C&D Technologies (NCL) Ltd

Tanners Drive, Blakelands North

Milton Keynes MK14 5BU, England

Tel: +44 (0)1908 615232

Fax: +44 (0)1908 617545

email: info@cdtechno-ncl.com

www.cdpoweronline.com

C&D Technologies Inc.

3400 E Britannia Drive, Tucson,

Arizona 85706, USA

Tel: +1 (800) 547-2537

Fax: +1 (520) 741-4598

email: sales@cdtechno.com

C&D Technologies (NCL) Limited reserve the right to alter or improve the

specification, internal design or manufacturing process at any time, without

notice. Please check with your supplier or visit our web site to ensure that

you have the current and complete specification for your product before use.

© C&D Technologies (NCL) Limited 2003

NDC NDY.3

No part of this publication may be copied, transmitted or stored in a

retrieval system or reproduced in any way including, but not limited to,

photography, photocopy, magnetic or other recording means, without prior

written permission from C&D Technologies (NCL) Limited.

Instructions for use are available from www.cdpoweronline.com

NDY SERIES

Isolated 3W Wide Input DC/DC Converters

ENVIRONMENTAL

NDY05 POWER DERATING CURVE

Parameter

Conditions

MIN

TYP

MAX

Units

Operation

-40

85

°C

Storage

-50

130

°C

Cooling

Free air convection

5

4

3

2

1

0

4.5 5

6

78

9

Input Voltage (V)

FILTER CIRCUITS

EXTERNAL CAPACITANCE

Although these converters will work without

external capacitors, they are necessary in

order to guarantee the full parametric

performance over the full line and load

range. All parts have been tested and

characterised using the following values and

test circuit.

OUTPUT LOAD

The minimum rated load across the whole

input voltage range is 25% of the full load

output. It is important to take care that the

load does not fall below this as the output

ripple will greatly increase. While this

condition will not harm the device the

resultant increase in output ripple could cause

customers’ application to malfunction.

Value

10µF, 200V

Philips Part Number

151621809 or any

good low esr capacitor

100µF, 25V

Philips Part Number

13556101 or any good

low esr capacitor

C&D Technologies Part

No 24100

NDY

GND

OV

FILTER CIRCUIT 1

NDY

GND

OV