BXA15 ARTESYN [Artesyn Technologies], BXA15 Datasheet

BXA15

Manufacturer Part Number

BXA15

Description

Design Note 100 Rev. 01 - Feb. 1999

Manufacturer

ARTESYN [Artesyn Technologies]

Datasheet

1.BXA15.pdf (4 pages)

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Bonase Electronics (HK) Co., Limited

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BXA15-48S05

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Bonase Electronics (HK) Co., Limited

Part Number:

BXA15-48S12-F

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ARTESYN

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Bonase Electronics (HK) Co., Limited

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BXA15-48S12-F

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1. Safety and the Low Voltage Directive

The BXA15 and BXA30 series is intended to be supplied only from a

SELV (Safe Extra Low Voltage) circuit or a TNV (Telecommunications

Network Voltage) power source which are insulated from the AC

mains by reinforced insulation. Basic isolation, tested to 1,500VDC,

for EN60950 and UL1950, is provided.

2. Electromagnetic Compatibility Immunity

Good design practice dictates that the electronic system be immune

to noise interference. This practice has now been encapsulated in

European law in the form of the EMC directive. It is imperative that

any system on sale in the European Union meets the terms of the

EMC directive and thus carries the CE mark. To simplify system

compliance to the EMC Directive, the BXA15 and BXA30 have been

designed to meet and comply with the necessary immunity stan-

dards.

Description

Electro-Static

Discharge

Radiated Immunity

Fast Transients/Bursts

Surges

3. Electromagnetic Compatibility Conducted and

Radiated Interference

Radiated Interference:

The BXA15 and BXA30 series meet the harmonised standard

EN55022 level A and CISPR22 level A. The series almost meets the

requirements of level B. System performance to level B could be

assured with the appropriate enclosure.

Conducted Interference - Level A Internal Filter Option:

All three input voltage versions of the series, 12VDC, 24VDC and

48VDC, are available with an internal filter option which meets input

conducted noise per VDE0871/8-A or EN55022-A. To order a model

with the internal filter, add ‘-F’ after the model number eg. BXA15-

48S12-F.

PAGE 1

SELV

TNV

DC Distributed Power of 12V, 24V or 48V

Central Office -48V

Standard

EN61000-4-2

IEC801-3

EN61000-4-4

EN61000-4-5

Compliance Level

4kV Contact

8kV Discharge

10V/m

2kV

0.5KV (40 Ohm

Secondary surge

protection)

Generator,

BXA15 and BXA30 SERIES

Design Note 100 Rev. 01 - Feb. 1999

• Safety and the low voltage directive

• Electromagnetic Compatibility Immunity

• Electromagnetic Compatibility Conducted and

• Telecom and Distributed Power Architecture Features

• System Protection Features

• Thermal Considerations

• Input Impedance Considerations

Radiated Interference

Conducted Interference - Level B External Filter:

The addition of an external capacitor enables the BXA15 and

BXA30 products to meet VDE0871/8-B, EN55022-B and CISPR22-B

conducted noise limits. The test set-up is per VDE 0877 Part 1 fig.4

with the load < 10 cm's away from the test converter.

For height critical applications, the ITW Paktron capacitor offers a

low profile of <7mm.

Note on the test set up and system grounding:

The products meet input conducted noise VDE0878-B, EN55022-B

and CISPR22-B 10kHz - 30MHz, if the load is not more than 10

cm's away. Tightly parallel tracks or twisted pair wiring to the load

should be used. Long leads to the load could radiate common

mode noise, typically above 20 MHz, back to the input power leads.

Conducted emissions should be checked at a system level.

If the unit fails level B at a frequency greater then 20MHz, because

of system wiring, an additional external ‘Y-capacitor’ could be con-

nected between input ground and output common, to locally

decouple common-mode noise. This capacitor type is usually

intended for use in interference suppression between line and earth.

A recommended capacitor is EVOX-RIFA PME271Y422M or equiva-

lent.

4. Telecom and Distributed Power Architecture

Features

Input Undervoltage Protection:

Internally, the BXA15 and BXA30 series contain an undervoltage

lockout zener circuit. The converter should not be operated continu-

ously at levels between the ‘maximum guaranteed-off-threshold’

and the ‘minimum guaranteed-on-threshold.’

Input Voltage

48 Volt

24 Volt

12 Volt

Nominal Input

Voltage

Recommended External Cap.

Nippon Chemi-Con SXE series120uF, 100V

ITW PAKTRON Capstick series part number

405K100CS4, 4uF @ 100V

ITW PAKTRON 405K100CS4

2 * ITW PAKTRON 405K100CS4

capacitors in close parallel.

Maximum Off

7.0

Voltage

Minimum On

Voltage

8.8

Related parts for BXA15

BXA15 Summary of contents

Page 1

... Safety and the Low Voltage Directive The BXA15 and BXA30 series is intended to be supplied only from a SELV (Safe Extra Low Voltage) circuit or a TNV (Telecommunications Network Voltage) power source which are insulated from the AC mains by reinforced insulation. Basic isolation, tested to 1,500VDC, for EN60950 and UL1950, is provided ...

Page 2

... As an example, for the BXA15 and BXA30 with the baseplate mounted vertically, in free natural convection: Rth B.P - AMB. = 6.5°/Watt. For a BXA15 and BXA30 with baseplate and heatsink mounted ver- tically, in free natural convection: Rth (B.P.+H.S.) - AMB. = 5.2°/Watt. For operation at output powers > 50% nominal max. and with input ...

Page 3

... During this surge the input voltage should remain above the minimum on threshold. IR Steady State Voltage Drop Consideration: Care must be taken with lead and connector resistances. The source voltage should be a minimum of 9 Volts + R (total, leads + connectors). PAGE 3 | BXA15 AND BXA30 SERIES ...

Page 4

Design Note Artesyn Technologies, 1999 The information and specifications contained in this design note are believed to be correct at time of publication. Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change ...

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