NMS0509C - C&D Technologies, Inc.

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NMS SERIES

6kVDC Isolated 2W Dual Output DC/DC Converters

KDC_NMSC.5 Page 1 of 3

SELECTION GUIDE

Order Code

Nominal Input

Voltage

Output

Voltage Output Current Efﬁciency Isolation

Capacitance MTTF1

(V) (V) (mA) % pF kHrs

NMS0505C 5 ±5 ±200 74 1.8 747

NMS0509C 5 ±9 ±111 76 1.9 327

NMS0512C 5 ±12 ±83 77 2.0 169

NMS0515C 5 ±15 ±67 78 2.1 93

NMS1205C 12 ±5 ±200 78 1.9 365

NMS1209C 12 ±9 ±111 81 2.0 224

NMS1212C 12 ±12 ±83 82 2.1 136

NMS1215C 12 ±15 ±67 82 2.2 82

When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external

capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the

additional external capacitance for reliable start up.

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range Continuous operation, 5V input types 4.5 5 5.5 V

Continuous operation, 12V input types 10.8 12 13.2

OUTPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Rated Power2TA=0°C to 70°C 2 W

Voltage Set Point Accuracy See tolerance envelope -7.5 10 %

Line regulation High VIN to low VIN 1.0 1.2 %/%

Load Regulation

10% load to rated load, 5V output types 10 15

10% load to rated load, 9V output types 6 15

10% load to rated load, 12V output types 6 15

10% load to rated load, 15V output types 6 15

Ripple and Noise BW=DC to 20MHz, all output types 200 mV p-p

ISOLATION CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Isolation test voltage Flash tested for 1 second 6000 VDC

Resistance Viso= 500VDC 10 GΩ

GENERAL CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Switching frequency All input types 35 kHz

ABSOLUTE MAXIMUM RATINGS

Short-circuit protection31 second

Lead temperature 1.5mm from case for 10 seconds 300°C

Internal power dissipation 900mW

Input voltage VIN, NMS05 types 7V

Input voltage VIN, NMS12 types 15V

1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.

2. See derating graph.

3. Supply voltage must be disconnected at the end of the short circuit duration.

All speciﬁcations typical at TA=25°C, nominal input voltage and rated output current unless otherwise speciﬁed.

FEATURES

nRoHS compliant

nUL1950 recognized

nEfﬁciency to 82%

nPower density up to 0.44W/cm3

nDual outputs

nLow proﬁle package

nUL 94V-0 package material

nNo heatsink required

nFootprint 4.75cm2

n6kVDC isolation

n5V & 12V input

n5V, 9V, 12V and 15V output

nInternal SMD construction

nFully encapsulated with toroidal magnetics

nMTTF up to 747 kHrs

nPCB mounting

DESCRIPTION

The NMS series of DC/DC converters are UL1950

recognized which makes them ideal for all

telecom and safety applications where approved

isolation is required. The low proﬁle package

allows mounting in rack systems without risk of

touching other boards. The output conﬁguration

allows all of the rated power to be drawn from a

single pin provided the total load does not exceed

2 watts. The devices feature low noise and low

isolation capacitance suiltable for applications

in high noise environments, e.g. heavy electrical

machine interface.

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NMS SERIES

6kVDC Isolated 2W Dual Output DC/DC Converters

KDC_NMSC.5 Page 2 of 3

TEMPERATURE DERATING GRAPH

TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Speciﬁcation All output types 0 70

°C

Storage -50 130

Case Temperature above ambient All output types 32

Cooling Free air convection

8060

4020

1.0

2.0

3.0

Safe Operating Area

70°C

Ambient Temperature (°C)

Output Power (W)

TOLERANCE ENVELOPE

+10%

Output Load Current (%)

Output Voltage

+5%

-7.5%

-2.5%

+2.5%

Typical Load Line

VNOM

100

TECHNICAL NOTES

ISOLATION VOLTAGE

‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test

voltage, applied for a speciﬁed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.

C&D Technologies NMS series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 6kVDC for 1 second.

A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”

The NMS series has been recognized by Underwiters Laboratory to a working voltage of 300Vrms for Supplementary Insulation system and 150Vrms for Reinforced

Insulation systems.

REPEATED HIGH-VOLTAGE ISOLATION TESTING

It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on

materials, construction and environment. The NMS series have toroidal isolation transformers, with an additional insulation system between the enameled wire primary

and secondary windings. While manufactured parts can withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any

material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the

number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be

reduced by 20% from speciﬁed test voltage.

www.cd4power.com

NMS SERIES

6kVDC Isolated 2W Dual Output DC/DC Converters

KDC_NMSC.5 Page 3 of 3

PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS

Pin Function

1 +VIN

2 -VIN

8 -VOUT

9 NC

10 OV

11 NC

12 +VOUT

13 +VOUT

14 NC

15 OV

16 NC

17 -VOUT

23 NC

24 NC

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All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. Weight: 7.5g

Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.

Tube length : 20.47±0.079 (520mm ±2mm). Tube Quantity : 15

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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.

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.cd4power.com

RoHS COMPLIANCE INFORMATION

This series is compatible with RoHS

soldering systems with a peak wave solder

temperature of 300ºC for 10 seconds. The

pin termination ﬁnish on this product series

is Matte Tin over Nickel Preplate. The series

is backward compatible with Sn/Pb soldering

systems.

For further information, please visit www.cd4power.com/rohs

C&D Technologies (NCL) Ltd

Tanners Drive, Blakelands North

Milton Keynes MK14 5BU, UK

Tel: +44 (0)1908 615232

Fax: +44 (0)1908 617545

email: mk@cdtechno.com

Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.

C&D Technologies, Inc.

11 Cabot Boulevard, Mansﬁeld,

MA 02048-1151, USA

Tel: +1 (508) 339-3000

Fax: +1 (800) 233-2765

email: sales@cdtechno.com