GE
Data Sheet
September 3, 2020
©2014 General Electric Company. All rights reserved.
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
Features
▪ Compliant to RoHS Directive 2011/65/EU and amended
Directive (EU) 2015/863
▪ Compliant to REACH Directive (EC) No 1907/2006
▪ Compatible in a Pb-free or SnPb wave-soldering
environment (Z versions)
▪ Wide Input voltage range (3Vdc-14Vdc)
▪ Output voltage programmable from 0.6 Vdc to 5.5Vdc via
external resistor
▪ Tunable LoopTM to optimize dynamic output voltage
response
▪ Fixed switching frequency
▪ Output overcurrent protection (non-latching)
▪ Over temperature protection
▪ Remote On/Off
▪ Small size: 10.4 mm x 13.5 mm x 8.1 mm
(0.41 in x 0.53 in x 0.32 in)
▪ Wide operating temperature range (-40°C to 85°C)
▪ ANSI/UL* 62368-1 and CAN/CSA† C22.2 No. 62368-1
Recognized, DIN VDE‡ 0868-1/A11:2017 (EN62368-
1:2014/A11:201)
▪ ISO** 9001 and ISO 14001 certified manufacturing
facilities
Description
The NQR002A0X4 SIP power modules are non-isolated dc-dc converters in an industry standard package that can deliver up to 2A of
output current with a full load efficiency of 93% at 5.0Vdc output voltage (VIN = 12Vdc). These modules operate over a wide range
of input voltage (VIN = 3Vdc-14Vdc) and provide a precisely regulated output voltage from 0.6Vdc to 5.5Vdc, programmable via an
external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection. A new
feature, the Tunable LoopTM, allows the user to optimize the dynamic response of the converter to match the load.
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association.
‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
MODULE
VOUT
GND
TRIM
RTUNE
CTUNE
RTrim
VIN
CO1
+
CI2
CI1
Vin+
Vout+
ON/OFF
Q3
MODULE
RoHS Compliant
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 2
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only,
functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of
the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Parameter
Device
Symbol
Min
Max
Unit
Input Voltage
All
VIN
-0.3
15
Vdc
Continuous
Operating Ambient Temperature
All
TA
-40
85
°C
(see Thermal Considerations section)
Storage Temperature
All
Tstg
-55
125
°C
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
All
VIN
3
12
14
Vdc
Maximum Input Current
All
IIN,max
2.0
Adc
(VIN=3V to 14V, IO=IO, max )
Input No Load Current
(VIN = 9Vdc, IO = 0, module enabled)
VO,set = 0.6 Vdc
IIN,No load
20
mA
(VIN = 12Vdc, IO = 0, module enabled)
VO,set = 5.0Vdc
IIN,No load
48
mA
Input Stand-by Current
All
IIN,stand-by
1.5
mA
(VIN = 12Vdc, module disabled)
Inrush Transient
All
I2t
1
A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN =0
to 14V, IO= IOmax ; See Test Configurations)
All
20
mAp-p
Input Ripple Rejection (120Hz)
All
-65
dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of
sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety
and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 4A (see
Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current,
the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information.
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 3
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point (with 0.5% tolerance for
external resistor used to set output voltage)
All
VO, set
-1.5
+1.5
% VO, set
Output Voltage
All
VO, set
-3.0
⎯
+3.0
% VO, set
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range
All
VO
0.6
5.5
Vdc
Selected by an external resistor
Output Regulation (for Vo 2.5Vdc)
Line (VIN=VIN, min to VIN, max)
All
-0.4
⎯
+0.4
% VO, set
Load (IO=IO, min to IO, max)
All
⎯
0.8
% VO, set
Output Regulation (for Vo <2.5Vdc)
Line (VIN=VIN, min to VIN, max)
All
-10
⎯
+10
mV
Load (IO=IO, min to IO, max)
All
⎯
20
mV
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max Cout = 22μF)
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
⎯
50
100
mVpk-pk
RMS (5Hz to 20MHz bandwidth)
All
⎯
20
38
mVrms
External Capacitance1
Without the Tunable LoopTM
ESR ≥ 1 mΩ
All
CO, max
22
⎯
47
μF
With the Tunable LoopTM
ESR ≥ 0.15 mΩ
All
CO, max
0
⎯
1000
μF
ESR ≥ 10 mΩ
All
CO, max
0
⎯
3000
μF
Output Current
All
Io
0
2
Adc
Output Current Limit Inception (Hiccup Mode )
All
IO, lim
180
% Io,max
Output Short-Circuit Current
All
IO, s/c
140
mArms
(VO≤250mV) ( Hiccup Mode )
Efficiency (VIN= 6Vdc)
VO,set = 0.6Vdc
η
69.2
%
VIN= 12Vdc, TA=25°C
VO, set = 1.2Vdc
η
80.4
%
IO=IO, max , VO= VO,set
VO,set = 1.8Vdc
η
85.5
%
VO,set = 2.5Vdc
η
88.9
%
VO,set = 3.3Vdc
η
91
%
VO,set = 5.0Vdc
η
93.3
%
Switching Frequency
All
fsw
⎯
600
⎯
kHz
1
External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as getting the best
transient response. See the Tunable LoopTM section for details.
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 4
General Specifications
Parameter
Min
Typ
Max
Unit
Calculated MTBF (VIN=12V, VO=5Vdc, IO=0.8IO, max, TA=40°C) Per
Telcordia SR-332 Issue3: Method 1, Case 3
138,941,752
Hours
Weight
⎯
1.2 (0.042)
⎯
g (oz.)
General Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.
Parameter
Device
Symbol
Min
Typ
Max
Unit
On/Off Signal interface
(VIN=VIN, min to VIN, max; Open collector or equivalent
signal referenced to GND)
Logic High (Enable pin open - Module ON)
Input High Current
All
IIH
―
1
mA
Input High Voltage
All
VIH
3.0
―
VIN, max
V
Logic Low (Module Off)
Input Low Current
All
IIL
―
―
10
A
Input Low Voltage
All
VIL
-0.3
―
0.3
V
Turn-On Delay and Rise Times
(IO=IO, max , VIN = VIN, nom, Vo to within ±1% of steady state)
Case 1: Enable input is enabled and then
input power is applied (delay from instant at which
VIN =VIN, min until Vo=10% of Vo,set)
All
Tdelay
5
msec
Case 2: Input power is applied for at least one second
and then Enable input is set enabled (delay from
instant at which Enable is enabled until Vo=10% of Vo,
set)
All
Tdelay
5.2
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
All
Trise
1.4
msec
Output voltage overshoot
3.0
% VO, set
IO= IO, max; VIN = VIN, min to VIN, max, TA = 25 oC
Overtemperature Protection
All
Tref
117
ºC
Input Undervoltage Lockout
Turn-on Threshold
All
2.95
Vdc
Turn-off Threshold
All
2.8
Vdc
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 5
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (0.6V, 2A) at 25oC
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 1. Converter Efficiency versus Output Current.
Figure 2. Derating Output Current versus Ambient Temperature and
Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
………IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 3. Typical output ripple and noise (VIN = 12V, Io = Io,max).
Figure 4. Transient Response to Dynamic Load Change from 0% to
50% to 0% .
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (200mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (200mV/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext= 22uF).
Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Cext=
22uF ,Io = Io,max).
30
40
50
60
70
80
90
0 0.5 1 1.5 2
Vin = 3V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 6
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (1.2V, 2A) at 25oC
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 7. Converter Efficiency versus Output Current.
Figure 8. Derating Output Current versus Ambient Temperature
and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max).
Figure 10. Transient Response to Dynamic Load Change from 0% to
50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (500mV/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext= 22uF).
Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Cext=
22uF, Io = Io,max).
40
50
60
70
80
90
100
0 0.5 1 1.5 2
Vin = 3V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 7
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (1.8V, 2A) at 25oC.
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 13. Converter Efficiency versus Output Current.
Figure 14. Derating Output Current versus Ambient Temperature
and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max).
Figure 16. Transient Response to Dynamic Load Change from 0% to
50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO(V) (500mV/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext=22uF,).
Figure 18. Typical Start-up Using Input Voltage (VIN = 12V,
Cext=22uF, Io = Io,max).
40
50
60
70
80
90
100
0 0.5 1 1.5 2
Vin = 3V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 8
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (2.5V, 2A) at 25oC.
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 19. Converter Efficiency versus Output Current.
Figure 20. Derating Output Current versus Ambient Temperature
and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max).
Figure 22. Transient Response to Dynamic Load Change from 0% to
50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (1V/div) VON/PFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (1V/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext= 22uF ).
Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Cext=
22uF, Io = Io,max).
40
50
60
70
80
90
100
0 0.5 1 1.5 2
Vin = 3V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 9
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (3.3V, 2A) at 25oC.
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 25. Converter Efficiency versus Output Current.
Figure 26. Derating Output Current versus Ambient Temperature
and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 27. Typical output ripple and noise (VIN = 12V, Io =
Io,max).
Figure 28. Transient Response to Dynamic Load Change from 0% to
50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (1V/div) VON?OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (1V/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext= 22uF)
Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Cext=
22uF, Io = Io,max).
60
65
70
75
80
85
90
95
100
0 0.5 1 1.5 2
Vin = 4.5V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 10
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (5V, 2A) at 25oC.
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 31. Converter Efficiency versus Output Current.
Figure 32. Derating Output Current versus Ambient Temperature
and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1Adiv) VO (V) (100mV/div)
TIME, t (2s/div)
TIME, t (500s /div)
Figure 33. Typical output ripple and noise (VIN = 12V, Io =
Io,max).
Figure 34. Transient Response to Dynamic Load Change from 0% to
50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (2V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
Vo (V) (2V/div) VIN (V) (5V/div)
TIME, t (5ms/div)
TIME, t (5ms/div)
Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max,
Vin=12V,Cext= 22uF).
Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io =
Io,max, Cext= 22uF).
70
75
80
85
90
95
100
0 0.5 1 1.5 2
Vin = 6.5V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 11
Test Configurations
TO OSCILLOSCOPE
CURRENT PROBE
LTEST
1μH
BATTERY
CS 1000μF
Electrolytic
E.S.R.<0.1
@ 20°C 100kHz
2x100μF
Tantalum
VIN(+)
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
CIN
Figure 1. Input Reflected Ripple Current Test Setup.
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
V
O
(+)
COM
1uF
.
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Figure 2. Output Ripple and Noise Test Setup.
VO
COM
VIN(+)
COM
RLOAD
Rcontact
Rdistribution
Rcontact
Rdistribution
Rcontact
Rcontact
Rdistribution
Rdistribution
VIN
VO
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 3. Output Voltage and Efficiency Test Setup.
=
VO.
IO
VIN.
IIN
x
100
%
Efficiency
Design Considerations
Input Filtering
The NQR002A0X4 2A module should be connected to a low ac-
impedance source. A highly inductive source can affect the
stability of the module. An input capacitance must be placed
directly adjacent to the input pin of the module, to minimize
input ripple voltage and ensure module stability.
To minimize input voltage ripple, low-ESR ceramic or polymer
capacitors are recommended at the input of the module. Figure 4
shows the input ripple voltage for various output voltages at 2A
of load current with 1x10 µF or 1x22 µF ceramic capacitors and
an input of 12V.
Input Ripple Voltage (mVp-p)
Output Voltage (Vdc)
Figure 4. Input ripple voltage for various output voltages with
1x10 µF or 1x22 µF ceramic capacitors at the input (2A load).
Input voltage is 12V.
Output Filtering
The NQR002A0X4 2A modules are designed for low output ripple
voltage and will meet the maximum output ripple specification
with no external capacitors. However, additional output filtering
may be required by the system designer for a number of reasons.
First, there may be a need to further reduce the output ripple
and noise of the module. Second, the dynamic response
characteristics may need to be customized to a particular load
step change.
To reduce the output ripple and improve the dynamic response
to a step load change, additional capacitance at the output can
be used. Low ESR ceramic and polymer are recommended to
improve the dynamic response of the module. Figure 5 provides
output ripple information for different external capacitance
values at various Vo and for a load current of 2A. For stable
operation of the module, limit the capacitance to less than the
maximum output capacitance as specified in the electrical
specification table. Optimal performance of the module can be
achieved by using the Tunable LoopTM feature described later in
this data sheet.
20
30
40
50
60
70
80
90
100
110
120
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
1x10uF
1x22uF
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 12
Figure 5. Output ripple voltage for various output voltages with
external 1x22 µF, 2x22 µF ceramic capacitors at the output (2A
load). Input voltage is 12V.
Safety Considerations
For safety agency approval the power module must be installed
in compliance with the spacing and separation requirements of
the end-use safety agency standards, i.e., UL ANSI/UL* 62368-1
and CAN/CSA+ C22.2 No. 62368-1 Recognized, DIN VDE 0868-
1/A11:2017 (EN62368-1:2014/A11:2017).
For the converter output to be considered meeting the
Requirements of safety extra-low voltage (SELV) or ES1, the input
must meet SELV/ES1 requirements. The power module has
extra-low voltage (ELV) outputs when all inputs are ELV.
An input fuse for the module is recommended. Due to the wide
input voltage and output voltage ranges of the module, a 4A,
125Vdc fast acting fuse is recommended
Feature Descriptions
Enable (Remote On/Off)
The NQR002A0X4 2A power modules feature a Enable pin with
positive logic for remote On/Off operation. If the Enable pin is
not being used, leave the pin open (the module will be ON). The
Enable signal (VOn/Off) is referenced to ground. During a Logic High
on the Enable pin, the module remains ON. During Logic-Low,
the module is turned OFF.
Figure 6. Remote On/Off Implementation(positive logic).
Overcurrent Protection
To provide protection in a fault (output overload) condition, the
unit is equipped with internal current-limiting circuitry and can
endure current limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. The unit operates
normally once the output current is brought back into its
specified range. The average output current during hiccup is 10%
IO, max.
Overtemperature Protection
To provide protection in a fault condition, these modules are
equipped with a thermal shutdown circuit. The unit will shut
down if the overtemperature threshold of 130ºC is exceeded at
the thermal reference point Tref. The thermal shutdown is not
intended as a guarantee that the unit will survive temperatures
beyond its rating. Once the unit goes into thermal shutdown it
will then wait to cool before attempting to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit, the
module operation is disabled. The module will begin to operate
at an input voltage above the undervoltage lockout turn-on
threshold.
Output Voltage Programming
The output voltage of the NQR002A0X4 2A module can be
programmed to any voltage from 0.6dc to 5.5Vdc by connecting
a resistor between the Trim+ and GND pins of the module.
Certain restrictions apply on the output voltage set point
depending on the input voltage. These are shown in the Output
Voltage vs. Input Voltage Set Point Area plot in Fig. 7. The Lower
8
10
12
14
16
18
20
0.5 1.5 2.5 3.5 4.5
Ripple(mVp-p)
Output Voltage(Volts)
1x22uF External Cap
2x22uF External Cap
Q1
VIN+
GND
+
PWM Enable
ON/OFF
V
ON/OFF
_
MODULE
I
Rpullup
ON/OFF
10K
Q2
10K
20K
20K
Q3
10K
10K
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 13
Limit curve shows that for output voltages of 2.4V and higher,
the input voltage needs to be larger than the minimum of 3V.
Feature Descriptions (continued)
Figure 7. Output Voltage vs. Input Voltage Set Point Area plot
showing limits where the output voltage can be set for different
input voltages.
Without an external resistor between Trim+ and GND pins, the
output of the module will be 0.6Vdc. To calculate the value of
the trim resistor, Rtrim for a desired output voltage, use the
following equation:
( )
−
=k
Vo
Rtrim 6.0
12
Rtrim is the external resistor in kΩ
Vo is the desired output voltage
Table 1 provides Rtrim values required for some common output
voltages.
Table 1
VO, set (V)
Rtrim (KΩ)
0.6
Open
0.9
40
1.0
30
1.2
20
1.5
13.33
1.8
10
2.5
6.316
3.3
4.444
5.0
2.727
By using a ±0.5% tolerance trim resistor with a TC of ±25ppm, a
set point tolerance of ±1.5% can be achieved as specified in the
electrical specification. The POL Programming Tool available at
www.lineagepower.com under the Design Tools section, helps
determine the required trim resistor needed for a specific output
voltage.
V
O
(+)
TRIM
GND
R
trim
LOAD
V
IN
(+)
ON/OFF
Vout
Figure 8. Circuit configuration for programming output voltage
using an external resistor.
Voltage Margining
Output voltage margining can be implemented in the
NQR002A0X4 2A modules by connecting a resistor, Rmargin-up,
from the Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, Rmargin-down, from the Trim
pin to output pin for margining-down. Figure 9 shows the circuit
configuration for output voltage margining. The POL
Programming Tool, available at www.lineagepower.com under
the Design Tools section, also calculates the values of Rmargin-up
and Rmargin-down for a specific output voltage and % margin. Please
consult your local Lineage Power Field Application Engineer or
Account Manager for additional details.
0
2
4
6
8
10
12
14
16
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Output Voltage (V)
Input Voltage (v)
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 14
Feature Descriptions (continued)
Figure 9. Circuit Configuration for margining Output voltage.
Monotonic Start-up and Shutdown
The NQR002A0X4 2A modules have monotonic start-up and
shutdown behavior for any combination of rated input voltage,
output current and operating temperature range.
Tunable LoopTM
The NQR002A0X4 2A modules have a new feature that optimizes
transient response of the module called Tunable LoopTM.
External capacitors are usually added to improve output voltage
transient response due to load current changes. Sensitive loads
may also require additional output capacitance to reduce output
ripple and noise. Adding external capacitance however affects
the voltage control loop of the module, typically causing the loop
to slow down with sluggish response. Larger values of external
capacitance could also cause the module to become unstable.
To use the additional external capacitors in an optimal manner,
the Tunable LoopTM feature allows the loop to be tuned
externally by connecting a series R-C between the VOUT and
TRIM pins of the module, as shown in Fig. 10. This R-C allows the
user to externally adjust the voltage loop feedback compensation
of the module to match the filter network connected to the
output of the module.
Recommended values of RTUNE and CTUNE are given in Tables 2 and
3. Table 2 lists recommended values of RTUNE and CTUNE in order
to meet 2% output voltage deviation limits for some common
output voltages in the presence of a 1A to 2A step change (50%
of full load), with an input voltage of 12V. Table 3 shows the
recommended values of RTUNE and CTUNE for different values of
ceramic output capacitors up to TBD, again for an input voltage
of 12V. The value of RTUNE should never be lower than the values
shown in Tables 3 and 4. Please contact your Lineage Power
technical representative to obtain more details of this feature as
well as for guidelines on how to select the right value of external
R-C to tune the module for best transient performance and
stable operation for other output capacitance values.
Figure. 10. Circuit diagram showing connection of RTUME and
CTUNE to tune the control loop of the module.
Table 2. Recommended values of RTUNE and CTUNE to obtain
transient deviation of 2% of Vout for a 1A step load with
Vin=12V.
Co
1x47F
2x47F
3x47F
4x47F
10x47F
RTUNE
220
150
100
100
100
CTUNE
3900pF
10nF
18nF
18nF
22nF
Table 3. General recommended values of of RTUNE and CTUNE for
Vin=12V and various external ceramic capacitor combinations.
Vo
5V
3.3V
2.5V
1.8V
1.2V
0.6V
Co
1x22F
1x47F
2x47F
2x47F
3x47F
330F
Polymer
RTUNE
220
220
150
150
100
100
CTUNE
2200pF
3900pF
10nF
10nF
18nF
68nF
V
81mV
61mV
35mV
34mV
23mV
12mV
Table 4. Recommended values of RTUNE and CTUNE to obtain
transient deviation of 2% of Vout for a 1A step load with
Vin=5V
Vo
3.3V
2.5V
1.8V
1.2V
0.6V
Co
1x47F
2x47F
2x47F
3x47F
330F
Polymer
RTUNE
220
150
150
100
100
CTUNE
3900pF
10nF
10nF
18nF
68nF
V
62mV
35mV
34mV
23mV
12mV
Vo
MODULE
GND
Trim
Q1
Rtrim
Rmargin-up
Q2
Rmargin-down
MODULE
TRIM
VOUT
GND
RTUNE
CTUNE
RTrim
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 15
Table 5. Recommended values of RTUNE and CTUNE to obtain
transient deviation of 2% of Vout for a 1A step load with
Vin=3.3V
Vo
2.5V
1.8V
1.2V
0.6V
Co
3x47F
2x47F
3x47F
330F
Polymer
RTUNE
100
150
100
100
CTUNE
18nF
10nF
18nF
68nF
V
48mV
34mV
23mV
12mV
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 16
Thermal Considerations
Power modules operate in a variety of thermal environments;
however, sufficient cooling should be provided to help ensure
reliable operation.
Considerations include ambient temperature, airflow, module
power dissipation, and the need for increased reliability. A
reduction in the operating temperature of the module will result
in an increase in reliability. The thermal data presented here is
based on physical measurements taken in a wind tunnel. The
test set-up is shown in Figure 11. The preferred airflow direction
for the module is in Figure 12.
Figure 11. Thermal Test Set-up.
The thermal reference point, Tref used in the specifications of
thermal derating curves is shown in Figure 12. For reliable
operation this temperature should not exceed 120oC.
The output power of the module should not exceed the rated
power of the module (Vo,set x Io,max).
Please refer to the Application Note “Thermal Characterization
Process For Open-Frame Board-Mounted Power Modules” for a
detailed discussion of thermal aspects including maximum
device temperatures.
Figure 12. Tref Temperature measurement location.
Post solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly
process prior to electrical board testing. The result of inadequate
cleaning and drying can affect both the reliability of a power
module and the testability of the finished circuit-board assembly.
For guidance on appropriate soldering, cleaning and drying
procedures, refer to Board Mounted Power Modules: Soldering
and Cleaning Application Note.
Through-Hole Lead-Free Soldering Information
These RoHS-compliant through-hole products use the SAC
(Sn/Ag/Cu) Pb-free solder and RoHS-compliant components.
They are designed to be processed through single or dual wave
soldering machines. The pins have an RoHS-compliant finish that
is compatible with both Pb and Pb-free wave soldering processes.
A maximum preheat rate of 3C/s is suggested. The wave
preheat process should be such that the temperature of the
power module board is kept below 210C. For Pb solder, the
recommended pot temperature is 260C, while the Pb-free
solder pot is 270C max. Not all RoHS-compliant through-hole
products can be processed with paste-through-hole Pb or Pb-free
reflow process. If additional information is needed, please
consult with your Lineage Power representative for more details.
Air
Flow
Power Module
Wind Tunnel
PWBs
7.24
[0.285]
76.2
[3.0]
Probe Location
for measuring
airflow and
ambient
temperature
50.8
[2.00]
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 17
Example Application Circuit
Requirements:
Vin: 12V
Vout: 1.8V
Iout: 1A max., worst case load transient is from 1A to 1.5A
Vout: 1.5% of Vout (27mV) for worst case load transient
Vin, ripple 1.5% of Vin (180mV, p-p)
CI1 1x10F/16V ceramic capacitor (e.g. TDK C Series)
CI2 100F/16V bulk electrolytic
CO1 1x47F/6.3V ceramic capacitor (e.g. TDK C Series, Murata GRM32ER60J476ME20)
CTune 3900pF ceramic capacitor (can be 1206, 0805 or 0603 size)
RTune 180 ohms SMT resistor (can be 1206, 0805 or 0603 size)
RTrim 10k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
MODULE
VOUT
GND
TRIM
RTUNE
CTUNE
RTrim
VIN
CO1
+
CI2
CI1
Vin+
Vout+
ON/OFF
Q3
MODULE
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 18
Mechanical Outline
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
September 3, 2020
©2014 General Electric Company. All rights reserved.
Page 19
Recommended Pad Layout
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
NQR002A0X4: Non-Isolated DC-DC Power Modules
3Vdc –14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86-21-53899666
Europe, Middle-East and Africa:
+49.89.878067-280
Go.ABB/Industrial
GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no
liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or
information.
September 3, 2020
©2016 General Electric Company. All International rights reserved.
Version 1_2
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
Table 4. Device Codes
Device Code
Input
Voltage Range
Output
Voltage
Output
Current
On/Off
Logic
Connector
Type
Comcodes
NQR002A0X4Z
3 – 14Vdc
0.6 – 5.5Vdc
2A
Positive
SIP
CC109171468
-Z refers to RoHS compliant parts