GE Industrial Solutions Austin Minilynx SMT User Manual

Data Sheet
September 10, 2013

Austin MinilynxTM SMT Non-isolated Power Modules:

2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc Output;3A Output Current

RoHS Compliant

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

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 3A output current

 High efficiency – 94% at 3.3V full load (V

 Small size and low profile:

20.3 mm x 11.4 mm x 7.27 mm

(0.80 in x 0.45 in x 0.286 in)

 Low output ripple and noise

 High Reliability:

Calculated MTBF = 11.9M hours at 25

 Constant switching frequency (300 kHz)

 Output voltage programmable from 0.75 Vdc to

3.63Vdc via external resistor

 Line Regulation: 0.4% (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

03 Certified, and VDE
Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

‡

0805:2001-12 (EN60950-1)

C22.2 No. 60950-1-

= 5.0V)

IN

o

C Full-load

Description

Austin MiniLynxTM SMT (surface mount technology) power modules are non-isolated dc-dc converters that can
deliver up to 3A of output current with full load efficiency of 94.0% at 3.3V output. These modules provide a
precisely regulated output voltage programmable via an external resistor from 0.75Vdc to 3.63Vdc over a wide
range of input voltage (V
develop cost- and space-efficient solutions.

* UL is a re gistered trademark of Underwriters Laboratories, Inc.

†

CSA is a reg istered trademark of Canadian Standards Associat ion.

‡

VDE is a t rademark of Verband Deutscher Elektrotechniker e.V.

** ISO is a registered trademark of the International Orga nization of Standards

= 2.4 – 5.5Vdc). Their open-frame construction and small footprint enable designers to

IN

Document No: DS04-026 ver. 1.13

PDF name: minilynx_smt_ds.pdf

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

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

-0.3 5.8 Vdc

-40 85 °C

(see Thermal Considerations section)

Storage Temperature All T

stg

-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 V

Maximum Input Current All I

(VIN= V

IN, min

to V

IN, max

, IO=I

O, max VO,set

= 3.3Vdc)

Input No Load Current V

≤ V

– 0.5V VIN 2.4

O,set

IN

IN,max

= 0.75Vdc I

O,set

IN,No load

⎯

5.5 Vdc

3.0 Adc

10 mA

(VIN = 5.0Vdc, IO = 0, module enabled) V

Input Stand-by Current All I

= 3.3Vdc I

O,set

17 mA

IN,No load

0.6 mA

IN,stand-by

(VIN = 5.0Vdc, module disabled)

Inrush Transient All I2t 0.04 A2s

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

= I

IN, max, IO

; See Test configuration section)

Omax

IN, min

to

All 35 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 fast­acting 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.

LINEAGE POWER 2

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point All V

(VIN=

IN, min

, IO=I

, 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

to I

ref=TA, min

) All

IN, max

) All

O, max

to T

) All ⎯ 0.4

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

(VO= 90% of V

)

O, set

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

= 0.75Vdc η 81.5 %

O,set

= 1.2Vdc η 87.0 %

O, set

= 1.5Vdc η 89.0 %

O,set

= 1.8Vdc η 90.0 %

O,set

= 2.5Vdc η 93.0 %

O,set

= 3.3Vdc η 94.0 %

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 V

-3%

+2.0 % V

O, set

⎯

+3% % V

0.7525 3.63 Vdc

⎯

⎯

⎯

⎯

0.4

0.4

⎯

⎯

⎯

10 15 mV

25 50 mV

% V

% V

% V

⎯ ⎯

⎯ ⎯

1000 μF

5000 μF

0 3 Adc

⎯

⎯

220

2

⎯

⎯

⎯

⎯

⎯

⎯

⎯

300

250

50

250

50

⎯

⎯

⎯ μs

⎯

⎯ μs

O, set

O, set

O, set

O, set

O, set

pk-pk

% I

Adc

kHz

mV

mV

rms

o

LINEAGE POWER 3

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

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

⎯

⎯

⎯

⎯

60

100

60

100

⎯

⎯ μs

⎯

⎯ μs

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO=I

Weight

, TA=25°C) 11,965,153 Hours

O, max

⎯

2.8 (0.1)

⎯

g (oz.)

mV

mV

LINEAGE POWER 4

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

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 ― ― 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 1.5 ― V

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=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 ― ― 0.5
Overtemperature Protection

(See Thermal Consideration section)

Input Undervoltage Lockout

Turn-on Threshold All

Turn-off Threshold All

= V

O, max , VIN

o,set to 90% of Vo, set)

; VIN = 3.0 to 5.5Vdc, TA = 25 oC

O, max

= 25 oC, )

IN, nom, TA

=V

IN

until Vo=10% of Vo,set)

IN, min

All Tdelay ― 3.9 ― msec

All Tdelay ― 3.9 ― msec

All Trise

All T

ref

V

IN, max

Vdc

IN,max

― 4.2 8.5 msec

1

⎯

2.2 V

2.0 V

140

⎯

% V

°C

O, set

LINEAGE POWER 5

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

Characteristic Curves

The following figures provide typical characteristics for the Austin MiniLynxTM SMT modules at 25ºC.

94

91

88

85

82

79

76

73

EFFICIENCY, η (%)

70

0 0 .6 1.2 1.8 2.4 3

VIN = 2.5V

VIN = 3.3V

VIN = 5.0V

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

Figure 1. Converter Efficiency versus Output Current
(Vout = 0.75Vdc).

94

91

88

85

82

79

76

73

EFFICIENCY, η (%)

70

0 0.6 1.2 1.8 2.4 3

VIN = 2.5V

VIN = 3.3V

VIN = 5.0V

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

Figure 2. Converter Efficiency versus Output Current
(Vout = 1.2Vdc).

96

93

90

87

84

81

78

75

EFFICIENCY, η (%)

72

0 0.6 1.2 1.8 2.4 3

VIN = 2.5V

VIN = 3.3V

VIN = 5.0V

97

94

91

88

85

82

79

76

EFFICIENCY, η (%)

73

00.61.21.82.4 3

Figure 4. Converter Efficiency versus Output Current
(Vout = 1.8Vdc).

98

95

92

89

86

83

80

77

EFFICIENCY, η (%)

74

0 0.6 1.2 1.8 2.4 3

Figure 5. Converter Efficiency versus Output Current
(Vout = 2.5Vdc).

99

96

93

90

87

84

81

78

EFFICIENCY, η (%)

75

0 0.6 1.2 1.8 2.4 3

VIN = 2.5V

VIN = 3.3V

VIN= 5.0V

VIN = 3.3V

VIN = 4.0V

VIN= 5.0V

VIN = 4.0V

VIN = 5.0V

VIN= 5.5V

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

Figure 3. Converter Efficiency versus Output Current
(Vout = 1.5Vdc).

Figure 6. Converter Efficiency versus Output Current
(Vout = 3.3Vdc).

LINEAGE POWER 6

Data Sheet

(V)

September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the Austin MiniLynxTM SMT modules at 25ºC.

3.5

3

2.5

(A)

IN

2

1. 5

1

0.5

INPUT CURRENT, I

0

012345

Figure 7. Input voltage vs. Input Current

INPUT VOLTAGE, V

IN

(Vout =2.5Vdc).

Io=3 A

Io=1.5A

Io=0 A

(V) (100mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

TIME, t (20 μs/div)

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

(V) (10mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20 μs/div)

Figure 8. Typical Output Ripple and Noise
(V

IN = 5.0V dc, Vo = 0.75Vdc, Io=3A).

(V) (10mV/div)

O

OUTPUT VOLTAGE

V

TIME, t (1μs/div) TIME, t (100μs/div)

Figure 9. Typical Output Ripple and Noise
(

VIN = 5.0V dc, Vo = 3.3Vdc, Io=3A).

(V) (100mV/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) (20mV/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).

LINEAGE POWER 7

Data Sheet

μ

September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the Austin MiniLynxTM SMT modules at 25ºC.

(V) (20mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUTVOLTAGE

I

TIME, t (100μs/div)

Figure 13. Transient Response to Dynamic Load
Change from 100% of 50% full load (Vo = 3.3Vdc, Cext
= 2x150

ON/OFF VOLTAGE OUTPUT VOLTAGE

F Polymer Capacitors).

(V) (1V/div)

O

(V) (2V/div) V

On/off

V

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

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

IN = 5.0Vdc, Vo = 3.3Vdc, Io = 3A).

(V) (1V/div)

O

(V) (2V/div) V

IN

INPUT VOLTAG OUTPUT VOLTAGE

V

TIME, t (2ms/div)

Figure 16. Typical Start-Up with application of Vin

IN = 5.0Vdc, Vo = 3.3Vdc, Io = 3A).

(V

(V) (0.5V/div)

O

(V) (2V/div) V

On/off

V

ON/OFF VOLTAGE OUTPUT VOLTAGE

Figure 17 Typical Start-Up Using Remote On/Off
with Prebias (VIN = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A,
Vbias =1.0Vdc).

(V) (1V/div)

O

(A) (5A/div)

O

(V) (2V/div) V

On/off

V

ON/OFF VOLTAGE OUTPUT VOLTAGE

F

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

TIME, t (2ms/div) TIME, t (10ms/div)

Low-ESR external capacitors (7x150uF Polymer)

VIN = 5.0Vdc, Vo = 3.3Vdc, Io = 3A, Co = 1050μF).

(

OUTPUT CURRENT,

I

Figure 18. Output short circuit Current
(V

IN = 5.0Vdc, Vo = 0.75Vdc).

LINEAGE POWER 8

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide thermal derating curves for the Austin MiniLynxTM SMT modules.

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

0 LFM

AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC

Figure 19. Derating Output Current versus Local
Ambient Temperature and Airflow (
Vo=3.3Vdc).

OUTPUT CURRENT, Io (A)

3.5

3

2.5

2

1. 5

1

0.5

0

20 30 40 50 60 70 80 90

0 LFM

AMBIENT TEMPERATURE, TA OC

VIN = 5.0,

Figure 20. Derating Output Current versus Local
Ambient Temperature and Airflow (V

IN = 5.0Vdc,

Vo=1.8 Vdc).

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

0 LFM

AMBIENT TEMPERATURE, TA OC

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

(VIN = 5.0Vdc,

Vo=0.75 Vdc).

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

0 LFM

20 30 40 50 60 70 80 90

Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow (V
Vo=2.5 Vdc).

3.5

3

2.5

2

1. 5

1

0.5

0

0 LFM

20 30 40 50 60 70 80 90

Figure 23. Derating Output Current versus Local
Ambient Temperature and Airflow (VIN = 3.3dc,
Vo=1.2 Vdc).

3.5

3

2.5

2

1. 5

1

0.5

0

0 LFM

20 30 40 50 60 70 80 90

Figure 24. Derating Output Current versus Local
Ambient Temperature and Airflow (VIN = 3.3dc,
Vo=0.75 Vdc).

IN = 3.3dc,

LINEAGE POWER 9

Data Sheet
September 10, 2013

Austin MiniLynxTMSMT Non-isolated Power Modules:

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A 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. Capacit or CS offsets

TEST

Figure 25. Input Reflected Ripple Current Test
Setup.

COPPER STRIP

V

(+)

O

1uF .

COM

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.

10uF

GROUND PLANE

Figure 26. Output Ripple and Noise Test Setup.

R

R

contact

distribution

R

R

contact

distribution

NOTE: All volt age meas urements to be taken at th e module

terminals , as shown above. If socket s are us ed then
Kelvin conn ections are requir ed at the modu le termi nals
to avoid m easurem ent errors due to s ocket c ontact
resistance.

VIN(+)

V

IN

COM

Figure 27. Output Voltage and Efficiency Test
Setup.

V

. I

O

Efficiency

=

η

VIN. I

O

IN

2x100μF
Tantalum

SCOPE

V

O

COM

CURRENT PROBE

CIN

RESISTIVE

LOAD

R

V

O

R

x 100 %

VIN(+)

COM

contactRdistribution

R

contactRdistribution

LOAD

Design Considerations

Input Filtering

The Austin MiniLynxTM SMT 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.

To minimize input voltage ripple, low-ESR polymer
and ceramic capacitors are recommended at the input
of the module. Figure 28 shows the input ripple
voltage (mVp-p) for various outputs with 1x22µF
(TDK: C3225X5R0J226V) ceramic capacitor at the
input of the module. Figure 29 shows the input ripple
with 1x47µF (TDK: C3225X5R0J476M) ceramic
capacitor at full load.

60

40

20

00

80

60

40

20

Input Ripple Voltage (mVp-p)

0

3.3Vin

5Vin

0 0 .5 1 1.5 2 2 .5 3 3 .5

Output Voltage (Vdc)

Figure 28. Input ripple voltage for various outputs
with 1x22 µF ceramic capacitor at the input (full­load).

16 0

14 0

12 0

10 0

80

60

40

20

Input Ripple Voltage (mVp-p)

0

3.3Vin

5Vin

00.511.522.533.5

Output Voltage (Vdc)

Figure 29. Input ripple voltage for various outputs
with 1x47 µF ceramic capacitor at the input (full
load).

LINEAGE POWER 10

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

Design Considerations (continued)

Output Filtering

The Austin MiniLynxTM 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. 60950-1­03, 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 fast­acting fuse with a maximum rating of 6A in the
positive input lead

.

LINEAGE POWER 11

Data Sheet
September 10, 2013

Austin MiniLynxTMSMT Non-isolated Power Modules:

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Feature Description

Remote On/Off

The Austin MiniLynxTM SMT power modules feature
an On/Off pin for remote On/Off operation. Two
On/Off logic options are available in the Austin
MiniLynx
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 on the On/Off pin 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 30. The
On/Off pin is an open collector/drain logic input signal
(Von/Off) that is referenced to ground. During a logic­high (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 = V
Applying a logic-low when the transistor Q1 is turned­On, 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 V

Figure 30. Circuit configuration for using positive
logic On/OFF.

For negative logic On/Off devices, the circuit
configuration is shown is Figure 31. The On/Off pin is
pulled high with an external pull-up resistor (typical
R
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 1.5Vdc. 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.

TM

series modules. Positive Logic On/Off

is 10µA.

IN,max

IN.

VIN+

R2

ON/OFF

+

V

GND

ON/OFF

Q1

_

I

ON/OFF

pull-up = 5k, +/- 5%). When transistor Q1 is in the Off

R1

R3

R4

MODULE

Q2

PWM Enable

Q3 CSS

VIN+

ON/OFF

GND

R

pull-up

I

ON/OFF

V

ON/OFF

Q1

+

_

MODULE

PWM Enable

R1

Q2 CSS

R2

Figure 31. 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 T
exceeds 140

o

C (typical), but the thermal shutdown

,

ref

is not intended as a guarantee that the unit will
survive temperatures beyond its rating. The
module will automatically restart after it cools down.

Output Voltage Programming

The output voltage of the Austin MiniLynxTM SMT can
be programmed to any voltage from 0.75 Vdc to 3.63
Vdc by connecting a single resistor (shown as Rtrim
in Figure 32) between the TRIM and GND pins of the
module. Without an external resistor between TRIM
pin and the ground, the output voltage of the module
is 0.7525 Vdc. To calculate the value of the resistor
Rtrim for a particular output voltage Vo, use the
following equation:

Rtrim



−

7525.0

Vo



21070



= 5110



−

Ω




LINEAGE POWER 12

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynx

Feature Descriptions (continued)

Output Voltage Programming (continued)

For example, to program the output voltage of the
Austin MiniLynx
calculated is follows:

V

ON/OFF

TM

module to 1.8 Vdc, Rtrim is

21070



= 5110

Rtrim



−

7525.08.1



V

(+)

IN

(+)

O

TRIM



−




Ω= kRtrim 004.15

LOAD

TM

SMT Non-isolated Power Modules:

margining-up the output voltage and by connecting a
resistor, R

margin-down

, from the Trim pin to the Output
pin for margining-down. Figure 33 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 R
R

margin-down

for a specific output voltage and % margin.

margin-up

and

Please consult your local Lineage Power technical
representative for additional details.

Vo

Rmargin-down

Austin Lynx or
Lynx II Series

Q2

Trim

R

trim

GND

Figure 32. Circuit configuration to program
output voltage using an external resistor.

Table 1 provides Rtrim values required for some
common output voltages.

Table 1

V

O, set

(V)

Rtrim (KΩ)

0.7525 Open

1.2 41.973

1.5 23.077

1.8 15.004

2.5 6.947

3.3 3.160

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.lineagepower.com under
the Design Tools section, helps determine the
required external trim resistor needed for a specific
output voltage.

Voltage Margining

Output voltage margining can be implemented in the
Austin MiniLynx
R

margin-up

TM

modules by connecting a resistor,

, from the Trim pin to the ground pin for

Rmargin-up

Rtrim

Q1

GND

Figure 33. Circuit Configuration for margining
Output voltage.

LINEAGE POWER 13

Data Sheet

A

September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

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 set­up is shown in Figure 35. Note that the airflow is
parallel to the long axis of the module as shown in
figure 34. The derating data applies to airflow in
either direction of the module’s long axis.

Air Flow

x

5.97_

(0.235)

ir

flow

(3.0)

25.4_
(1.0)

76.2_

ind Tu nn e l

PWBs

Figure 35. Thermal Test Set-up.

Po w e r M od u le

Pro b e Lo c a tio n
for measuring
airflow and
ambient
temperature

Tref

Figure 34. T
location.

The thermal reference point, T
specifications is shown in Figure 34. 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 Board­Mounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.

Temperature measurement

ref

used in the

ref

o

C.

LINEAGE POWER 14

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynx

Mechanical Outline

Dimensions are in millimeters and (inches).

Tolerances: x.x mm

x.xx mm

± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

± 0.25 mm (x.xxx in ± 0.010 in.)

TM

SMT Non-isolated Power Modules:

BOTTOM VIEW SIDE VIEW

Co-planarity (max): 0.102 [0.004]

LINEAGE POWER 15

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Recommended Pad Layout

Dimensions are in millimeters and (inches).

Tolerances: x.x mm

x.xx mm

PIN FUNCTION

1 On/Off

2 VIN

3 GND

4 Trim

5 VOUT

± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

± 0.25 mm (x.xxx in ± 0.010 in.)

Austin MiniLynxTMSMT Non-isolated Power Modules:

LINEAGE POWER 16

Data Sheet
September 10, 2013

Austin MiniLynx

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

TM

SMT Non-isolated Power Modules:

Packaging Details

The Austin MiniLynxTM SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of 400
modules per reel.

All Dimensions are in millimeters and (in inches).

Reel Dimensions

Outside diameter: 330.2 mm (13.00)

Inside diameter: 177.8 mm (7.00”)

Tape Width: 44.0 mm (1.73”)

LINEAGE POWER 17

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

Surface Mount Information

Pick and Place

The Austin MiniLynxTM 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 placing. The label meets all the
requirements for surface mount processing, as well as
safety standards and is able to withstand maximum
reflow temperature. The label also carries product
information such as product code, serial number and
location of manufacture.

Figure 36. 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 pick &
placement speed should be considered to optimize
this process. The minimum recommended nozzle
diameter for reliable operation is 3mm. The maximum
nozzle outer diameter, which will safely fit within the
allowable component spacing, is 8 mm max.

Tin Lead Soldering

The Austin MiniLynxTM SMT power modules are lead
free modules and can be soldered either in a lead-free
solder process or 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.

The Austin MiniLynx
free modules and can be soldered either in a lead-free
solder process or a conventional Tin/Lead (Sn/Pb)
process. It is recommended that the customer review

TM

SMT power modules are lead

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.

300

250

200

15 0

10 0

REFLOW TEMP (°C)

50

0

Peak T emp 235oC

Heat zo ne

oCs-1

max 4

Soak zo ne
30-240s

Preheat zo ne

oCs-1

max 4

REFLOW TIME (S)

Co o ling
zo ne

oCs-1

1- 4

T

above

lim

o

205

C

Figure 37. Reflow Profile for Tin/Lead (Sn/Pb)
process.

240

235

230

225

220

215

210

MAX TEMP SOLDER (°C)

205

200

0 102030405060

Figure 38. Time Limit Curve Above 205oC Reflow
for Tin Lead (Sn/Pb) process.

LINEAGE POWER 18

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynx

Surface Mount Information (continued)

Lead Free Soldering

The –Z version Austin MiniLynx 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 Figure. 39.

MSL Rating

The Austin MiniLynxTM SMT modules have a MSL
rating of 2a.

Storage and Handling

The Austin MiniLynxTM modules have a MSL rating of

1. 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

TM

SMT Non-isolated Power Modules:

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

Heat ing Zone
1°C/Second

100

Reflow Temp (°C)

50

0

Figure 39. 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

LINEAGE POWER 19

Data Sheet
September 10, 2013

2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current

Austin MiniLynxTMSMT Non-isolated Power Modules:

Ordering Information

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

Table 2. Device Codes

Device Code

AXH003A0X-SR 2.4 – 5.5Vdc 0.75 – 3.63Vdc 3 A

AXH003A0X-SRZ 2.4 – 5.5Vdc 0.75 – 3.63Vdc 3 A

AXH003A0X4-SR 2.4 – 5.5Vdc 0.75 – 3.63Vdc 3 A

AXH003A0X4-SRZ 2.4 – 5.5Vdc 0.75 – 3.63Vdc 3 A

Input

Voltage Range

-Z refers to RoHS-compliant codes

Output
Voltage

Output

Current

Efficiency

3.3V@ 3A

94.0 %

94.0 %

94.0 %

94.0 %

On/Off

Logic

Negative SMT 108991196

Negative SMT CC109101301

Positive SMT 108991205

Positive SMT 109100014

Connector

Type

Comcodes

Asia-Pacific Headquarters

Tel: + 65 6593 7211

World Wide Headquarters
Lineage Power Corporation

601 Shil oh Roa d, Plano, TX 75074, USA
[phone]
(Outsi de U.S.A.: [phone])

www.lineagepower.com
e-mail: techs [e-mail]

Linea ge Power res erves th e right to make change s to the prod uct(s) or i nformat ion contained herein without not ice. No l iability is assumed as a result o f their use or

pplication . No righ ts under any patent accompany the sal e of an y such produc t(s) or informati on.

Linea ge Power D C-DC pro ducts are p rotected unde r v ariou s patents. Inf orma tion on the se patents is availabl e at www.line agepower.com/paten ts.

2009 Line age Power Corporation, (Plan o, Texas) All Inte rn ational Rights Reserved.

Europe, Middle-East and Africa Headquarters

Tel: + 49 898 780 672 80

India Headquarters
Tel: + 91 80 2841163 3

LINEAGE POWER 20

Document No: DS04-026 ver. 1.14

PDF name: minilynx_smt_ds.pdf