NMS SERIES
6kVDC Isolated 2W Dual Output DC-DC Converters
SELECTION GUIDE
Nominal
Input
Voltage
Output
Voltage
Output
Current
Isolation
Capacitance
Efficiency
MTTF
1
Order Code
NMS0505
(V)
5
(V)
±5
(mA)
±200
(%)
74
(pF)
1.8
kHrs
747
NMS0509
5
±9
±111
76
1.9
327
NMS0512
5
±12
±83
77
2.0
169
FEATURES
s
BS EN 60950 Certified
s
UL 1950 Recognised
s
6kVDC Isolation
s
Dual Outputs
s
Low Profile Package
s
Efficiency to 80%
s
Power Density 0.48W/cm
3
s
5V & 12V Input
s
5V, 9V, 12V & 15V Output
s
Footprint 4.75cm
2
s
UL 94V-0 Package Material
s
No Heatsink required
s
Internal SMD Construction
s
Toroidal Magnetics
s
Fully Encapsulated
s
MTTF up to 1.0 Million Hours
s
PCB Mounting
s
Custom Solutions Available
DESCRIPTION
The NMS Series of DC-DC Converters are UL
1950 recognised and fully certified to BS EN
60950, this 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 suitable for applications in high
noise enviroments, eg heavy electrical
machine interface.
NMS1215
NMS1212
NMS1205
NMS0515
5
±15
±67
78
2.1
93
12
±5
±200
78
1.9
365
NMS1209
12
±9
±111
81
2.0
224
12
±12
±83
82
2.1
136
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
Continuous operation, 12V input types
4.5
10.8
5
12
5.5
13.2
V
OUTPUT CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Power
2
Voltage Set
Point Accuracy
Line Regulation
T
A
= 0°C to 70°C
See tolerance envelope
–7.5
1.0
10
6
6
6
2
10
1.2
15
15
15
15
200
W
%
%/%
%
mV p-p
High V
IN
to low V
IN
10% load to rated load, 5V output types
10% load to rated load, 9V output types
Load Regulation
10% load to rated load, 12V output types
10% load to rated load, 15V output types
Ripple & Noise BW=DC to 20MHz, all output types
ABSOLUTE MAXIMUM RATINGS
Short-circuit duration
3
Internal power dissipation
Lead temperature 1.5mm from case for 10 seconds
Input voltage V
IN
, NMS05 types
Input voltage V
IN
, NMS12 types
1 second
900mW
300°C
7V
15V
www.dc-dc.com
1 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2 See derating curve
3 Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
NMS SERIES
6kVDC Isolated 2W Dual Output DC-DC Converters
ISOLATION CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Isolation Test Voltage
Resistance
Flash tested for 1 second
Viso=500VDC
6000
10
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
All input types
35
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Specification
Storage
Case Temperature
Above Ambient
Cooling
All output types
All output types
Free air convection
0
-50
70
130
32
°C
°C
°C
PERFORMANCE CHARACTERISTICS
tolerance envelope
+10%
+5%
V nominal
4
+2.5%
–2.5%
–7.5%
2
1
0
3
temperature derating graph
70°C
Safe Operating Area
10
50
Output Load Current (%)
100
0
20
40
60
Ambient Temperature (°C)
80
MECHANICAL DIMENSIONS
24 Pin DIL
Weight: 7.5g
32.60 max
Pin Connections (Top View)
V
IN
GND
1
2
24
23
NC
NC
14.72
NMS0505
XYYWWi
–V
9.40±0.30
0.60 max
NC
0V
3.90
0.55
0.45
0.30
0.20
2.54
16.95
NC
+V
8
9
10
11
12
17
16
15
14
13
–V
NC
0V
NC
+V
2.16
15.24
All dimensions in mm XX.XX ±0.25mm. All pins on a 2.54mm pitch and within ±0.25mm of true position.
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 2001
NDC NMS.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.dc-dc.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: http://www.dc-dc.com
C&D Technologies (NCL), Inc.
5816 Creedmoor Road, Raleigh
NC 27612, USA
Tel: +1 (919) 571-9405
Fax: +1 (919) 571-9262
email: info@us.cdtechno-ncl.com
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