GE Industrial Solutions 12V AustinLynx 10A User Manual

GE

Data Sheet

12V AustinLynxTM 10A: Non-Isolated DC-DC Power Module,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output

`

RoHS Compliant

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Servers and storage applications

 Networking equipment

Features

 Compliant to RoHS EU Directive 2002/95/EC (-Z

versions)

 Compliant to ROHS EU Directive 2002/95/EC with lead

solder exemption (non-Z versions)

 Delivers up to 10A of output current

 High efficiency – 93% at 3.3V full load (V

 Small size and low profile:

33.00 mm x 13.46 mm x 8.28 mm

(1.300 in x 0.530 in x 0.326 in)

 Low output ripple and noise

 High Reliability:

Calculated MTBF = 4.4 M hours at 25

 Output voltage programmable from 0.75 Vdc to 5.5 Vdc

via external resistor

 Line Regulation: 0.3% (typical)

 Load Regulation: 0.4% (typical)

 Temperature Regulation: 0.4% (typical)

 Remote On/Off

 Remote Sense

 Output overcurrent protection (non-latching)

 Overtemperature protection

 Wide operating temperature range (-40°C to 85°C)

†

 UL* 60950-1Recognized, CSA

Certified, and VDE

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

‡

0805:2001-12 (EN60950-1) Licensed

C22.2 No. 60950-1-03

= 12.0V)

IN

o

C Full-load

Description

The 12V Austin LynxTM Programmable SMT (surface mount technology) power modules are non-isolated DC-DC converters that
can deliver up to 10A of output current with full load efficiency of 93% at 3.3V output. These modules provide a precisely regulated
output voltage programmable via an external resistor from 0.75Vdc to 5.5Vdc over a wide range of input voltage (V
Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Standard
features include remote On/Off, remote sense, output voltage adjustment, overcurrent and overtemperature protection.

* 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

= 10 – 14Vdc).

IN

May 8, 2013 ©2013 General Electric Company. All rights reserved.

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

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 V

Continuous

Operating Ambient Temperature All T

IN

A

(see Thermal Considerations section)

Storage Temperature All T

stg

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 10 12.0 14.0 Vdc

Maximum Input Current All I

(VIN= V

Input No Load Current V

IN, min

to V

IN, max

, IO=I

= 3.3Vdc)

O, max VO,set

= 0.75 Vdc I

O,set

IN,max

IN,No load

6.5 Adc

40 mA

-0.3 15 Vdc

-40 85 °C

-55 125 °C

(VIN = 12.0Vdc, IO = 0, module enabled) V

Input Stand-by Current All I

= 3.3Vdc I

O,set

100 mA

IN,No load

2.0 mA

IN,stand-by

(VIN = 12.0Vdc, module disabled)

Inrush Transient All I2t 0.4 A2s

Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V

IO= I

max,

; See Test configuration section)

Omax

IN, min

to V

IN,

All 20 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 15 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.

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 2

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point All V

(VIN=

, IO=I

IN, min

, TA=25°C)

O, max

Output Voltage All V

(Over all operating input voltage, resistive load,
and temperature conditions until end of life)

Adjustment Range All V

Selected by an external resistor

O, set

O, set

O

Output Regulation

Line (VIN=V

Load (IO=I

Temperature (T

IN, min

O, min

to V

) All

IN, max

to I

) All

O, max

to T

ref=TA, min

) All ⎯ 0.4 % V

A, max

Output Ripple and Noise on nominal output

(VIN=V

IN, nom

and IO=I

O, min

to I

O, max

Cout = 1μF ceramic//10μFtantalum capacitors)

RMS (5Hz to 20MHz bandwidth) All

Peak-to-Peak (5Hz to 20MHz bandwidth) All

External Capacitance

ESR ≥ 1 mΩ All C

ESR ≥ 10 mΩ All C

Output Current All I

Output Current Limit Inception (Hiccup Mode ) All I

Output Short-Circuit Current All I

(VO≤250mV) ( Hiccup Mode )

Efficiency V

VIN= V

IO=I

, TA=25°C V

IN, nom

= V

O, max , VO

V

O,set

V

V

V

V

= 0.75Vdc η 81.0 %

O, set

= 1.2Vdc η 87.5 %

O, set

= 1.5Vdc η 89.0 %

O,set

= 1.8Vdc η 90.0 %

O,set

= 2.5Vdc η 92.0 %

O,set

= 3.3Vdc η 93.0 %

O,set

= 5.0Vdc η 95.0 %

O,set

Switching Frequency All f

O, max

O, max

o

O, lim

O, s/c

sw

Dynamic Load Response

(dIo/dt=2.5A/μs; VIN = V

IN, nom

; TA=25°C)

Load Change from Io= 50% to 100% of Io,max;
1μF ceramic// 10 μF tantalum

All V

pk

Peak Deviation

Settling Time (Vo<10% peak deviation)

(dIo/dt=2.5A/μs; VIN = V

IN, nom

; TA=25°C)

Load Change from Io= 100% to 50%of Io,max:
1μF ceramic// 10 μF tantalum

All t

All V

s ⎯

pk

Peak Deviation

Settling Time (Vo<10% peak deviation)

All t

s

–2.0

–2.5%

⎯

⎯

0.7525 5.5 % V

+2.0 % V

+3.5% % V

O, set

O, set

O, set

⎯

⎯

⎯

⎯

0.3 % V

0.4 % V

12 15 mV

30 50 mV

O, set

O, set

O, set

rms

pk-pk

⎯ ⎯

⎯ ⎯

0

⎯

⎯

200

⎯

3

1000 μF

5000 μF

10 Adc

% I

Adc

o

⎯

⎯

⎯

⎯

⎯

⎯

300

200

25

200

25

⎯

⎯

⎯

⎯

⎯

kHz

mV

μs

mV

μs

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 3

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Dynamic Load Response

(dIo/dt=2.5A/μs; V VIN = V
Load Change from Io= 50% to 100% of Io,max;

Co = 2x150 μF polymer capacitors

Peak Deviation

Settling Time (Vo<10% peak deviation)

(dIo/dt=2.5A/μs; VIN = V
Load Change from Io= 100% to 50%of Io,max:

Co = 2x150 μF polymer capacitors

Peak Deviation

Settling Time (Vo<10% peak deviation)

IN, nom

IN, nom

; TA=25°C)

; TA=25°C)

All V

All t

All V

All t

pk

s

pk

s

⎯

⎯

⎯

⎯

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO=I

Weight

, TA=25°C) 4,400,000 Hours

O, max

⎯

5.6 (0.2)

100

25

100

25

⎯

⎯

⎯

⎯

⎯

mV

μs

mV

μs

g (oz.)

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 4

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

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

Remote On/Off Signal interface

(VIN=V

Compatible, Von/off signal referenced to GND

See feature description section)

Logic High (On/Off Voltage pin open - Module ON)

Von/Off All VIH — — VIN V

Ion/Off All IIH — — 10 μA

Logic Low (Von/Off ≤ 0.3V – Module Off)

Von/Off All VIL — — 0.3 V

Ion/off All IIL — — 1 mA

Turn-On Delay and Rise Times

(IO=I

Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (delay from
instant at which V

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)

Output voltage Rise time (time for Vo to rise from 10%
of V

Output voltage overshoot – Startup —

IO= I

Remote Sense Range All — — 0.5 V

Overtemperature Protection

(See Thermal Consideration section)

Input Undervoltage Lockout

to V

IN, min

O, max , VIN

o,set to 90% of Vo, set)

; VIN = 10.0 to 14Vdc, TA = 25 oC

O, max

Turn-on Threshold All

Turn-off Threshold All

; Open collector npn or equivalent

IN, max

= V

= 25 oC, )

IN, nom, TA

=V

until Vo=10% of Vo,set)

IN

IN, min

All Tdelay 3 msec

All Tdelay 3 msec

All Trise

All T

ref

— 4 6 msec

1

⎯

⎯

⎯

125

8.2

8.0

⎯

⎯

⎯

% V

°C

V

V

O, set

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 5

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC.

90

88

86

84

82

80

78

76

74

EFFICIENCY, η (%)

72

70

02 46 810

Vin=14V

Vin=12V

Vin=10V

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Figure 1. Converter Efficiency versus Output Current (Vout
=1.2Vdc).

92

90

88

86

84

82

80

78

EFFICIENCY, η (%)

76

74

02 46 810

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Vin=14V

Vin=12V

Vin=10V

Figure 2. Converter Efficiency versus Output Current (Vout =

1.5Vdc).

Figure 4. Converter Efficiency versus Output Current (Vout =

2.5Vdc).

Figure 5. Converter Efficiency versus Output Current (Vout =

3.3Vdc).

94

92

90

88

86

84

82

80

78

EFFICIENCY, η (%)

76

74

0246810

95

93

91

89

87

85

83

81

EFFICIENCY, η (%)

79

77

0246810

Vin=14V

Vin=12V

Vin=10V

Vin=14V

Vin=12V

Vin=10V

92

90

88

86

84

82

80

EFFICIENCY, η (%)

78

76

0246810

Vin=14V

Vin=12V

Vin=10V

96

94

92

90

88

86

84

82

EFFICIENCY, η (%)

80

78

0246810

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Figure3. Converter Efficiency versus Output Current (Vout =

1.8Vdc).

Figure 6. Converter Efficiency versus Output Current (Vout =

5.0Vdc).

GE

6

Vin=14V

Vin=12V

Vin=10V

,

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC.

6

5

(A)

4

IN

3

2

INPUT CURRENT, I

1

0

7 8 91011121314

INPUT VOLTAGE, VIN (V)

Figure 7. Input voltage vs. Input Current
(Vout = 3.3Vdc).

Io = 10A

Io=5A

Io=0 A

(V) (200mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

TIME

t (5 μs/div)

Figure 10. Transient Response to Dynamic Load Change from
50% to 100% of full load (Vo = 3.3Vdc).

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (2μs/div) TIME, t (5 μs/div)

Figure 8. Typical Output Ripple and Noise
(Vin = 12.0V dc, Vo = 2.5 Vdc, Io=10A).

(V) (20mV/div)

O

OUTPUT VOLTAGE

V

TIME, t (2μs/div) TIME, t (10μs/div)

Figure 9. Typical Output Ripple and Noise
(Vin = 12.0V dc, Vo = 5.0 Vdc, Io=10A).

(V) (200mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

Figure 11. Transient Response to Dynamic Load Change from
100% to 50% of full load (Vo = 3.3 Vdc).

(V) (100mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

Figure 12. Transient Response to Dynamic Load Change from
50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 μF
Polymer Capacitors).

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 7

y

,

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC.

(V) (5V/div)

IN

(V) (100mV/div)

O

(V) (2V/div) V

o

V

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUTVOLTAGE

I

TIME, t (10μs/div)

Figure 13. Transient Response to Dynamic Load Change
from 100% of 50% full load (Vo = 5.0 Vdc, Cext = 2x150 μF

mer Capacitors).

Pol

OUTPUT VOLTAGE INPUT VOLTAGE

Figure 16. Typical Start-Up with application of Vin with low­ESR polymer capacitors at the output (7x150 μF) (Vin = 12Vdc,
Vo = 5.0Vdc

Io = 10A, Co = 1050 μF).

TIME, t (2 ms/div)

(V) (5V/div)

On/off

V) (1V/div) V

O

V

OUTPUT VOLTAGE On/Off VOLTAGE

TIME, t (1 ms/div) TIME, t (2 ms/div)

Figure 14. Typical Start-Up Using Remote On/Off(Vin =

12.0Vdc, Vo = 5.0Vdc, Io = 10.0A).

(V) (5V/div)

On/off

(1V/div) V

O

OUTPUT VOLTAGE On/Off VOLTAGE

V

igure 15. Typical Start-Up Using Remote On/Off with Low-

F

TIME, t (1 ms/div) TIME, t (10ms/div)

ESR external capacitors (Co= 5000μF) (Vin = 12.0Vdc, Vo =

5.0Vdc, Io = 10.0A, Co = 1050μF).

(V) (2V/div)

On/off

V) (1V/div) V

O

V

OUTPUT VOLTAGE On/Off VOLTAGE

Figure 17 Typical Start-Up Using Remote On/Off with Prebias
(Vin = 12.0Vdc, Vo = 2.5Vdc, Io = 1.0A, Vbias =1.2Vdc).

(A) (10A/div)

O

OUTPUT CURRENT,

I

Figure 18. Output short circuit Current (Vin = 12.0Vdc, Vo =

0.75Vdc).

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 8

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Characteristic Curves (continued)

The following figures provide thermal derating curves for the 12V Austin Lynx Programmable SMT modules.

11

10

9

8

7

6

NC

5

100 LFM

4

200 LFM

3

300 LFM

2

400 LFM

OUTPUT CURRENT, Io (A)

1

0

20 30 40 50 60 70 80 90

AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC

Figure 19. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12.0 Vdc, Vo=0.75Vdc).

11

10

9

8

7

6

NC

5

100 LFM

4

200 LFM

3

300 LFM

2

400 LFM

1

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

AMBIENT TEMPERATURE, TA OC

Figure 20. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12.0Vdc, Vo=1.8 Vdc).

Figure 22. Derating Output Current versus Local Ambient
Temperature and Airflow (Vin = 12.0 Vdc, Vo=5.0 Vdc).

11

10

9

8

7

6

NC

5

100 LFM

4

200 LFM

3

300 LFM

2

400 LFM

1

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

11

10

9

8

7

6

NC

5

100 LFM

4

200 LFM

3

300 LFM

2

400 LFM

1

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

AMBIENT TEMPERATURE, TA OC

Figure 21. Derating Output Current versus Local Ambient
Temperature and Airflow

(Vin = 12.0Vdc, Vo=3.3 Vdc).

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 9

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Test Configurations

TO OSCILLOSCOPE

L

TEST

1μH

CS 1000μF

BATTERY

NOTE: Measure input reflected ripple current with a simulated

Electrolytic

E.S.R.<0.1Ω

@ 20°C 100kHz

source induct ance (L
possible battery impedance. Measure current as shown
above.

) of 1μH. Capacitor CS offsets

TEST

Figure 23. Input Reflected Ripple Current Test Setup.

COPPER STRIP

V

(+)

O

COM

1uF .

10uF

SCOPE

CIN

2x100μF
Tantalum

RESISTIVE
LOAD

CURRENT PROBE

VIN(+)

COM

Design Considerations

Input Filtering

The 12V Austin Lynx Programmable SMT 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.

In a typical application, 4x47 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 26 shows input ripple voltage
(mVp-p) for various outputs with 4x47 µF tantalum capacitors
and with 4x22 µF ceramic capacitor (TDK part #:
C4532X5R1C226M) at full load.

300

250

200

GROUND PLANE

NOTE: All voltage measurements to be take n 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 24. Output Ripple and Noise Test Setup.

R

R

contact

distribution

V

R

R

contact

distribution

NOTE: All volt age measurements to be tak en at th e module

termina ls, as sh own abo ve. If s ockets ar e used then
Kelvin c onnections are r equired at the modul e terminals
to avoid meas urement errors due t o socket c ontact
resistance.

IN

VIN(+)

COM

V

COM

R

O

contact Rdistribution

R

R

contact Rdistribution

LOAD

V

O

Figure 25. Output Voltage and Efficiency Test Setup.

V

. I

O

Efficiency

=

η

VIN. I

O

IN

x 100 %

150

10 0

50

Input Ripple Voltage (mVp-p)

0

0123456

Tantalum

Cer ami c

Output Voltage (Vdc)

Figure 26. Input ripple voltage for various output with 4x22
µF polymer and 4x47 µF ceramic capacitors at the input (full
load).

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 10

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Design Considerations (continued)

Output Filtering

The 12V Austin Lynx Programmable SMT module is designed for
low output ripple voltage and will meet the maximum output
ripple specification with 1 µF ceramic and 10 µF tantalum
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 15A in the positive input lead

.

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 11

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Feature Description

Remote On/Off

The 12V Austin Lynx Programmable SMT power modules
feature an On/Off pin for remote On/Off operation. If not using
the remote On/Off pin, leave the pin open (module will be On).
The On/Off pin signal (Von/Off) is referenced to ground. To
switch the module on and off using remote On/Off, connect an
open collector npn transistor between the On/Off pin and the
ground pin (See Figure 27).

During a logic-high (On/Off pin is pulled high internal to the
module) when the transistor is in the Off state, the power
module is ON. The maximum allowable leakage current of the
transistor when Von/off = V
when the transistor is turned-on, the power module is OFF.
During this state VOn/Off is less than 0.3V and the maximum
IOn/Off = 1mA.

VIN+

ON/OFF

+

V

I

ON/OFF

ON/OFF

Q1

is 10µA. During a logic-low

IN,max

MODULE

R2

R1

Q2

PWM Enable

R3

Q3 CSS

beyond its rating. The module will automatically restart after it
cools down.

Output Voltage Programming

The output voltage of the 12V Austin Lynx Programmable SMT
module can be programmed to any voltage from 0.75Vdc to

5.5Vdc by connecting a resistor (shown as Rtrim in Figure 28)
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:

Rtrim



−

Vo



10500



= 1000

7525.0



Ω

−




For example, to program the output voltage of the 12V Austin

Programmable SMT module to 1.8 Vdc, Rtrim is calculated

Lynx
is follows:

10500

VIN(+)



Rtrim

= 1000




VO(+)

−

75.08.1

−

Ω= kRtrim 024.9

Vout






R4

GND

_

Figure 27. Remote On/Off Implementation.

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 3 A.

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 T
exceeds 125

o

C (typical), but the thermal shutdown is not

intended as a guarantee that the unit will survive temperatures

,

ref

ON/OFF

GND

TRIM

R

trim

LOAD

Figure 28. Circuit configuration for programming output
voltage using an external resistor.

Table 1 provides Rtrim values required for some common
output voltages

Table 1

V

(V) Rtrim (KΩ)

O, set

0.7525 Open

1.2 22.46

1.5 13.05

1.8 9.024

2.5 5.009

3.3 3.122

5.0 1.472

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 12

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Feature Descriptions (continued)

By using a 1% tolerance trim resistor, set point tolerance of
±2% is 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
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 (P

).

I

o,max

Remote Sense

The 12V Austin Lynx Programmable SMT power modules have a
Remote Sense feature to minimize the effects of distribution
losses by regulating the voltage at the Remote Sense and GND
pins (See Figure 29). The voltage between the Sense pin and Vo
pin must not exceed 0.5V. Although both the Remote Sense
and the TRIM features can increase the output voltage Vo, the
maximum increase is not the sum of both. The maximum Vo
increase is the larger of either the Remote Sense or TRIM.

max

= V

o,set

under the Design Tools section, also calculates the values of
R

margin-up

and R

margin-down

for a specific output voltage and %
margin. Please consult your local GE technical
representative for additional details

Vo

Rmargin-down

Austin Lynx or
Lynx II Series

Q2

Trim

Rmargin-up

x

Rtrim

Q1

GND

Figure 30. Circuit Configuration for margining Output
voltage.

The amount of power delivered by the module is defined as the
output voltage multiplied by the output current (Vo x Io). When
using Remote Sense and/or TRIM, the output voltage of the
module can increase, which if the same output is maintained,
increases the power output by the module. Make sure that the
maximum output power of the module remains at or below the
maximum rated power. When the Remote Sense feature is not
being used, leave the Remote Sense pin unconnected.

R

distribution

R

distribution

R

contact

R

contact

VIN(+)

COM

V

Sense

COM

R

contact Rdistribution

R

contact Rdistribution

R

LOAD

O

Figure 29. Remote sense circuit configuration

Voltage Margining

Output voltage margining can be implemented in the 12V
Austin Lynx Programmable SMT modules by connecting a
resistor, R
up the output voltage and by connecting a resistor, R

, from Trim pin to Output pin. Figure 30 shows the circuit

down

configuration for output voltage margining. The POL
Programming Tool, available at www.lineagepower.com

, from Trim pin to ground pin for margining-

margin-up

margin-

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 13

Air

W

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Thermal Considerations

Power modules operate in a variety of thermal environments;
however, sufficient cooling should always 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 32. Note that the airflow is
parallel to the short axis of the module as shown in figure 31.
The derating data applies to airflow in either direction of the
module’s short axis.

T

Top View

ref

Air Flow

Figure 31. T

The thermal reference point, T
shown in Figure 31. For reliable operation this temperature
should not exceed 115

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.

Temperature measurement location.

ref

used in the specifications is

ref

o

C.

ind Tunnel

PWBs

Figure 32. 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 at different
local ambient temperatures (T
from natural convection and up to 2m/s (400 ft./min) are
shown in the Characteristics Curves section.

25.4_
(1.0)

Po w er M o d u le

76.2_
(3.0)

x

Pro b e Lo c a t io n

8.3_

(0.325)

for measuring
airflow and
ambient
temperature

flow

) for airflow conditions ranging

A

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 14

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

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.)

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 15

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

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.)

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 16

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Packaging Details

The 12V Austin Lynx Programmable SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of 250
modules per reel.

All Dimensions are in millimeters and (in inches).

Reel Dimensions:
Outside Dimensions: 330.2 mm (13.00)
Inside Dimensions: 177.8 mm (7.00”)
Tape Width: 44.00 mm (1.732”)

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 17

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Surface Mount Information

o

Pick and Place

The 12V Austin Lynx Programmable SMT modules use an
open frame construction and are designed for a fully
automated assembly process. The modules are fitted with a
label designed to provide a large surface area for pick and
place operations. The label meets all the requirements for
surface mount processing, as well as safety standards, and
is able to withstand reflow temperatures of up to 300

o

C. The
label also carries product information such as product code,
serial number and the location of manufacture.

Figure 33. Pick and Place Location.

Nozzle Recommendations

The module weight has been kept to a minimum by using
open frame construction. Even so, these modules have a
relatively large mass when compared to conventional SMT
components. Variables such as nozzle size, tip style, vacuum
pressure and placement speed should be considered to
optimize this process. The minimum recommended nozzle
diameter for reliable operation is 6mm. The maximum nozzle
outer diameter, which will safely fit within the allowable
component spacing, is 9 mm.

Oblong or oval nozzles up to 11 x 9 mm may also be used
within the space available.

Tin Lead Soldering

The Austin LynxTM 12 V SMT power modules are lead free
modules and can be soldered either in a lead-free solder
process or in a conventional Tin/Lead (Sn/Pb) process. It is
recommended that the customer review data sheets in order
to customize the solder reflow profile for each application
board assembly. The following instructions must be
observed when soldering these units. Failure to observe
these instructions may result in the failure of or cause
damage to the modules, and can adversely affect long-term
reliability.

In a conventional Tin/Lead (Sn/Pb) solder process peak
reflow temperatures are limited to less than 235

o

C.

Typically, the eutectic solder melts at 183
and subsequently wicks the device connection. Sufficient
time must be allowed to fuse the plating on the connection
to ensure a reliable solder joint. There are several types of
SMT reflow technologies currently used in the industry.
These surface mount power modules can be reliably
soldered using natural forced convection, IR (radiant
infrared), or a combination of convection/IR. For reliable
soldering the solder reflow profile should be established by
accurately measuring the modules CP connector
temperatures.

300

250

200

15 0

10 0

REFLOW TEMP (°C)

50

0

Peak Temp 235oC

Heat zone

oCs-1

max 4

So ak zone
30-240s

Preheat zo ne

oCs-1

max 4

REFLOW TIME (S)

Figure 34. Reflow Profile for Tin/Lead (Sn/Pb) process.

240

235

230

225

220

215

210

MAX TEMP SOLDER (°C)

205

200

0 102030405060

Figure 35. Time Limit Curve Above 205oC for Tin/Lead
(Sn/Pb) process.

C, wets the land,

Co o ling
zo ne

oCs-1

1- 4

T

above

lim

o

C

205

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 18

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Surface Mount Information (continued)

Lead Free Soldering

The –Z version 12V Austin Lynx Programmable SMT modules
are lead-free (Pb-free) and RoHS compliant and are both
forward and backward compatible in a Pb-free and a SnPb
soldering process. Failure to observe the instructions below
may result in the failure of or cause damage to the modules
and can adversely affect long-term reliability.

Pb-free Reflow Profile

Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for Nonhermetic
Solid State Surface Mount Devices) for both Pb-free solder
profiles and MSL classification procedures. This standard
provides a recommended forced-air-convection reflow
profile based on the volume and thickness of the package
(table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu
(SAC). The recommended linear reflow profile using
Sn/Ag/Cu solder is shown in Fig. 36.

MSL Rating

The 12V Austin Lynx Programmable SMT modules have a
MSL rating of 2a.

Storage and Handling

The recommended storage environment and handling
procedures for moisture-sensitive surface mount packages
is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping
and Use of Moisture/Reflow Sensitive Surface Mount
Devices). Moisture barrier bags (MBB) with desiccant are
required for MSL ratings of 2 or greater. These sealed
packages should not be broken until time of use. Once the
original package is broken, the floor life of the product at
conditions of ≤ 30°C and 60% relative humidity varies
according to the MSL rating (see J-STD-033A). The shelf life
for dry packed SMT packages will be a minimum of 12
months from the bag seal date, when stored at the following
conditions: < 40° C, < 90% relative humidity.

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 (AN04-001).

300

Per J-STD-020 Rev. C

250

200

150

Heating Zone
1°C/Second

100

Reflow Temp (°C)

50

0

Figure 36. Recommended linear reflow profile using
Sn/Ag/Cu solder.

Peak Temp 260°C

* Min. Time Above 235°C
15 Seconds

*Time Above 217°C

60 Seconds

Reflow Time (Seconds)

Cooling
Zone

May 8, 2013 ©2013 General Electric Company. All rights reserved. Page 19

GE

Data Sheet

12V AustinLynxTM10A: Non-Isolated DC-DC Power Modules,Programmable

10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current

Ordering Information

Please contact your GE Sales Representative for pricing, availability and optional features.

Table 2. Device Codes

Device Code

AXA010A0X3-SR 10 – 14Vdc 0.75 – 5.5 V 10 A

AXA010A0X3-SRZ 10 – 14Vdc 0.75 – 5.5 V 10 A

-Z refers to RoHS-compliant versions

Input

Voltage

Output

Voltage

Output

Current

Efficiency

93%
93%

Connector

Type

SMT 108970138

SMT CC109101326

Comcodes

Contact Us

For more information, call us at

USA/Canada:

[phone], or [phone]

Asia-Pacific:

+86.021.54279977*808

Europe, Middle-East and Africa:

+49.89.74423-206

India:
+91.80.28411633

May 8, 2013 ©2013 General Electric Company. All rights reserved. Version 1.44

www.ge.com/powerelectronics