GE Industrial Solutions Austin Lynx II 12 V SMT User Manual

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Page 1

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A Output Current

II 12 V SMT Non-Isolated Power Modules:

RoHS Compliant

EZ-SEQUENCE

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)

 Flexible output voltage sequencing EZ-SEQUENCE

 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 = 15 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

03 Certified, and VDE Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

‡

†

0805:2001-12 (EN60950-1)

C22.2 No. 60950-1-

= 12.0V)

C Full-load

Description

Austin LynxTM II 12V 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 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. In addition to sequencing, standard features include remote On/Off, remote sense, output voltage adjustment, over current and over temperature protection.

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

†

CSA is a reg istered trademark of Canadian Standards Associ ation.

‡

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

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

= 8.3 – 14Vdc). The Austin LynxTM II 12V series has a sequencing feature, EZ-SEQUENCETM

Document No: DS03-106 ver. 1.27

PDF name: lynx_II_12v_smt_ds.pdf

Page 2

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V 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

Sequencing Voltage All V

Operating Ambient Temperature All T

SEQ

-0.3 15 Vdc

-0.3 V

iN, Max

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 Vo,set ≤ 3.63 VIN 8.3 12.0 14.0 Vdc

Vo,set > 3.63 VIN 8.3 12.0 13.2 Vdc

Maximum Input Current All I

(VIN= V

Input No Load Current V

(VIN = 12Vdc, IO = 0, module enabled) V

IN, min

to V

IN, max

, IO=I

O, max VO,set

= 3.3Vdc)

= 0.75 Vdc I

O,set

= 3.3Vdc I

O,set

IN,max

IN,No load

7.0 Adc

40 mA

100 mA

Input Stand-by Current All I

2.0 mA

IN,stand-by

(VIN = 12Vdc, module disabled)

Inrush Transient All I2t 0.4 A2s

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

= I

IN, max, IO

; See Test configuration section)

Omax

IN, min

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 fastacting 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.

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Page 3

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point All V

(VIN=V

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

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 % 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

O,set

= 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, lim

O, s/c

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

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

Peak Deviation

Settling Time (Vo<10% peak deviation)

All t

–2.0

–2.5%

⎯

+2.0 % V

+3.5% % V

0.7525 5.5 Vdc

⎯

0.3 % V

0.4 % V

12 30 mV

30 75 mV

⎯ ⎯

⎯

200

⎯

1000 μF

5000 μF

10 Adc

⎯

300

200

⎯

⎯ μs

⎯

⎯ μs

pk-pk

% I

Adc

kHz

O, set

rms

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Page 4

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT 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

; TA=25°C)

All V

All t

All V

All t

⎯

100

⎯

⎯ μs

⎯

⎯ μs

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO=I Telecordia SR-332 Issue 1: Method 1 Case 3

Weight

, TA=25°C)

O, max

⎯

15,618,000 Hours

5.6 (0.2)

⎯

g (oz.)

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Page 5

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V 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 2.5 ― 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

O, max , VIN

= V

= 25 oC, )

IN, nom, TA

All Tdelay 3 msec ON) and then input power is applied (delay from instant at which V

Case 2: Input power is applied for at least one second

until Vo=10% of Vo,set)

IN, min

All Tdelay 3 msec 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

o,set to 90% of Vo, set)

All Trise

Output voltage overshoot – Startup ―

IO= I

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

O, max

Sequencing Delay time

Delay from V

to application of voltage on SEQ pin All TsEQ-delay 10 msec

IN, min

Tracking Accuracy (Power-Up: 2V/ms) All VSEQ –Vo 100 200 mV

(Power-Down: 1V/ms) All VSEQ –Vo 300 500 mV

IN, min

to V

IN, max

; I

to I

O, min

VSEQ < Vo)

O, max

Remote Sense Range All ― ― 0.5 V

Overtemperature Protection

(See Thermal Consideration section)

Input Undervoltage Lockout

Turn-on Threshold All

Turn-off Threshold All

All T

ref

IN, max

Vdc

IN,max

― 4 6 msec

% V

O, set

⎯

125

⎯

°C

⎯

7.9

7.8

⎯

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Page 6

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Characteristic Curves

The following figures provide typical characteristics for the Austin Lynx

EFFICIENCY, η (%)

0246 810

OUTPUT CURRENT, IO (A)

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

EFFICIENCY, η (%)

02 46 810

OUTPUT CURRENT, IO (A)

Figure 2. Converter Efficiency versus Output Current (Vout = 1.5Vdc).

Vin=14V

Vin=12V

Vin=10V

Vin=14V

Vin=12V

Vin=10V

EFFICIENCY, η (%)

Figure 4. Converter Efficiency versus Output Current (Vout = 2.5Vdc).

EFFICIENCY, η (%)

Figure 5. Converter Efficiency versus Output Current (Vout = 3.3Vdc).

12 V II SMT modules at 25ºC.

0246810

Vin=14V

Vin=12V

Vin=10V

OUTPUT CURRENT, IO (A)

0246810

Vin=14V

Vin=12V

Vin=10V

OUTPUT CURRENT, IO (A)

EFFICIENCY, η (%)

0246810

Vin=14V

Vin=12V

Vin=10V

OUTPUT CURRENT, IO (A)

Figure 3. Converter Efficiency versus Output Current (Vout = 1.8Vdc).

EFFICIENCY, η (%)

0246810

Vin=14V

Vin=12V

Vin=10V

OUTPUT CURRENT, IO (A)

Figure 6. Converter Efficiency versus Output Current (Vout = 5.0Vdc).

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Page 7

Data Sheet

(V)

October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the Austin Lynx

(A)

INPUT CURRENT, I

7 8 91011121314

Figure 7. Input voltage vs. Input Current

INPUT VOLTAGE, V

(Vout = 3.3Vdc).

Io = 10A

Io=5A

Io=0 A

(V) (200mV/div)

(A) (2A/div) V

OUTPUT CURRENT, OUTPUT VOLTAGE

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

II 12 V SMT modules at 25ºC.

TIME, t (5 μs/div)

(V) (20mV/div)

OUTPUT VOLTAGE

TIME, t (2μs/div)

Figure 8. Typical Output Ripple and Noise

(Vin = 12.0V dc, Vo = 2.5 Vdc, Io=10A).

(V) (20mV/div)

OUTPUT VOLTAGE

TIME, t (2μs/div)

Figure 9. Typical Output Ripple and Noise

(Vin = 12.0V dc, Vo = 5.0 Vdc, Io=10A).

(V) (200mV/div)

(A) (2A/div) V

OUTPUT CURRENT, OUTPUT VOLTAGE

TIME, t (5 μs/div)

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

(V) (100mV/div)

(A) (2A/div) V

OUTPUT CURRENT, OUTPUT VOLTAGE

TIME, t (10μs/div)

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

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Page 8

Data Sheet

(

)

October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the Austin Lynx

(V) (5V/div)

(V) (100mV/div)

(A) (2A/div) V

OUTPUT CURRENT, OUTPUTVOLTAGE

TIME, t (10μs/div)

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

F Polymer Capacitors).

(V) (2V/div) V

OUTPUT VOLTAGE INPUT VOLTAGE

Figure 16. Typical Start-Up with application of Vin with low-ESR polymer capacitors at the output (7x150 μF)

Vin = 12Vdc, Vo = 5.0Vdc, Io = 10A, Co = 1050 μF

II 12 V SMT modules at 25ºC.

TIME, t (2 ms/div)

(V) (5V/div)

On/off

V) (2V/div) V

OUTPUT VOLTAGE On/Off VOLTAGE

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

(2V/div) V

OUTPUT VOLTAGE On/Off VOLTAGE

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

TIME, t (2 ms/div)

Low-ESR external capacitors (Co= 5000μF) (Vin =

12.0Vdc, Vo = 5.0Vdc, Io = 10.0A, Co = 1050μF).

V) (0.5V/div)

OUTPUT VOLTAGE

TIME, t (2 ms/div)

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)

OUTPUT CURRENT,

TIME, t (10ms/div)

Figure 18. Output short circuit Current (Vin = 12.0Vdc, Vo = 0.75Vdc).

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Page 9

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Characteristic Curves (continued)

The following figures provide thermal derating curves for the Austin Lynx

100 LFM

200 LFM

300 LFM

400 LFM

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

AMBIENT TEMPERATURE, TA OC

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

OUTPUT CURRENT, Io (A)

100 LFM

200 LFM

300 LFM

400 LFM

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).

100 L F M

200 LFM

300 LFM

400 LFM

OUTPUT CURRENT, Io (A)

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).

OUTPUT CURRENT, Io (A)

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

II 12 V SMT modules.

100 LFM

200 LFM

300 LFM

400 LFM

20 30 40 50 60 70 80 90

AMBIENT TEMPERATURE, TA OC

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Page 10

Data Sheet October 1, 2009

Austin Lynx

II 12 V SMT Non-Isolated Power Modules:

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Test Configurations

TO OSCILLOSCOPE

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 23. Input Reflected Ripple Current Test Setup.

COPPER STRIP

(+)

1uF .

COM

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.

10uF

SCOPE

GROUND PLANE

Figure 24. Output Ripple and Noise Test Setup.

contact

distribution

contact

VIN(+)

COM

CIN

2x100μF

Tantalum

CURRENT PROBE

VIN(+)

COM

RESISTIVE

LOAD

contactRdistribution

LOAD

Design Considerations

Input Filtering

Austin LynxTM II 12V SMT module should be connected to a low-impedance AC 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 (mVpp) for various outputs with 4x47 µF tantalum capacitors and with 4x22 µF ceramic capacitor (TDK part #: C4532X5R1C226M) at full load.

300

250

200

150

10 0

Input Ripple Voltage (mVp-p)

0123456

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).

Tantalum

Cer ami c

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 measur ement err ors due to soc ket contact resistance.

Figure 25. Output Voltage and Efficiency Test Setup.

. I

Efficiency

VIN. I

x 100 %

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Page 11

Data Sheet October 1, 2009

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Austin Lynx

Design Considerations (continued)

Output Filtering

The Austin Lynx 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.

II 12VSMT module is designed for low

II 12 V SMT Non-Isolated Power Modules:

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 fastacting fuse with a maximum rating of 15A in the positive

input lead

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Page 12

Data Sheet October 1, 2009

Austin Lynx

II 12 V SMT Non-Isolated Power Modules:

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Feature Description

Remote On/Off

Austin LynxTM II 12V SMT power modules feature an On/Off pin for remote On/Off operation. Two On/Off logic options are available in the Austin Lynx 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 27. 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 = V

is 10µA. Applying a logic-low

IN,max

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 V

VIN+

ON/OFF

GND

ON/OFF

IN.

Figure 27. Remote On/Off Implementation.

For negative logic On/Off devices, the circuit configuration is shown is Figure 28. The On/Off pin is pulled high with an external pull-up resistor (typical R = 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.

II 12V series

MODULE

PWM Enable

Q3 CSS

pull-up

VIN+

ON/OFF

GND

pull-up

ON/OFF

MODULE

PWM Enable

Q2 CSS

Figure 28. 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 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 the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restart after it cools down.

, exceeds 125oC (typical), but

ref

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Page 13

Data Sheet October 1, 2009

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Austin Lynx

Feature Descriptions (continued)

Output Voltage Programming

7525.0

−

75.08.1

Rtrim (KΩ)

II 12V can be

⎤

−

⎥ ⎦

⎤ ⎥

⎦

Ω= kRtrim 024.9

Rtrim

LOAD

The output voltage of the Austin Lynx programmed to any voltage from 0.75Vdc to 5.5Vdc by connecting a resistor (shown as Rtrim in Figure 29) 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

⎢

−

⎣

10500

⎡

= 1000

For example, to program the output voltage of the Austin

Lynx

II 12 V module to 1.8 Vdc, Rtrim is calculated is

follows:

10500

⎡

= 1000

Rtrim

⎢

−

⎣

(+)

ON/OFF

GND

(+)

TRIM

Figure 29. Circuit configuration for programming output voltage using an external resistor.

Table 1 provides Rtrim values required for some common output voltages

Table 1

(V)

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

II 12 V SMT Non-Isolated Power Modules:

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

max

= V

o,set

x I

Voltage Margining

Output voltage margining can be implemented in the Austin Lynx

, from the Trim pin to the ground pin for margining-up

the output voltage and by connecting a resistor, R

, from the Trim pin to the Output pin for margining-

down

down. Figure 30 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

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

Figure 30. Circuit Configuration for margining Output voltage.

II modules by connecting a resistor, R

margin-up

for a specific output voltage and % margin.

Rmargin-down

Austin Lynx or Lynx II Series

Trim

Rmargin-up

Rtrim

GND

o,max

margin-

and

LINEAGE POWER 13

Page 14

Data Sheet October 1, 2009

Austin Lynx

II 12 V SMT Non-Isolated Power Modules:

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Feature Descriptions (continued)

Voltage Sequencing

Austin LynxTM II series of modules include a sequencing feature, EZ-SEQUENCE 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 V

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 V 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.

When using the EZ-SEQUENCE 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-SEQUENCE 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-SEQUENCE must be disabled. For additional guidelines on using EZSEQUENCE

feature of Austin LynxTM II, contact the Lineage Power technical representative for preliminary application note on output voltage sequencing using Austin Lynx II series.

IN or leave it unconnected.

IN for positive logic modules) so that

feature to control

feature

Remote Sense

The Austin LynxTM SMT power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense pin (See Figure 31). The voltage between the Sense pin and Vo pin must not exceed 0.5V.

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, 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, connect the Remote Sense pin to the output pin.

contact

distribution

contact

VIN(+)

COM

Sense

COM

Figure 31. Remote sense circuit configuration

contact Rdistribution

LOAD

contact Rdistribution

LINEAGE POWER 14

Page 15

Data Sheet

Air

October 1, 2009

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Austin Lynx

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

33. Note that the airflow is parallel to the short axis of the module as shown in figure 32. The derating data applies to airflow in either direction of the module’s short axis.

Top View

Figure 32. T

The thermal reference point, T specifications is shown in Figure 32. 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 location.

ref

Air Flow

used in the

II 12 V SMT Non-Isolated Power Modules:

25.4_

76.2_

(3.0)

(1.0)

Po w er M o d u le

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

ind Tu nne l

PWBs

8.3_

(0.325)

flow

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

) for airflow

LINEAGE POWER 15

Page 16

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

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

Co-planarity (max): 0.20 [0.008]

Side View

Bottom View

PIN FUNCTION

1 On/Off

2 VIN

3 SEQ

4 GND

5 VOUT

6 Trim

7 Sense

MPS176595

LINEAGE POWER 16

Page 17

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

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.)

LINEAGE POWER 17

Page 18

Data Sheet October 1, 2009

Austin Lynx

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Packaging Details

The Austin LynxTM II 12 V 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”)

LINEAGE POWER 18

Page 19

Data Sheet October 1, 2009

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Austin Lynx

Surface Mount Information

Pick and Place

The Austin LynxTM II 12 V 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 product information such as product code, serial number and the location of manufacture.

C. The label also carries

II 12 V SMT Non-Isolated Power Modules:

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

C. Typically, the eutectic solder melts at 183oC, wets the land, 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

Peak T emp 235oC

Heat zo ne

oCs-1

max 4

Co o ling zo ne

oCs-1

1- 4

Figure 34. 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 II 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

15 0

10 0

REFLOW TEMP (°C)

Soak zo ne 30-240s

Preheat zo ne

oCs-1

max 4

REFLOW TIME (S)

lim

205

above

Figure 35. Reflow Profile for Tin/Lead (Sn/Pb) process.

240

235

230

225

220

215

210

MAX TEMP SOLDER (°C)

205

200

0 102030405060

Figure 36. Time Limit Curve Above 205oC for Tin/Lead (Sn/Pb) process.

LINEAGE POWER 19

Page 20

Data Sheet October 1, 2009

8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

Austin Lynx

Surface Mount Information (continued)

Lead Free Soldering

The –Z version Austin Lynx II 12V 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. 37.

MSL Rating

The Austin Lynx II 12V SMT modules have a MSL rating of 3.

Storage and Handling

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

II 12 V SMT Non-Isolated Power Modules:

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)

Figure 37. 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 20

Page 21

Data Sheet

October 1, 2009

Austin Lynx

8.3 – 14.0 Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current

II 12 V SMT Non-Isolated Power Modules:

Ordering Information

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

Table 2. Device Codes

Input

Device Code

Voltage

Range

ATA010A0X3-SR 8.3 – 14Vdc

ATA010A0X3-SRZ 8.3 – 14Vdc

ATA010A0X43-SR 8.3 – 14Vdc

ATA010A0X43-SRZ 8.3 – 14Vdc

-Z refers to RoHS-compliant versions.

Output

Voltage

0.75 – 5.5Vdc

Output

Current

10 A 93.0% SMT 108987538

10 A 93.0% SMT CC109104675

10 A 93.0% SMT 108988341

10 A 93.0% SMT 108996674

Efficiency

3.3V@ 10A

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 +1-800-526-7 819 (Outsi de U.S.A.: +1-972-244-9428)

www.lineagepower.com e-mail: techs upport1@lineagepower.com

Linea ge Power res erves th e right to make change s to the prod uct(s) or i nformation c ontained 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 any s uch produc t(s) or informati on.

Linea ge Power D C-DC pro ducts are p rotected unde r v ariou s patents. Inf ormation on these patents is av ailable at www. lineagepo wer.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 21

Document No: DS03-106 ver. 1.27

PDF name: lynx_II_12v_smt_ds.pdf

GE Industrial Solutions Austin Lynx II 12 V SMT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual