NDT CANDD [C&D Technologies], NDT Datasheet
NDT
Manufacturer Part Number
NDT
Description
Isolated 3W Wide Input Dual Output DC-DC Converters
Manufacturer
CANDD [C&D Technologies]
Datasheet
1.NDT.pdf
(2 pages)
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FEATURES
DESCRIPTION
The NDT series is a range of low profile DC-
DC converters offering dual outputs over a
2:1 input voltage range. All parts deliver 3W
output power up to 85°C without heatsinking.
A flyback oscillator design with isolated
feedback is used to give regulation over the
full operating range of 25% to 100% of full
load. It is strongly recommended that external
capacitors be used on input and output to
guarantee performance over full load and
input voltage range (see application notes for
guidance). The plastic case is rated to UL
94V-0 and encapsulant to UL 94V-1and the
connection pins are formed from a tin plated
alloy 42 leadframe.
www.dc-dc.com
Industry Standard Footprint
1kVDC Isolation
Dual Isolated Output
Short Circuit Protection
Low Profile 24 Pin Case
Efficiency to 81%
Power Density 0.90W/cm
2:1 Wide Input Range
24V & 48V Input
12V & 15V Output
Footprint 4.73cm
UL 94V-0 Package Materials
Operating Temperature Range
–40°C to 85°C
Load and Line Regulation
<1% on Both Outputs
No Heatsink Required
Internal SMD Construction
Fully Encapsulated
Custom Solutions Available
2
3
1 Specifications typical at T
3 A lower load is entirely safe but higher levels of output ripple will be experienced.
2 Measured at full load with external input/output capacitors, refer to test circuit.
4 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
SELECTION GUIDE
Order Code
NDTD2412
NDTD2415
NDTD4812
NDTD4815
INPUT CHARACTERISTICS
Parameter
Voltage Range
Reflected Ripple 24V input types with 10µF at input
Current
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Voltage Set
Point Accuracy
Line Regulation
Load Regulation with external input/output capacitors,
Ripple
Ripple & Noise With external input/output capacitors,
Cross
Regulation
ABSOLUTE MAXIMUM RATINGS
Short circuit protection over temperature range and input voltage range
Input Voltage, 24V types
Input Voltage, 48V types
Lead temperature 1.5mm from case for 10 seconds
Minimum Load
ISOLATION CHARACTERISTICS
Parameter
Isolation Test Voltage
Resistance
GENERAL CHARACTERISTICS
Parameter
Switching Frequency
ENVIRONMENTAL
Parameter
Operation
Storage
Case Temperature Above Ambient 100% Load
Isolated 3W Wide Input Dual Output DC-DC Converters
Nominal Rated
Voltage Voltage
Input
(V)
24
24
48
48
Conditions
24V input types
48V input types
48V input types with 10µF at input
Conditions
With external input/output capacitors,
refer to recommended test circuit
Low line to high line,
with external input/output capacitors,
refer to recommended test circuit
25% load to 100% load,
refer to recommended test circuit
BW = 20Hz to 300kHz
With external input/output capacitors,
refer to recommended test circuit
BW = DC to 20MHz
refer to recommended test circuit
% voltage change on negative output
when positive load varies from 12% to
50% with negative load fixed at 50%
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
1
1
Output
12
15
12
15
(V)
Conditions
Flash tested for 1 second
Viso=1KVDC
Conditions
100% load V
25% load V
1
Min Load
1
Conditions
(mA)
±31
±25
±31
±25
1
Output Current
1
IN
IN
nominal
nominal
3
Full Load
±125
±100
±125
±100
(mA)
Full Load
Current
MIN
MIN
18
36
Input
(mA)
156
155
1000
NDT SERIES
77
77
MIN
MIN
100
410
MIN
– 40
– 50
1
0.15
200
125
TYP
TYP
0.2
2.1
24
48
15
±1
90
125
500
TYP
TYP
TYP
28
(%)
79
80
81
81
continuous
40V
80V
300°C
25% of rated output
MAX
MAX
250
150
150
0.5
0.5
3.0
36
75
±5
30
MAX
MAX
MAX
150
590
130
3
85
(pF)
30
30
30
30
mV rms
mA p-p
mV p-p
Units
Units
Units
Units
Units
2045
MTTF
2075
2080
2090
VDC
VDC
G
kHz
kHrs
W
°C
°C
°C
%
%
%
%
4
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NDT Summary of contents
Page 1
... No Heatsink Required Internal SMD Construction Fully Encapsulated Custom Solutions Available DESCRIPTION The NDT series is a range of low profile DC- DC converters offering dual outputs over a 2:1 input voltage range. All parts deliver 3W output power up to 85°C without heatsinking. A flyback oscillator design with isolated ...
Page 2
... C&D Technologies (NCL) Ltd Tanners Drive, Blakelands North Milton Keynes MK14 5BU, England Tel: +44 (0)1908 615232 Fax:+44 (0)1908 617545 NDC NDT.1 email: info@cdtechno-ncl.com www: http://www.dc-dc.com PIN CONNECTIONS 24 Pin DIL (top view) – –V ...