CDE-500 - Pascall Electronics, Ltd.

QUALITY UK TECHNOLOGY

500 WATT PM CONVERTER

SINGLE AND MULTI OUTPUT AC/DC & DC/DC

This series of switch-mode DC-DC and AC-DC power converters

provides the military electronics designer with a highly specified,

cost effective and space efficient solution for airborne, shipboard

and ground based applications.

These converters accept a wide input voltage range, conforming

with standard military 28V DC or 115V AC supplies and are

available in single and triple output configurations.

In order to satisfy military requirements the Powermite series has

been designed and tested in accordance with stringent NAVMAT

guidelines to provide exceptional electrical and environmental

performance.

Key Features

• Single, dual or triple outputs

• 18 - 32 Volts input (DC Model)

• 108 - 118 Volts input (AC Model)

• Active Power Factor Correction

• EMC Compatibility to

MIL-STD-461C

• High power density

• Operating temperature

-55˚C to +100˚C

• Low output noise

• Utilises surface

mount technology

• Remote ON/OFF

• External synchronisation facility

• High Efficiency (µ70%)

• Fixed switching frequency

• HI-REL versions available

• Designed to NAVMAT guidelines

• Semi - Custom options available

SERIES

DC Input AC Input Output Voltages and Currents Case Code

CDA-500 CAA-500 +5V 100.0A 5

CDE-500 CAE-500 +5V 50.0A ±12V 10.4A 5

CDF-500 CAF-500 +5V 50.0A ±15V 8.3A 5

Model Number

Output Options

Input Voltage:

DC Input Models: 18V to 32V.

AC Input Models: 108V to 118V single phase 400Hz.

Operation from 50/60Hz supplies can be accomodated by

means of an external capacitor. Please contact our sales

office for further details.

Input Power Characteristics:

DC Input: MIL-STD-704E, Transients as per Figure 9,

including voltage spikes specified in MIL-E-6051.

DEF STAN 61-5 Part 6 (A1, A2, B1, B2).

MIL-STD-1275A, excluding the single fault condition.

AC Input: MIL-STD-704E, Transients as per Figure 4,

including voltage spikes specified in MIL-E-6051.

BS3G100, excluding limit 1 of variable frequency and limit

2 of variable or constant frequency.

Power Factor (AC Models)

AC Models incorporate active Power Factor Correction

and achieve a power factor in excess of 0.95.

Isolation:

DC Models:

Input to Output >10MΩ@ 500VDC.

Input to Chassis >10MΩ@ 500VDC.

Outputs to Chassis >10MΩ@ 500VDC.

AC Models:

Input to Output >10MΩ@ 1KVDC.

Input to Chassis >10MΩ@ 1KVDC.

Outputs to Chassis >10MΩ@ 500VDC.

Efficiency:

Not less than 70% at full load, nominal input voltage and

at 25 C baseplate temperature.

Output Voltages:

See Output Rating Table for details. Other V/A

combinations are available. Contact sales team for fur ther

information.

Load, Line & Temperature Regulation

(CEB):

Prime Output ±2% of output voltage.

Auxiliary Outputs ±2% of output voltage.

Noise and Ripple(PARD):

Measured over bandwidth DC-20MHz Prime Output

±2% of output voltage.

Auxiliary Outputs ±2% of output voltage.

Total Effect Band (TEB):

Total combination of CEB + PARD + drift and warm-up.

Prime Output ±5% of output voltage.

Auxiliary Outputs ±5% of output voltage.

Cross Regulation:

Prime Output ±2% of output voltage.

Auxiliary Outputs ±2% of output voltage.

Dynamic Load Regulation:

Maximum transient over or undershoot of 5% of nominal

output voltage for a 50% step load change in 20µs.

Recovery within 1ms.

Dynamic Line Regulation:

Maximum transient over or undershoot of 5% of nominal

output voltage with recovery within 1ms for all line

transients and surges defined in Input Power

Characteristics above.

Minimum Load Conditions:

For full specified performance.

Prime Output 10% of maximum current.

Auxiliary outputs 10% of maximum current.

Output Protection:

Individual outputs are protected against indefinite

overload and short circuit. Current limiting circuitr y

operates at 110 - 130% of full rated current. Output

voltages recover automatically following removal of

overload.

Remote Sense:

Fitted as standard on the prime output only.

Output Overvoltage Protection:

All outputs are protected by means of zener diode clamps.

These limit the output voltage to 120%, typically, of the

nominal value.

Soft Start:

Under all conditions the converters start up in an or derly

fashion. Rise time of supplies is less than 10ms.

Synchronisation:

These modules can be synchronised to an external sour ce

or to other modules in the Powermite range.

(Synchronisation frequency = 400kHz ±5%).

PM SERIES Specification

Undervoltage Lockout:

To protect internal circuits against low input voltages, the

converters will not operate below an input of 13V dc.

Remote Shutdown:

Connecting the shutdown terminal to a voltage of (±0.4V)

with respect to the output return terminal, will cause the

unit to shutdown. Leaving the terminal open

circuit or connecting it to a logic high signal (3V to 5.5V)

will allow the unit to operate.

Hold Up:

Pins are provided which permit the connection of an

external hold-up capacitor.

EMI:

The units are designed to meet the following

requirements of MIL-STD-461C, Part 2, category A1b :-

CE01 CE03 CE07

CS01 CS02 CS06

RE02 RS02 RS03.

Operating Temperature:

Full specified performance with the baseplate temperatur e

maintained within the range -55˚C to +100˚C.

Storage Temperature:

-55˚C to +125˚C.

Cooling:

Conduction cooling via baseplate.

Humidity:

MIL-STD-810C, Method 507.3, 95% at

25˚C. BS3G100, Part 2, Section 3,

Sub-Section 3.2, Para 6.2.

Construction:

Fully enclosed construction utilising

Aluminium Alloy LM25M to BS1490. Paint

finish Matt Black to DTD 5555A.

Mounting surface Alochromate finish.

Weight and dimensions: The maximum weight is 2400

grams. Refer to outline drawing for unit dimensions and

fixing positions.

Vibration:

MIL-STD-810E, Method 514.4 Category 5.

BS3G100, Part 2, Section 3, Sub-Section

3.1, tests 4.3, 4.4.2 and 4.4.4.

Acceleration:

MIL-STD-810E, Method 513.4 Procedure

11. BS3G100, Part 2, Section 3, Sub-Section 3.6.

Shock:

MIL-STD-810E, Method 516.4 Procedure V. DEF-STAN-07-55

Part 2, Section 1.1 Test A2 (100g, 6ms, 3 shocks per axis).

Salt Mist:

BS3G100, Part 2, Section 3, Sub-Section 3.8.

Explosion Proofness:

BS3G100, Part 2, Section 3, Sub-Section 3.5.

Nuclear Hardening:

The circuitry of all Powermite converters is designed to

limit the effects of nuclear radiation.

Maintainability:

Units are constructed in a non-hermetically sealed two

part housing. Internal circuitry is protected by means of

conformal coating. All Powermite modules are repairable.

MTBF:

The MTBF for any unit in the Powermite range, calculated

in accordance with MIL-HDBK-217, can be provided upon

request.

HI-REL versions with active components screened to

JANTX, MIL-STD-883 or similar are available.

Shelf Life:

The shelf life of the units is ten years, they may be left in

deep store, without the need for intermittent powering-up

or any form of servicing for the period of the shelf life.

Burn In:

All units are subjected to an environmental stress

screening programme. For standard versions this consists

of a 48 hour bake at 85˚C baseplate temperature. High

reliability versions are subjected to 10 minutes of random

vibration followed by 48 hours of power and temperature

cycling between -55˚C and +85˚C, with full load applied.

Further Information

A detailed specification is available upon request.

Please contact our sales office.

PP 0998.PM500

Pin Out Details

Output Model

Function Pin No.

+Input 1

-Input 2

+Hold-Up 3

- Hold-Up 4

Chassis 5

- Remote Sense 6

+Remote Sense 7

Shutdown 8

Frequency Shift 9

Sync In 10

Sync Out 11

-Prime Output 12

+Prime Output 13

-Aux 1 14

+Aux 1 15

- Aux 2 16

+Aux 2 17

OTHER POWERMITE PRODUCTS

(See separate data sheets)

•

DC-DC Converters from 30 to 250 Watts

•

AC-DC Converters from 120 to 500 Watts

•

AC Front End -

Allows operation from 115V 400Hz supplies

•

Input Filter Module -

Provides compatibility with BS3G100, etc.

•

BITE Module -

Monitors input and output voltages

•

Circumvention Module -

Provides shutdown and crowbar facilities PM50094

OTHER PASCALL POWER PRODUCTS

•

Linear and Switch Mode Power Supplies from 30

Watts to 400 Watts U.L, C.S.A. and VDE Approvals

•

Telecommunication Power Supplies, UPS Systems

and Monitoring Systems.

•

Commercial Switch Mode Power Supplies and

DC/DC Converters from 10 Watts to 750 Watts.

•

Industrial Power Supplies and DC/DC Converters

from Telecom and Computer use from 20 Watts to

400 Watts.

•

DC/DC Converters for Industrial use from 3 Watts

to 300 Watts. 20 Watts Encapsulated Power

Supplies complete the range.

CONNECTORISED VERSIONS AVAILABLE

PP 0998.PM30

A compa ny within the Electronics

Division o fINTELEK plc.

Pascall Electronics Ltd

Westridge Business Park, Cothey Way,

Ryde, Isle of Wight PO33 1QT, UK

Tel:+44 (0)1983 817300

Fax:+44 (0)1983 564708

Internet:http://ww w.pascall.c o.uk

E-mail:power.sales@pascall.c o.uk

Represented by:

PASCALL’S QUALITY

SYSTEM

IS REGISTERED

UNDER BS EN ISO 9001

FM 13274

BS EN ISO 9001

Pascall rese rves the right to change the specifications of its products at a ny time without p rior

notic e.It is Pascall ’s policy to conti nually impr ove its products as n ew techniques and components

become available.

Further in formation on p ricing, deli very or technical issues m ay be obtained from the address bel ow:

LOOK TO THE FUTURE - LOOK TO PASCALL