GE Energy
Data Sheet
October 1, 2015 ©2015 General Electric Company. All rights reserved.
6A Austin MicroLynx IITM: 12V SIP Non-Isolated DC-DC Power Module
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
Features
Compliant to RoHS EU Directive 2011/65/EU (-Z
versions)
Compliant to RoHS EU Directive 2011/65/EU under
exemption 7b (Lead solder exemption). Exemption 7b
will expire after June 1, 2016 at which time this
product will no longer be RoHS compliant (non-Z
versions)
Flexible output voltage sequencing
EZ-SEQUENCETM
Delivers up to 6A output current
High efficiency – 89% at 5.0V full load (VIN = 12.0V)
Small size and low profile:
25.4 mm x 12.7 mm x 6.68 mm
(1.00 in x 0.5 in x 0.263 in)
Low output ripple and noise
High Reliability:
Calculated MTBF = 15.3M hours at 25oC Full-load
Constant switching frequency (300 KHz)
Programmable Output voltage
Line Regulation: 0.3% (typical)
Load Regulation: 0.4% (typical)
Temperature Regulation: 0.4 % (typical)
Remote On/Off
Output overcurrent protection (non-latching)
Wide operating temperature range (-40°C to 85°C)
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03
Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
Description
Austin MicroLynx IITM 12V SIP power modules are non-isolated dc-dc converters that can deliver up to 6A of output current with
full load efficiency of 89% at 5.0V output. These modules provide precisely regulated output voltage programmable via external
resistor from 0.75Vdc to 5.5Vdc over a wide range of input voltage (VIN = 8.3 - 14V). The Austin MicroLynx IITM 12V series has a
sequencing feature, EZ-SEQUENCETM that enable designers to implement various types of output voltage sequencing when
powering multiple voltages on a board. Their open-frame construction and small footprint enable designers to develop cost-
and space-efficient solutions.
* 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
RoHS Compliant
EZ-SEQUENCETM
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 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
Sequencing voltage All Vseq -0.3 VIN,max Vdc
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 Vo,set ≤ 3.63 VIN 8.3 12 14 Vdc
Vo,set > 3.63 VIN 8.3 12 13.2 Vdc
Maximum Input Current All IIN,max 4.5 Adc
(VIN= VIN, min to VIN, max, IO=IO, max )
Input No Load Current VO,set = 0.75 Vdc IIN,No load 17 mA
(VIN = VIN, nom, Io = 0, module enabled) VO,set = 5.5 Vdc IIN,No load 100 mA
Input Stand-by Current All IIN,stand-by 1.2 mA
(VIN = VIN, nom, module disabled)
Inrush Transient All I2t 0.4 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN, min to VIN,
max, IO= IOmax ; See Test configuration section)
All 30 mAp-p
Input Ripple Rejection (120Hz) All 30 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 being part of a
complex 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 6 A
(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 Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point All VO, set -2.0 VO, set +2.0 % VO, set
(VIN=VIN, min, IO=IO, max, TA=25°C)
Output Voltage All VO, set -2.5% +3.5% % VO, set
(Over all operating input voltage, resistive load, and
temperature conditions until end of life)
Adjustment Range All VO 0.7525 5.5 Vdc
Selected by an external resistor
Output Regulation
Line (VIN=VIN, min to VIN, max) All 0.3 % VO, set
Load (IO=IO, min to IO, max) All 0.4 % VO, set
Temperature (Tref=TA, min to TA, max) All 0.4 % VO, set
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
Cout = 1μF ceramic//10μFtantalum capacitors)
RMS (5Hz to 20MHz bandwidth) All 15 30 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) All 50 75 mVpk-pk
External Capacitance
ESR ≥ 1 mΩ All CO, max 1000 μF
ESR ≥ 10 mΩ All CO, max 3000 μF
Output Current All Io 0 6 Adc
Output Current Limit Inception (Hiccup Mode ) All IO, lim 200 % Io
(VO= 90% of VO, set)
Output Short-Circuit Current All IO, s/c 2 Adc
(VO≤250mV) ( Hiccup Mode )
Efficiency
V
O, set
=
1.2Vdc
η 80.0 %
VIN= VIN, nom, TA=25°C
V
O,set
=
1 5Vdc
η 83.0 %
IO=IO, max , VO= VO,set
V
O,set
=
1 8Vdc
η 83.5 %
V
O,set
=
2 5Vdc
η 86.5 %
V
O,set
=
3 3Vdc
η 89.0 %
V
O,set
=
5 0Vdc
η 91.0 %
Switching Frequency All fsw 300 kHz
Dynamic Load Response
(dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) All Vpk 200 mV
Load Change from Io= 50% to 100% of Io,max; 1μF
ceramic// 10 μF tantalum
Peak Deviation
Settling Time (Vo<10% peak deviation) All ts 25 µs
(dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) All Vpk 200 mV
Load Change from Io= 100% to 50%of Io,max: 1μF
ceramic// 10 μF tantalum
Peak Deviation
Settling Time (Vo<10% peak deviation)
All ts 25 µs
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 4
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Dynamic Load Response
(dIo/dt=2.5A/µs; V VIN = VIN, nom; TA=25°C) All Vpk 50 mV
Load Change from Io= 50% to 100% of Io,max;
Co = 2x150 μF polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation) All ts 50 µs
(dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) All Vpk 50 mV
Load Change from Io= 100% to 50%of Io,max:
Co = 2x150 μF polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation) All ts 50 µs
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (IO=IO, max, TA=25°C)
per Telecordia SR-332 Issue 1: Method 1 Case 3 15,371,900 Hours
Weight 2.8 (0.1) g (oz.)
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 5
Feature 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
Device code with Suffix “4” – Positive logic
(On/Off is open collector/drain logic input;
Signal referenced to GND - See feature description section)
Input High Voltage (Module ON) All VIH ― ― VIN, max V
Input High Current All IIH ― ― 10 μA
Input Low Voltage (Module OFF) All VIL -0.2 ― 0.3 V
Input Low Current All IIL ― 0.2 1 mA
Device Code with no suffix – Negative Logic
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Input High Voltage (Module OFF) All VIH 2.5 ― VIN,max Vdc
Input High Current All IIH 0.2 1 mA
Input Low Voltage (Module ON) All VIL -0.2 ― 0.3 Vdc
Input low Current All IIL ― 10 μA
Turn-On Delay and Rise Times
(IO=IO, max , VIN = VIN, nom, TA = 25 oC, )
Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (delay from
instant at which VIN =VIN, min until Vo=10% of Vo,set)
All
Tdelay
―
3
―
msec
Case 2: Input power is applied for at least one second
and then the On/Off input is set to logic Low (delay from
instant at which Von/Off=0.3V until Vo=10% of Vo, set)
All
Tdelay
―
3
―
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
All
Trise
―
4
6
msec
Output voltage overshoot – Startup ―
1
% VO, set
IO= IO, max; VIN = 8.3 to 14Vdc, TA = 25 oC
Sequencing Delay time
Delay from VIN, min to application of voltage on SEQ pin All TsEQ-delay 10 msec
Tracking Accuracy (Power-Up: 2V/ms) All |VSEQ –Vo | 100 200 mV
(Power-Down: 1V/ms) All |VSEQ –Vo | 300 500 mV
(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)
Overtemperature Protection
All Tref 140 °C
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold All 7.9 V
Turn-off Threshold All 7.8 V
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 6
Characteristic Curves
The following figures provide typical characteristics for the Austin MicroLynxTM II 12V SIP modules at 25ºC.
EFFICIENCY, η (%)
72
74
76
78
80
82
84
86
0123456
V
IN
=8.3V
V
IN
=12V
V
IN
=14V
EFFICIENCY, η (%)
70
73
76
79
82
85
88
91
0123456
VIN=8.3V
VIN=12V
VIN=14V
OUTPUT CURRENT, I
O
(A)
OUTPUT CURRENT, I
O
(A)
Figure 1. Converter Efficiency versus Output Current (Vout
= 1.2Vdc).
Figure 4. Converter Efficiency versus Output Current (Vout
= 2.5Vdc).
EFFICIENCY, η (%)
74
76
78
80
82
84
86
88
0123456
V
IN
=8.3V
V
IN
=12V
V
IN
=14V
EFFICIENCY, η (%)
72
75
78
81
84
87
90
93
0 1 2 3 4 5 6
V
IN
=8.3V
V
IN
=12V
V
IN
=14V
OUTPUT CURRENT, I
O
(A)
OUTPUT CURRENT, I
O
(A)
Figure 2. Converter Efficiency versus Output Current (Vout
= 1.5Vdc).
Figure 5. Converter Efficiency versus Output Current (Vout
= 3.3Vdc).
EFFICIENCY, η (%)
74
76
78
80
82
84
86
88
0123456
VIN=8.3V
VIN=12V
VIN=14V
EFFICIENCY, η (%)
75
78
81
84
87
90
93
96
0123456
VIN=8.3V
VIN=12V
VIN=14V
OUTPUT CURRENT, I
O
(A)
OUTPUT CURRENT, I
O
(A)
Figure 3. Converter Efficiency versus Output Current
(Vout
= 1.8Vdc).
Figure 6. Converter Efficiency versus Output Current (Vout
= 5.0Vdc).
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 7
Characteristic Curves (continued)
The following figures provide typical characteristics for the MicroLynxTM II 12V SIP modules at 25ºC.
INPUT CURRENT, IIN (A)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
7 8 9 10 11 12 13 14
Io = 6A
Io=3A
Io=0A
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2A/div) VO (V) (100mV/div)
INPUT VOLTAGE, VIN (V)
TIME, t (5 µs/div)
Figure 7. Input voltage vs. Input Current
(Vout = 5Vdc).
Figure 10. Transient Response to Dynamic Load Change
from 50% to 100% of full load (Vo = 3.3Vdc).
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2A/div) VO (V) (100mV/div)
TIME, t (2µs/div)
TIME, t (5 µs/div)
Figure 8. Typical Output Ripple and Noise
(Vin = 12V dc, Vo = 2.5 Vdc, Io=6A).
Figure 11. Transient Response to Dynamic Load Change
from 100% to 50% of full load (Vo = 3.3 Vdc).
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2A/div) VO (V) (100mV/div)
TIME, t (2µs/div)
TIME, t (10µs/div)
Figure 9. Typical Output Ripple and Noise
(Vin = 12.0V dc, Vo = 3.3 Vdc, Io=6A).
Figure 12. Transient Response to Dynamic Load Change
from 50% to 100% of full load (Vo = 5.0 Vdc, Cext = 2x150
μF Polymer Capacitors).
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 8
Characteristic Curves (continued)
The following figures provide typical characteristics for the Austin MicroLynxTM II 12V SIP modules at 25ºC.
OUTPUT CURRENT OUTPUTVOLTAGE
IO (A) (2A/div) VO (V) (100mV/div)
OUTPUT VOLTAGE, INPUT VOLTAGE Vo (V)
(2V/div) VIN (V) (5V/div)
TIME, t (10µs/div)
TIME, t (1 ms/div)
Figure 13. Transient Response to Dynamic Load Change
from 100% of 50% full load (Vo = 5.0 Vdc, Cext = 2x150 μF
Polymer Capacitors).
Figure 16. Typical Start-Up with application of Vin with (Vin
= 12Vdc, Vo = 3.3Vdc, Io = 6A).
OUTPUT VOLTAGE On/Off VOLTAGE
VOV) (2V/div) VOn/off (V) (5V/div)
OUTPUT VOLTAGE On/Off VOLTAGE
VOV) (1V/div) VOn/off (V) (2V/div)
TIME, t (1 ms/div)
TIME, t (1 ms/div)
Figure 14. Typical Start-Up Using Remote On/Off
(Vin = 12Vdc, Vo = 3.3Vdc, Io = 6.0A).
Figure 17 Typical Start-Up using Remote On/off with
Prebias (Vin = 12Vdc, Vo = 1.8Vdc, Io = 1A, Vbias =1.0 Vdc).
OUTPUT VOLTAGE On/Off VOLTAGE
VOV) (1V/div) VOn/off (V) (2V/div)
OUTPUT CURRENT,
IO (A) (5A/div)
TIME, t (1 ms/div)
TIME, t (20ms/div)
Figure 15. Typical Start-Up Using Remote On/Off with Low-
ESR external capacitors (7x150uF Polymer)
(Vin = 12Vdc, Vo = 3.3Vdc, Io = 6.0A, Co = 1050µF).
Figure 18. Output short circuit Current (Vin = 12Vdc, Vo =
0.75Vdc).
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 9
Characteristic Curves (continued)
The following figures provide thermal derating curves for the Austin MicroLynxTM II 12V SIP modules.
OUTPUT CURRENT, Io (A)
0
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90
NC
1.0m/s (200 LFM)
0.5m/s (100 LFM)
1.5m/s (300 LFM)
2.0m/s (400 LFM)
OUTPUT CURRENT, Io (A)
0
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90
NC
1.0m/s (200 LFM)
0.5m/s (100 LFM)
1.5m/s (300 LFM)
2.0m/s (400 LFM)
AMBIENT TEMPERATURE, T
A
O
C
AMBIENT TEMPERATURE, T
A
O
C
Figure 19. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12Vdc, Vo=0.75Vdc).
Figure 22. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12Vdc, Vo=3.3 Vdc).
OUTPUT CURRENT, Io (A)
0
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90
NC
1.0m/s (200 LFM)
0.5m/s (100 LFM)
1.5m/s (300 LFM)
2.0m/s (400 LFM)
OUTPUT CURRENT, Io (A)
0
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90
NC
1.0m/s (200 LFM)
0.5m/s (100 LFM)
1.5m/s (300 LFM)
2.0m/s (400 LFM)
AMBIENT TEMPERATURE, T
A
O
C
AMBIENT TEMPERATURE, T
A
O
C
Figure 20. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12Vdc, Vo=1.8 Vdc).
Figure 23. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12Vdc, Vo=5.0 Vdc).
OUTPUT CURRENT, Io (A)
0
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90
NC
1.0m/s (200 LFM)
0.5m/s (100 LFM)
1.5m/s (300 LFM)
2.0m/s (400 LFM)
AMBIENT TEMPERATURE, TA OC
Figure 21. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12Vdc, Vo=2.5 Vdc).
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 10
Test Configurations
TO OSCILLOSCOPE
CURRENT PROBE
L
TEST
1μH
BATTERY
C
S
1000μF
Electrolytic
E.S.R.<0.1Ω
@ 20°C 100kHz
2x100μF
Tantalum
V
IN
(+)
COM
NOTE: Measure input ref l ect ed ripple current with a sim ulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
C
IN
Figure 24. Input Reflected Ripple Current Test Setup.
NOTE: All voltage measurem ents 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 25. Output Ripple and Noise Test Setup.
V
O
COM
V
IN
(+)
COM
R
LOAD
R
contact
R
distribution
R
contact
R
distribution
R
contact
R
contact
R
distribution
R
distribution
V
IN
V
O
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvi n c onnec ti ons are requ ired at the modul e termi nals
to avoi d m eas urem en t er r ors du e to s oc k et c ont act
resistance.
Figure 26. Output Voltage and Efficiency Test Setup.
η
=
V
O
.
I
O
V
IN
.
I
IN
x
100
%
Efficiency
Design Considerations
Input Filtering
The Austin MicroLynxTM II 12V SIP module should be
connected to a low-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.
In a typical application, 2x47 µF low-ESR tantalum
capacitors (AVX part #: TPSE476M025R0100, 47µF 25V
100 mΩ ESR tantalum capacitor) will be sufficient to
provide adequate ripple voltage at the input of the
module. To minimize ripple voltage at the input, low ESR
ceramic capacitors are recommended at the input of the
module. Figure 27 shows input ripple voltage (mVp-p) for
various outputs with 2x47 µF tantalum capacitors and
with 2x 22 µF ceramic capacitor (TDK part #:
C4532X5R1C226M) at full load.
Input Ripple Voltage (mVp-p)
0
50
100
150
200
250
300
350
0 1 234 5 6
Ceramic
Tantalum
Output Voltage (Vdc)
Figure 27. Input ripple voltage for various output with
2x47 µF tantalum capacitors and with 2x22 µF ceramic
capacitors at the input (80% of Io,max).
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 11
Design Considerations (continued)
Output Filtering
The Austin MicroLynxTM II 12V SIP module is designed for low
output ripple voltage and will meet the maximum output
ripple specification with 1 µF ceramic and 10 µF polymer
capacitors at the output of the module. 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 polymer and ceramic
capacitors are recommended to improve the dynamic
response of the module. For stable operation of the module,
limit the capacitance to less than the maximum output
capacitance as specified in the electrical specification table.
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 60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-
12 (EN60950-1) Licensed.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the input
must meet SELV requirements. The power module has
extra-low voltage (ELV) outputs when all inputs are ELV.
The input to these units is to be provided with a fast-acting
fuse with a maximum rating of 6A in the positive input lead.
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 12
Feature Description
Remote On/Off
Austin MicroLynxTM II 12V SIP power modules feature an
On/Off pin for remote On/Off operation. Two On/Off logic
options are available in the Austin MicroLynxTM II 12V series
modules. Positive Logic On/Off signal, device code suffix “4”,
turns the module ON during a logic High on the On/Off pin
and turns the module OFF during a logic Low. Negative
logic On/Off signal, no device code suffix, turns the module
OFF during logic High and turns the module ON during logic
Low.
For positive logic modules, the circuit configuration for using
the On/Off pin is shown in Figure 28. The On/Off pin is an
open collector/drain logic input signal (Von/Off) that is
referenced to ground. During a logic-high (On/Off pin is
pulled high internal to the module) when the transistor Q1 is
in the Off state, the power module is ON. Maximum
allowable leakage current of the transistor when Von/off =
VIN,max is 10µA. Applying a logic-low when the transistor Q1
is turned-On, the power module is OFF. During this state
VOn/Off must be less than 0.3V. When not using positive
logic On/off pin, leave the pin unconnected or tie to VIN.
Q1
R2
R1 Q2
R3
R4
Q3 CSS
GND
VIN+
ON/OFF
PW M Enable
+
_
ON/OFF
V
I
ON/OFF
MODULE
Figure 28. Circuit configuration for using positive logic
On/OFF.
For negative logic On/Off devices, the circuit configuration is
shown is Figure 29. The On/Off pin is pulled high with an
external pull-up resistor (typical Rpull-up = 68k, +/- 5%). When
transistor Q1 is in the Off state, logic High is applied to the
On/Off pin and the power module is Off. The minimum
On/off voltage for logic High on the On/Off pin is 2.5 Vdc. To
turn the module ON, logic Low is applied to the On/Off pin by
turning ON Q1. When not using the negative logic On/Off,
leave the pin unconnected or tie to GND.
Q1
R1
R2
Q2 CSS
GND
PW M Enable
ON/OFF
VIN+
ON/OFF
_
+
V
I
MODULE
pull-up
R
ON/OFF
Figure 29. Circuit configuration for using negative logic
On/OFF.
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 typical average output current
during hiccup is 2A.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit,
module operation is disabled. The module will begin to
operate at an input voltage above the undervoltage lockout
turn-on threshold.
Overtemperature Protection
To provide over temperature protection in a fault condition,
the unit relies upon the thermal protection feature of the
controller IC. The unit will shutdown if the thermal reference
point Tref2, (see Figure 33) exceeds 140oC (typical), but the
thermal shutdown is not intended as a guarantee that the
unit will survive temperatures beyond its rating. The module
will automatically restarts after it cools down.
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 13
Feature Descriptions (continued)
Output Voltage Programming
The output voltage of the Austin MicroLynxTM II 12V SIP can
be programmed to any voltage from 0.75Vdc to 5.5Vdc by
connecting a resistor (shown as Rtrim in Figure 30) between
Trim and GND pins of the module. Without an external
resistor between Trim and GND pins, the output of the
module will be 0.7525Vdc. To calculate the value of the trim
resistor, Rtrim for a desired output voltage, use the following
equation:
Ω
−
−
=1000
7525.0
10500
Vo
Rtrim
Rtrim is the external resistor in Ω
Vo is the desired output voltage
For example, to program the output voltage of the Austin
MicroLynxTM 12V module to 1.8V, Rtrim is calculated as
follows:
−
−
=1000
7525.08.1
10500
Rtrim
Ω
=kRtrim 024.9
V
O
(+)
TRIM
GND
R
trim
LOAD
V
IN
(+)
ON/OFF
Figure 30. Circuit configuration to program output
voltage using an external resistor
Table 1 provides Rtrim values for most common
output voltages.
Table 1
V
O, set
(V)
Rtrim (KΩ)
0.7525
Open
1.2
22.46
1.5
13.05
1.8
9.024
2.5
5.009
3.3
3.122
5.5
1.472
Using 1% tolerance trim resistor, set point tolerance of ±2%
is achieved as specified in the electrical specification. The
POL Programming Tool, available at
www.gecriticalpower.com under the Design Tools section,
helps determine the required external trim resistor needed
for a specific output voltage.
The amount of power delivered by the module is defined
as the voltage at the output terminals multiplied by the
output current. When using the trim feature, the output
voltage of the module can be increased, which at the
same output current would increase the power output of
the module. Care should be taken to ensure that the
maximum output power of the module remains at or
below the maximum rated power (Pmax = Vo,set x Io,max).
Voltage Margining
Output voltage margining can be implemented in the
Austin MicroLynxTM II modules by connecting a resistor,
Rmargin-up, from Trim pin to ground pin for margining-up
the output voltage and by connecting a resistor, Rmargin-
down, from Trim pin to Output pin. Figure 31 shows the
circuit configuration for output voltage margining. The
POL Programming Tool, available at
www.gecriticalpower.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
GE technical representative for additional details
Vo
Austin Lynx or
Lynx II Series
GND
Trim
Q1
Rtrim
Rmargin-up
Q2
Rmargin-down
Figure 31. Circuit Configuration for margining Output
voltage.
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 14
Feature Descriptions (continued)
Voltage Sequencing
Austin MicroLynxTM II 12V series of modules include a
sequencing feature, EZ-SEQUENCETM that enables users to
implement various types of output voltage sequencing in
their applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature,
either tie the SEQ pin to VIN or leave it unconnected.
When an analog voltage is applied to the SEQ pin, the
output voltage tracks this voltage until the output reaches
the set-point voltage. The SEQ voltage must be set higher
than the set-point voltage of the module. The output
voltage follows the voltage on the SEQ pin on a one-to-one
volt basis. By connecting multiple modules together,
customers can get multiple modules to track their output
voltages to the voltage applied on the SEQ pin.
For proper voltage sequencing, first, input voltage is applied
to the module. The On/Off pin of the module is left
unconnected (or tied to GND for negative logic modules or
tied to VIN for positive logic modules) so that the module is
ON by default. After applying input voltage to the module, a
minimum of 10msec delay is required before applying
voltage on the SEQ pin. During this time, potential of 50mV
(± 10 mV) is maintained on the SEQ pin. After 10msec
delay, an analog voltage is applied to the SEQ pin and the
output voltage of the module will track this voltage on a
one-to-one volt bases until output reaches the set-point
voltage. To initiate simultaneous shutdown of the modules,
the SEQ pin voltage is lowered in a controlled manner.
Output voltage of the modules tracks the voltages below
their set-point voltages on a one-to-one basis. A valid input
voltage must be maintained until the tracking and output
voltages reach ground potential to ensure a controlled
shutdown of the modules.
When using the EZ-SEQUENCETM feature to control start-up
of the module, pre-bias immunity feature during start-up is
disabled. The pre-bias immunity feature of the module
relies on the module being in the diode-mode during start-
up. When using the EZ-SEQUENCETM feature, modules goes
through an internal set-up time of 10msec, and will be in
synchronous rectification mode when voltage at the SEQ pin
is applied. This will result in sinking current in the module if
pre-bias voltage is present at the output of the module.
When pre-bias immunity during start-up is required, the EZ-
SEQUENCETM feature must be disabled. For additional
guidelines on using EZ-SEQUENCETM feature of Austin
MicroLynxTM II 12V, contact your GE technical representative
for preliminary application note on output voltage
sequencing using Austin Lynx II series.
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 15
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
33. Note that the airflow is parallel to the long axis of the
module as shown in Figure 32. The derating data applies to
airflow in either direction of the module’s long axis.
Figure 32. Tref Temperature measurement location.
The thermal reference point, Tref 1 used in the specifications
of thermal derating curves is shown in Figure 32. For
reliable operation this temperature should not exceed
125oC.
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 33. Thermal Test Set-up.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Thermal derating curves showing
the maximum output current that can be delivered by
various module versus local ambient temperature (TA) for
natural convection and up to 1m/s (200 ft./min) are shown
in the Characteristics Curves section.
Air
flow
x
Power Module
Wind Tunnel
PWBs
7.24_
(0.285)
76.2_
(3.0)
Probe Location
for measuring
airflo w and
ambient
temperature
25.4_
(1.0)
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 16
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
The 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 3°C/s
is suggested. The wave preheat process should be such
that the temperature of the power module board is kept
below 210°C. For Pb solder, the recommended pot
temperature is 260°C, while the Pb-free solder pot is 270°C
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 GE technical representative for more details.
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 17
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.)
Top View
Side View
Bottom View
PIN
FUNCTION
1
Vo
2
Trim
3
GND
A
SEQ
4
V
IN
5
On/Off
GE Energy
Data Sheet
6A Austin MicroLynxIITM: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
October 1, 2015 ©2015 General Electric Company. All rights reserved. Page 18
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.)
Through Hole Pad Layout – Back view
PIN
FUNCTION
1
Vo
2
Trim
3
GND
A
SEQ
4
V
IN
5
On/Off
GE Energy
Data Sheet
6A Austin MicroLynxII
TM
: 12V SIP Non-Isolated DC-DC Power Modules
8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 6A Output Current
Contact Us
For more information, call us at
USA/Canada:
+1 877 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
www.gecriticalpower.com
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.
October 1, 2015 ©2015 General Electric Company. All International rights reserved. Version 1.35
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
Table 2. Device Codes
Device Code Input
Voltage
Output
Voltage
Output
Current
Efficiency
3.3V@ 6A
Connector
Type Comcodes
ATA006A0X 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP 108989034
ATA006A0XZ 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP CC109101763
ATA006A0X4
8.3 – 14Vdc
0.75 – 5.5Vdc
6 A
89.0%
SIP
108989042
ATA006A0X4Z 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP CC109104642
-Z refers to RoHS-compliant versions.
