NMS Series

6kVDC Isolated 2W Dual Output DC-DC Converters

KDC_NMS.K01 Page 1 of 4

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SELECTION GUIDE

Order Code

Nominal

Input

Voltage

Output

Voltage

Output

Current

Efficiency

Isolation

Capacitance

MTTF1

Recommended

Alternative

V

V

mA

%

pF

kHrs

NMS0505C

5

±5

±200

74

1.8

747

MEJ2D0505SC

NMS1205C

12

±5

±200

78

1.9

365

MEJ2D1205SC

NMS0509C

5

±9

±111

76

1.9

327

MEJ2D0509SC

NMS0512C

5

±12

±83

77

2.0

169

MEJ2D0512SC

NMS0515C

5

±15

±67

78

2.1

93

MEJ2D0515SC

NMS1209C

12

±9

±111

81

2.0

224

MEJ2D1209SC

NMS1212C

12

±12

±83

82

2.1

136

MEJ2D1212SC

NMS1215C

12

±15

±67

82

2.2

82

MEJ2D1215SC

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 Power2

TA=0

°C to 70°C

2W

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

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

2. See derating graph.

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

FEATURES

RoHS compliant

UL1950 recognised

Efficiency to 82%

Power density up to 0.44W/cm3

Dual outputs

Low profile package

UL 94V-0 package material

No heatsink required

Footprint 4.75cm2

6kVDC isolation

5V & 12V inputs

5V output

Internal SMD construction

Fully encapsulated with toroidal magnetics

MTTF up to 747 kHrs

PCB mounting

DESCRIPTION

The NMS series of DC-DC converters are UL1950

recognised 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.

GENERAL CHARACTERISTICS

Parameter

Conditions

Min.

Typ.

Max.

Units

Switching frequency

All input types

35

kHz

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