NDY2409 データシートの表示（PDF） - C AND D TECHNOLOGIES

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NDY2409

Isolated 3W Wide Input DC/DC Converters

C AND D TECHNOLOGIES 

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.

ENVIRONMENTAL

Parameter

Operation

Storage

Cooling

Conditions

Free air convection

NDY05 POWER DERATING CURVE

5

4

3

2

1

0

4.5 5

6

7

8

9

Input Voltage (V)

NDY SERIES

Isolated 3W Wide Input DC/DC Converters

CIN

10µF, 200V

Philips Part Number

151621809 or any

good low esr capacitor

Value

COUT

100µF, 25V

Philips Part Number

13556101 or any good

low esr capacitor

LOUT

C&D Technologies Part

No 24100

FILTER CIRCUIT 1

VIN

+VOUT

CIN

NDY

COUT

GND

OV

FILTER CIRCUIT 2 Recommended circuit for reduced ripple 3.3V O/P

VIN

LOUT

+VOUT

GND

CIN

NDY

COUT

OV

MIN TYP MAX Units

-40

85 °C

-50

130 °C

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

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

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