ATA006A0XZ - GE CRITICAL POWER

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3Vdc – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A Output Current

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

Document No: DS04-025 ver. 1.33

PDF name: microlynx_II_12v_sip_ds.pdf

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)

 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.

RoHS Compliant

EZ-SEQUENCETM

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A 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 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.

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Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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 VO, set = 1.2Vdc η 80.0 %

VIN= VIN, nom, TA=25°C VO,set = 1.5Vdc η 83.0 %

IO=IO, max , VO= VO,set V

O,set = 1.8Vdc η 83.5 %

O,set = 2.5Vdc η 86.5 %

O,set = 3.3Vdc η 89.0 %

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

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Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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.)

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Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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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

IN, 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 ― V

IN,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

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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Characteristic Curves

The following figures provide typical characteristics for the Austin MicroLynxTM II 12V SIP modules at 25ºC.

EFFICIENCY, η (%)

0123456

VIN=8.3V

VIN=12V

VIN=14V

EFFICIENCY, η (%)

0 1234 56

VIN=8.3V

VIN=12V

VIN=14V

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

Figure 1. Converter E

ficiency versus Output Current

(Vout = 1.2Vdc).

Figure 4. Converter Efficiency versus Output Current

(Vout = 2.5Vdc).

EFFICIENCY, η (%)

0 123456

VIN=8.3

VIN=12V

VIN=14V

EFFICIENCY, η (%)

0123456

VIN=8.3V

VIN=12V

VIN=14V

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

Figure 2. Converter Efficiency versus Output Current

(Vout = 1.5Vdc).

Figure 5. Converter Efficiency versus Output Current

(Vout = 3.3Vdc).

EFFICIENCY, η (%)

0123456

VIN=8.3V

VIN=12V

VIN=14V

EFFICIENCY, η (%)

0 123456

VIN=8.3V

VIN=12V

VIN=14V

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

Figure 3. Converter Efficiency versus Output Current

(Vout = 1.8Vdc).

Figure 6. Converter Efficiency versus Output Current

(Vout = 5.0Vdc).

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

Characteristic Curves (continued)

The following figures provide typical characteristics for the MicroLynxTM II 12V SIP modules at 25ºC.

INPUT CURRENT, IIN (A)

0.5

1. 5

2.5

3.5

4.5

7 8 91011121314

Io = 6 A

Io=3 A

Io=0 A

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (2A/div) VO (V) (100mV/div)

INPUT VOLTAGE, VIN

(

)

TIME

(

s/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).

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Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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

F Pol

mer Ca

acitors

)

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 = 1050

)

Figure 18. Output short circuit Current (Vin = 12Vdc,

Vo = 0.75Vdc).

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Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 9

Characteristic Curves (continued)

The following figures provide thermal derating curves for the Austin MicroLynxTM II 12V SIP modules.

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

1.0m/s (200 LFM)

0.5m/s (100 LFM)

1.5m/ s (3 0 0 LFM )

2.0m/s (400 LFM)

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

1.0m/s (200 LFM)

0.5m/s (100 LFM)

1.5m/ s (3 0 0 LFM )

2.0m/s (400 LFM)

AMBIENT TEMPERATURE, TA

C AMBIENT TEMPERATURE, TA

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)

20 30 40 50 60 70 80 90

1.0m/s (200 LFM)

0.5m/s (100 LFM)

1.5m/ s ( 3 0 0 LFM )

2.0m/s (400 LFM )

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

1. 0 m / s ( 2 0 0 LF M )

0.5m/s (100 LFM)

1. 5 m/ s ( 3 0 0 L F M )

2.0m/s (400 LFM)

AMBIENT TEMPERATURE, TA

C AMBIENT TEMPERATURE, TA

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)

20 30 40 50 60 70 80 90

1.0m/s (200 LFM)

0 .5m/ s ( 10 0 LFM )

1.5m/ s (300 LFM )

2.0m/s (400 LFM )

AMBIENT TEMPERATURE, T

Figure 21. Derating Output Current versus Local

Ambient Temperature and Airflow (Vin = 12Vdc,

Vo=2.5 Vdc).

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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Test Configurations

TO OSCILLOSCOPE CURRENT PROBE

LTEST

1μH

BATTERY

CS 1000μF

Electrolytic

E.S.R.<0.1Ω

@ 20°C 100kHz

2x100μF

Tantalum

VIN(+)

COM

NOTE: Measure input reflected ripple current with a simulated

source inductance (LTEST) of 1μH. Capacitor CS offsets

possible battery impedance. Measure current as shown

above.

CIN

Figure 24. Input Reflected Ripple Current Test

Setup.

NOTE: All voltage measurements to be taken at the module

terminals, as shown above. If sockets are used then

Kelvin connections are required at the module terminals

to avoid measurement errors due to socket contact

resistance.

O (+)

COM

1uF .

RESISTIVE

LOAD

SCOPE

COPPER STRIP

GROUND PLANE

10uF

Figure 25. Output Ripple and Noise Test Setup.

COM

VIN(+)

COM

RLOAD

Rcontact Rdistribution

Rcontact

Rdistribution

VIN VO

NOTE: All voltage measurements to be taken at the module

terminals, as shown above. If sockets are used then

Kelvin connections are required at the module terminals

to avoid measurement errors due to socket contact

resistance.

Figure 26. Output Voltage and Efficiency Test

Setup.

η =

VO.I

VIN.I

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.

10 0

15 0

200

250

300

350

0 123456

Input Ripple Voltage (mVp-p)

Tant al um

Ceramic

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).

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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.

LINEAGE POWER 11

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 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.

Q3 CSS

GND

VIN+

ON/OFF

PWM Enable

ON/OFF

ION/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.

Q2 CSS

GND

PWM Enable

ON/OFF

VIN+

ON/OFF

MODULE

pull-up

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.

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

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:

⎥

⎦

⎤

⎢

⎣

⎡−

−

=1000

7525.0

10500

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

kRtrim 024.9

(+)

TRIM

GND

trim

LOAD

(+)

ON/OFF

Figure 30. Circuit configuration to program

output voltage using an external resistor

Table 1 provides Rtrim values for most com

output voltages.

mon

Table 1

O, set (V) Rtrim

(

Ω)

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.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 (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.lineagepower.com under the

Design Tools section, also calculates the values of

Rmargin-up and Rmargin-down for a specific output

voltage and % margin. Please consult your Lineage

Power technical representative for additional details

Austin Lynx or

Lynx II Series

GND

Trim

Rtrim

Rmargin-up

Rmargin-down

Figure 31. Circuit Configuration for margining

Output voltage.

LINEAGE POWER 13

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 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 Lineage Power technical

representative for preliminary application note on

output voltage sequencing using Austin Lynx II series.

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

Thermal Considerations Thermal Considerations

Power modules operate in a variety of thermal

environments; however, sufficient cooling should be

provided to help ensure reliable operation.

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.

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.

Air Flow

Tref2

Top View

Bottom View

Tref1 (inductor winding)

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.

flow

Power Module

ind Tunnel

PWBs

7.24_

(0.285)

76.2_

(3.0)

Probe Location

for measuring

airflow and

ambient

temperature

25.4_

(1.0)

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.

LINEAGE POWER 15

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 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 Lineage Power

technical representative for more details.

x IITM 12V SIP Non-isolated Power Modules:Data Sheet

January 18, 2010

Austin MicroLyn

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A 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.)

Top View

Side View

Bottom View

PIN FUNCTION

1 Vo

2 Trim

3 GND

A SEQ

4 VIN

5 On/Off

LINEAGE POWER 17

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 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] cated]

x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)

PIN PIN FUNCTION FUNCTION

1 Vo

2 Trim

3 GND

A SEQ

4 VIN

5 On/Off

Through Hole Pad Layout – Back view

Data Sheet

January 18, 2010

Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:

8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current

LINEAGE POWER 19

Document No: DS04-025 ver. 1.33

PDF name: microlynx_II_12v_sip_ds.pdf

Ordering Information

Please contact your Lineage Power 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.

World Wide Headquarters

Lineage Power Corporation

601 Shiloh Road, Plano, TX 75074, USA

+1-800-526-7819

(Outside U.S.A.: +1-972-244-9428)

www.lineagepower.com

e-mail: techsupport1@lineagepower.com

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Tel: +65 6593 7211

Europe, Middle-East and Africa Headquarters

Tel: +49 898 780 672 80

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Tel: +91 80 28411633

Lineage Powe r reserves the right to make change s to the prod uct(s) or informat ion contained herein without not ice. No liability is assumed as a result of their use o r

pplication. No rights under any patent accompany the sale of an y such product(s) or information.

Lineage Powe r DC-DC p roducts are prote cted under various pa tents. Informa tion on the se patents is available at www.lineagepo wer.com/paten ts.

2009 Line a

e Power Cor

oration

(

Plano

Texas

)

All Inte rn ational Ri

hts Reserved.