFS

4 PLACES Ø0.040 ±0.004

(Ø1.02 ±0.1)

2.00 ±0.02

(50.80 ±0.5)

1.80

(45.72)

ALL DIMENSIONS IN INCHES (mm)

General tolerance ±0.010 (±0.25)

unless otherwise specified

0.02 ±0.004

(0.50 ±0.1)

1.60 ±0.02

(40.64 ±0.5)

0.70

(17.78) 0.20

(5.08)

0.10

(2.54)

0.30

(7.62) 0.70

(17.78)

0.50

(12.70)

0.60

(15.24)

0.14 ±0.02

(3.60 ±0.5)

0.413

(10.50)

MAX. OPEN

FRAME

HEIGHT

BOTTOM

VIEW

TRIM

DOWN

+ Output

TRIM

Trim

- Output

PIN CONNECTIONS

PIN NUMBER SINGLE OUTPUT DUAL OUTPUT

1 + Input + Input

2 – Input - Input

3 No Pin No Pin

4 Remote On/Off Remote On/Off

5 No Pin + Output

6 + Output Common

7 - Output - Output

8 Trim Trim

2000

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.

Derating Curve Output Current vs Temperature S3V3

Natural Convection (<0.1m/s airflow)

-40˚C

100

Ambient Temperature

Rated Output Current

-20˚C0˚20˚40˚60˚80˚100˚

75%

PAGE 119

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

MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT

MODEL FULL Vin RANGE Vin <60VDC

48S3V3 50˚C 50˚C

48S05 55˚C 60˚C

48S12 50˚C 55˚C

48D05 55˚C 60˚C

48D12 50˚C 60˚C

EXTERNAL OUTPUT TRIMMING

All models can be externally trimmed by ±10% using either

method shown below. See Application Note 107 for details. 5

new product

DS_CXA20_20000101.PDF