The NDS Series of converters are low profile, single output, DC-DC
converters intended for SMT placement and reflow soldering. The
product provides onboard conversion of standard telecom, datacom,
and industrial input voltages to isolated low output voltages.
Proprietary patented manufacturing process ensures optimal quality
with full process automation. These are high performance, cost
effective converters with an extremely small PCB footprint.
RoHS-compliant for all six substances
Single board design
Basic insulation
1500 VDC i/o electric strength test voltage
Low profile SMT design
High current density
Low conducted and radiated EMI
Excellent co-planarity (within 0.1 mm)
Output overcurrent protection
Full output power at 70 °C and 1 m/s airflow
Operating temperature up to 100 °C
Remote shutdown (primary referenced)
Output voltage trim adjust, positive or negative
8.5 mm height profile
Safety-approved to IEC/EN 60950-1 and
Approved to the following Safety Standards: UL/CSA60950-1,
EN60950-1, and IEC60950-1
Distributed power architectures
Telecommunications equipment
LAN/WAN applications
Data processing
Industrial applications
2
NDS Series
INPUT
VOLTAGE
VDC
36 - 75
36 - 75
MODEL
NDS03ZE-M6G
NDS02ZG-M6G
INPUT
CURRENT, MAX
A
0.35
0.35
OUTPUT
VOLTAGE
V
3.3
5.0
OUTPUT
CURRENT
A
3.0
2.0
OUTPUT
RIPPLE/NOISE,
mV P-P
75
90
TYPICAL
EFFICIENCY
%
85
87
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long term reliability, and
cause permanent damage to the converter.
All specifications apply over input voltage, output load, and temperature range, unless otherwise noted.
PARAMETER
Input Voltage (Vi)
Transient Input Voltage (V
IT
)
Operating Case Temperature (T
C
)
Storage Temperature (T
S
)
ON/OFF Control Voltage (V
RC
)
Referenced to -Vi
CONDITIONS / DESCRIPTION
Continuous
Transient, 100 ms
At 100% load
MIN
36
NOM
MAX
75
100
UNITS
VDC
VDC
ºC
°C
V
-40
-55
-1.0
100
120
5.5
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
PARAMETER
Shock
Sinusoidal Vibration
Weight
Water Washing
MTBF
Standard process
Per Bellcore TR-NWT-000332
(100% load @25 °C, GB)
Yes
6 052 000
CONDITIONS / DESCRIPTION
IEC68-2-27
IEC68-2-6
MIN
NOM
MAX
100
10
10
UNITS
g
n
g
n
g
N/A
h
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted
PARAMETER
Insulation
Safety
Electric Strength Test Voltage
Rating
Insulation Capacitance (Cps)
Insulation
Resistance (Rps)
10
CONDITIONS / DESCRIPTION
Vi = 36 – 75 VDC
MIN
NOM
Basic
1500
4100
MAX
UNITS
N/A
VDC
pF
MΩ
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted
PARAMETER
Operating Input Voltage Range (Vi)
Input Current when Shutdown
Turn-On Input Voltage 36 – 75 Vi
CONDITIONS / DESCRIPTION
Continuous
Vi , Remote Control activated
Ramping Up, Io max
MIN
36
NOM
48
3
MAX
75
6
36
UNITS
V
mA
V
32
34
tech.support@psbel.com
NDS Series
Turn-Off Input Voltage 36 – 75 Vi
Ramping Down, Io max
To Output Regulation Band
Turn-On Time
After Remote Control
Rise Time
Vi, Io max
30
32
350
1
1
34
500
5
5
50
1.4
V
ms
ms
ms
3
Input Reflected Ripple Current
Input Capacitance
mApp
μF
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
PARAMETER
Shutdown Control
Converter OFF
Converter ON
Sink Current
Shutdown pin is pulled low
Voltage source or open circuit
Vi=Vi nom
-1.0
3.5
0.3
1.0
5.5
V
V
mA
CONDITIONS / DESCRIPTION
MIN
NOM
MAX
UNITS
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
PARAMETER
Output Voltage Set Point (Vo)
Output Current (Io)
Line Regulation
Load Regulation
Dynamic Regulation:
Peak Deviation
Settling Time
1
CONDITIONS / DESCRIPTION
Vi nom, Io = 1.5 A, 25 °C
Vi min to Vi max
Vi min to Vi max, 50% Io max
Vi nom, Io min to Io max
50-100% Io.Max load step
change
to 1% error band
MIN
3.26
0
NOM
3.3
MAX
3.34
3.0
65
65
UNITS
V
A
mV
mV
±250
250
50
75
2200
120
400
0.02
200
mV
μs
mVpp
μF
%Iomax
kHz
%Vo/°C
Vo
Output Ripple and Noise – 20 MHz bandwidth (Vr) Vi min to Vi max, Io min to Io max,
Admissible Load Capacitance (Co max)
Output Current Limit Threshold (IoL)
Switching Frequency (fs)
Temperature Coefficient (Tco)
Trim Range (Vt)
Io min to Io min, Vi min to Vi max
3.0
Io max, Vi nom
Vo
≤0.90
Vo nom
Vi nom, Io max
3.6
1
Measured with a 1
μF
ceramic across the output pins
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
17-Oct-2016
© 2016 Bel Power Solutions & Protection
BCD.00013_AD
4
NDS Series
TYPICAL CHARACTERISTIC CURVES
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
PARAMETER
Output Voltage Set Point (Vo)
Output Current (Io)
Line Regulation
Load Regulation
Dynamic Regulation:
Peak Deviation
Settling Time
CONDITIONS / DESCRIPTION
Vi nom, Io = 1.5 A, 25 °C
Vi min to Vi max
Vi min to Vi max, 50% Io max
Vi nom, Io min to Io max
50-100% Io.Max load step
change
to 1% error band
MIN
4.94
0
NOM
5.0
MAX
5.06
2.0
65
65
UNITS
V
A
mV
mV
±350
250
75
125
2200
120
400
0.02
200
mV
μs
mVpp
μF
%Iomax
kHz
%Vo/°C
Vo
Output Ripple and Noise – 20 MHz bandwidth
2
(Vr) Vi min to Vi max, Io min to Io max,
Admissible Load Capacitance (Co max)
Output Current Limit Threshold (IoL)
Switching Frequency (fs)
Temperature Coefficient (Tco)
Trim Range (Vt)
Io min to Io min, Vi min to Vi max
4.5
Io max, Vi nom
Vo
≤0.90
Vo nom
Vi nom, Io max
5.5
2
Measured with a 1
μF
ceramic across the output pins
tech.support@psbel.com
NDS Series
TYPICAL CHARACTERISTIC CURVES
5
This series of converters does not require any external components for proper operation. However, if the distribution of the input
voltage to the converter contains significant inductance, a capacitor across the input terminals may be required to stabilize the
input voltage. A minimum of 1
μF,
quality electrolytic / ceramic capacitor is recommended for this purpose. For output decouplingit
is recommend connecting a 1
μF
ceramic capacitor directly across the output pins of the converter.
8.1
The remote control pin functions as a normal soft shutdown. It is referenced to the –Vi pin. With positive logic, when the
remote control pin is pulled low, the output is turned off and the unit goes into a very low input power mode. An open
collector switch is recommended to control the voltage between the remote control pin and the –Vi pin of the converter.
The remote control pin is pulled up internally, so no external voltage source is required. The user should avoid connecting
a resistor between the remote control pin and the +Vi pin. The user must take care to ensure that the pin reference for the
control is connected close to the –Vi pin. The control signal must not be referenced ahead of EMI filtering, or remotely from
the unit. If the remote control pin is not used, it can be left floating.
8.2
The converter is designed for natural or forced convection cooling. The output power of the converter is limited by the
maximum case temperature (Tc). To ensure reliable long term operation of the converters, and to comply with safety
agency requirements,
Bel Power Solutions limits max. allowable case temperature (Tc) to 100 °C;
see Mech. Drawing.
8.3
Paralleling of two converters is not possible.
8.4
When the output is overloaded above the maximum output current rating, the voltage will start to reduce to maintain the
output power to a safe level. In a condition of high overload or short-circuit, where the output voltage is pulled below
approximately 30% of Vo.Nom, the unit will enter a ‘Hiccup’ mode of operation. Under this condition the unit will attempt
to restart, approximately every 25 ms, until the overload has cleared.
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
17-Oct-2016
© 2016 Bel Power Solutions & Protection
BCD.00013_AD
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