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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5Vdc - 5.5Vdc input; 0.8 to 3.63Vdc; 30A Output Current 6.0Vdc - 14Vdc input; 0.8 to 3.63Vdc Output; 20/30A Output Current
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 30A of output current High efficiency: 92% @ 3.3V full load (12Vin) Available in two input voltage ranges ATH: 4.5 to 5.5Vdc ATS: 6 to 14Vdc * Output voltage programmable from ATH: 0.8 to 3.63Vdc ATS030: 0.8 to 2.75Vdc ATS020: 0.8 to 3.63Vdc Small size and low profile: 33.0 mm x 9.1 mm x 13.5 mm (1.30 in. x 0.36 in. x 0.53 in.) Monotonic start-up into pre-biased output Output voltage sequencing (EZ-SEQUENCE ) Remote On/Off Remote Sense Over current and Over temperature protection -P option: Paralleling with active current share -H option: Additional GND pins for improved thermal derating Wide operating temperature range (-40C to 85C) UL* 60950 Recognized, CSA C22.2 No. 60950-00 Certified, and VDE 0805 (EN60950-1 3rd edition) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities
TM
RoHS Compliant
Applications
Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment
Description
The Austin MegaLynx series SMT power modules are non-isolated DC-DC converters in an industry standard package that can deliver up to 30A of output current with a full load efficiency of 92% at 2.5Vdc output voltage (VIN = 12Vdc). The ATH series of modules operate off an input voltage from 4.5 to 5.5Vdc and provide an output voltage that is programmable from 0.8 to 3.63Vdc, while the ATS series of modules have an input voltage range from 6 to 14V and provide a programmable output voltage ranging from 0.8 to 3.63Vdc. Both series have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple modules on the board. Additional features include remote On/Off, adjustable output voltage, remote sense, over current, over temperature protection and active current sharing between modules.
* 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: DS06-109 ver. 1.09 PDF Name: austin_megalynx_smt.pdf
Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
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 Input Voltage Continuous ATH ATS Sequencing pin voltage ATH ATS Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature All Tstg -55 125 C All VIN VIN VsEQ VsEQ TA -0.3 -0.3 -0.3 -0.3 -40 6 15 6 15 85 Vdc Vdc Vdc Vdc C Device Symbol Min Max Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Operating Input Voltage Device ATH ATS Maximum Input Current (VIN= VIN,min , VO= VO,set, IO=IO, max) ATH ATS020 ATS030 Inrush Transient Input Reflected Ripple Current, peak-topeak (5Hz to 20MHz, 1H source impedance; VIN=6.0V to 14.0V, IO= IOmax ; See Figure 1) Input Ripple Rejection (120Hz) All All All Symbol VIN VIN IIN,max IIN,max IIN,max It 100 50
2
Min 4.5 6.0
Typ 5.0 12
Max 5.5 14 27 13.3 15.8 1
Unit Vdc Vdc Adc Adc Adc As mAp-p dB
2
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Electrical Specifications (continued)
Parameter Output Voltage Set-point (VIN=VIN,nom, IO=IO, nom, Tref=25C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor ATS030 ATS020 ATH030* * VO 3.3V only possible for VIN 4.75V Output Regulation Line (VIN=VIN, min to VIN, max) Load (IO=IO, min to IO, max) Temperature (Tref=TA, min to TA, max) Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max COUT = 0.1F // 10 F ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) Peak-to-Peak (5Hz to 20MHz bandwidth) Peak-to-Peak (5Hz to 20MHz bandwidth) External Capacitance ESR 1 m ESR 10 m Output Current (VIN = 4.5 to 5.5Vdc) (VIN = 6 to 14Vdc) (VIN = 6 to 14Vdc) Output Current Limit Inception (Hiccup Mode) Output Short-Circuit Current (VO250mV) ( Hiccup Mode ) Efficiency ATH Series: VIN=5Vdc, TA=25C IO=IO, max , VO= VO,set VO,set = 0.8dc VO,set = 1.2Vdc VO,set = 1.5Vdc VO,set = 1.8Vdc VO,set = 2.5Vdc VO,set = 3.3Vdc ATS Series: VIN=12Vdc, TA=25C IO=IO, max , VO= VO,set VO,set = 0.8dc VO,set = 1.2Vdc VO,set = 1.8Vdc VO,set = 2.5Vdc VO,set = 3.3Vdc Switching Frequency, Fixed All fsw 82.2 85.8 89.5 89.2 92.0 92.2 77.5 83.5 86.5 91.3 92.1 300 % % % % % % % % % % % kHz ATH Series ATS030 Series ATS020 Series All All Io Io Io IO, lim IO, s/c 0 0 0 105 140 3.5 30 30 20 160 Adc Adc Adc % Iomax Adc All All CO, max CO, max 0 0 2,000 10,000 F F Vo 2.5V 2.5V < Vo 3.63V Vo > 3.63V 50 75 100 mVpk-pk mVpk-pk mVpk-pk All All All 0.5 20 40 1 mV mV % VO, set 0.8 0.8 0.8 2.75 3.63 3.63 Vdc Vdc Vdc All VO, set -5.0 +3.0 % VO, set Device All Symbol VO, set Min -1.5 Typ Max +1.5 Unit % VO, set
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Electrical Specifications (continued)
Parameter Dynamic Load Response (dIO/dt=5A/s; VIN=12V, Vo=3.3V ; TA=25C) Load Change from Io= 50% to 100% of IO,max; No external output capacitors Peak Deviation Settling Time (VO<10% peak deviation) (dIO/dt=5A/s; VIN=VIN, nom; TA=25C) Load Change from IO= 100% to 50%of IO, max: No external output capacitors Peak Deviation Settling Time (VO<10% peak deviation) (dIO/dt=5A/s; VIN=VIN, nom; TA=25C) Load Change from Io= 50% to 100% of Io,max; 2x150 F polymer capacitor Peak Deviation Settling Time (VO<10% peak deviation) (dIO/dt=5A/s; VIN=VIN, nom; TA=25C) Load Change from Io= 100% to 50%of IO,max: 2x150 F polymer capacitor Peak Deviation Settling Time (VO<10% peak deviation) Device Symbol Min Typ Max Unit
All All
Vpk ts

350 25
mV s
All All
Vpk ts

350 25
mV s
All All
Vpk ts

250 40

mV s
All All
Vpk ts

250 40

mV s
General Specifications
Parameter Min Typ 3,016,040 Max Unit
Calculated MTBF (VIN=12V, VO=3.3Vdc, IO= 0.8IO, max, TA=40C) Per Telecordia Method Weight
Hours g (oz.)
6.2 (0.22)
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information.
Parameter On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Logic High (Module OFF) Input High Current Input High Voltage Logic Low (Module ON) Input Low Current Input Low Voltage Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , VO to within 1% of steady state) Case 1: On/Off input is enabled and then input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) Output voltage overshoot IO = IO, max; VIN, min - VIN, max, TA = 25 C Remote Sense Range Over temperature Protection (See Thermal Consideration section) Sequencing Slew rate capability (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Sequencing Delay time (Delay from VIN, min to application of voltage on SEQ pin) Tracking Accuracy Power-up (2V/ms) Power-down (1V/ms) (VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo) Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold Turn-on Threshold Turn-off Threshold Forced Load Share Accuracy Number of units in Parallel ATH ATH ATS ATS -P -P 4.3 3.9 5.5 5.0 10 5 Vdc Vdc Vdc Vdc % Io All All TsEQ-delay VSEQ -Vo VSEQ -Vo 10 100 200 200 400 msec mV mV All dVSEQ/dt -- 2 V/msec All All Tref 125 0.5 V C
o
Device
Symbol
Min
Typ
Max
Unit
All All All All
IIH VIH IIL VIL
0.5 3.0 -0.3

3.3 VIN, max 200 1.2
mA V A V
All
Tdelay
2.5
5
msec
All
Tdelay
2.5
5
msec
All
Trise
2
10 3.0
msec % VO, set
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATS030A0X3-SR & -SRH (0.8V, 30A) at 25oC.
90 Vin = 6 V
35 30
85
OUTPUT CURRENT, Io (A)
EFFICIENCY, (%)
25 20 15 10 5 0 35 45
0.5m/s (100LFM) 1m/s (200LFM)
80 Vin = 12 V 75 Vin = 14 V
1.5m/s (300LFM)
2.5m/s (500LFM)
2.0m/s (400LFM)
70 0 5 10 15 20 25 30
55
65
O
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SRH).
35
OUTPUT CURRENT, Io (A)
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT VOLTAGE
VO (V) (20mV/div)
NC
0.5m/s (100LFM) 1m/s (200LFM)
1.5m/s (300LFM)
2m/s (400LFM) 2.5m/s (500LFM)
75
85
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT VOLTAGE
Figure 5. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SR).
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (100mV/div)
OUTPUT CURRENT,
IO (A) (5Adiv)
VIN (V) (5V/div)
VO (V) (0.5V/div)
TIME, t (20s /div)
TIME, t (5ms/div)
Figure 3. Transient Response to Dynamic Load Change from 0% to 50% to 0% of full load with VIN =12V.
Figure 6. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATS030A0X3-SR and -SRH (1.25V, 30A) at 25oC.
95 Vin = 6 V 90
EFFICIENCY, (%)
85 Vin = 14 V 80 Vin = 12 V
75
70 0 5 10 15 20 25 30
OUTPUT CURRENT, IO (A)
Figure 7. Converter Efficiency versus Output Current.
35 30
OUTPUT CURRENT, Io (A)
25 20 15 10 5 0 35 45 55 65
O
0.5m/s (100LFM)
1m/s (200LFM)
1.5m/s (300LFM)
2.0m/s (400LFM) 2.5m/s (500LFM)
75
85
AMBIENT TEMPERATURE, TA C
Figure 8. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SRH).
35 30
OUTPUT CURRENT, Io (A)
25 20 15 10 5 0 35 45 55 65
O
NC
0.5m/s (100LFM) 1m/s (200LFM)
1.5m/s (300LFM)
2m/s (400LFM) 2.5m/s (500LFM)
75
85
AMBIENT TEMPERATURE, TA C
Figure 9. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SR).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATS030A0X3-SR and -SRH (1.8V, 30A) at 25oC.
95 Vin = 6 V
35 30
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
25 20 15 10 5 0 35
85 Vin = 12 V 80 Vin = 14 V
0.5m/s (100LFM)
1m/s (200LFM)
1.5m/s (300LFM)
2m/s (400LFM)
2.5m/s (500LFM)
75
70 0 5 10 15 20 25 30
45
55
65
O
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 10. Converter Efficiency versus Output Current.
Figure 13. Output Current Derating versus Ambient Temperature and Airflow (ATS030A0X3-SRH).
35
OUTPUT CURRENT, Io (A)
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT VOLTAGE
VO (V) (20mV/div)
NC
0.5m/s (100LFM) 1m/s (200LFM)
1.5m/s (300LFM)
2m/s (400LFM) 2.5m/s (500LFM)
75
85
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 11. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT VOLTAGE VO (V) (100mV/div)
Figure 14. Output Current Derating versus Ambient Temperature and Airflow (ATS030A0X3-SR).
OUTPUT VOLTAGE INPUT VOLTAGE
OUTPUT CURRENT,
IO (A) (5A/div)
VIN (V) (5V/div)
VO (V) (1V/div)
TIME, t (20s /div)
TIME, t (5ms/div)
Figure 12. Transient Response to Dynamic Load Change from 0% to 50% to 0% of full load with VIN =12V.
Figure 15. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATS030A0X3-SR and -SRH (2.5V, 30A) at 25oC.
100
95
EFFICIENCY, (%)
90 Vin = 12 V Vin = 6 V 80 Vin = 14 V
85
75
70 0 5 10 15 20 25 30
OUTPUT CURRENT, IO (A)
Figure 16. Converter Efficiency versus Output Current.
35 30
OUTPUT CURRENT, Io (A)
25 20 15 10 5 0 35 45 55 65
O
NC
0.5m/s (100LFM) 1m/s (200LFM)
1.5m/s (300LFM) 2m/s (400LFM) 2.5m/s (500LFM)
75
85
AMBIENT TEMPERATURE, TA C
Figure 17. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SRH).
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT CURRENT, Io (A)
NC
0.5m/s (100LFM) 1m/s (200LFM)
1.5m/s (300LFM) 2m/s (400LFM) 2.5m/s (500LFM)
75
85
AMBIENT TEMPERATURE, TA C
Figure 18. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SR).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATS020A0X3-SR and -SRH (3.3V, 20A) at 25oC.
100 95
25
90 85 80 Vin = 6 V 75 70 0 5 10 15 20 Vin = 14 V
OUTPUT CURRENT, Io (A)
20 15
EFFICIENCY, (%)
NC
0.5m/s (100LFM) 1m/s (200LFM)
Vin = 12 V
1.5m/s (300LFM) 2.5m/s 2m/s (500LFM) (400LFM)
10 5
0 30 40 50 60
O
70
80
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 19. Converter Efficiency versus Output Current.
Figure 22. Output Current Derating versus Ambient Temperature and Airflow (ATS020A0X3-SRH).
25
OUTPUT CURRENT, Io (A)
20 15
NC 0.5m/s (100LFM) 1m/s (200LFM)
OUTPUT VOLTAGE
VO (V) (20mV/div)
10 5 0 30 40
1.5m/s (300LFM)
2m/s (400LFM) 2.5m/s (500LFM)
50
60
O
70
80
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 20. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT VOLTAGE VO (V) (100mV/div)
Figure 23. Output Current Derating versus Ambient Temperature and Airflow (ATS020A0X3-SR).
OUTPUT VOLTAGE INPUT VOLTAGE
OUTPUT CURRENT,
VIN (V) (5V/div)
IO (A) (5A/div)
VO (V) (1V/div)
TIME, t (20s /div)
TIME, t (5ms/div)
Figure 21. Transient Response to Dynamic Load Change from 0% to 50% of full load with VIN =12V.
Figure 24. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATH030A0X3-SR and -SRH (0.8V, 30A) at 25oC.
95
35 30
90
OUTPUT CURRENT, Io (A)
EFFICIENCY, (%)
25 20 15 10 5 0 35 45
0.5m/s (100LFM)
1.5m/s (300LFM)
85
Vin = 4.5 V Vin = 5.0 V
1m/s (200LFM)
2.5m/s (500LFM) 2.0m/s (400LFM)
80 Vin = 5.5 V 75 0 5 10 15 20 25 30
55
65
O
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 25. Converter Efficiency versus Output Current.
Figure 28. Derating Output Current versus Ambient Temperature and Airflow (ATS030A0X3-SRH).
35
OUTPUT CURRENT, Io (A)
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT VOLTAGE
VO (V) (20mV/div)
0.5m/s (100LFM)
1.5m/s (300LFM)
1m/s (200LFM)
2.5m/s (500LFM) 2.0m/s (400LFM)
75
85
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 26. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT, OUTPUT VOLTAGE
Figure 29. Derating Output Current versus Ambient Temperature and Airflow (ATH030A0X3-SR).
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (5A/div)
VIN (V) (2V/div)
VO (V) (1V/div)
TIME, t (10s /div)
TIME, t (2ms/div)
Figure 27. Transient Response to Dynamic Load Change from 0% to 50% of full load with VIN =5V.
Figure 30. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATH030A0X3-SR and -SRH (1.8V, 30A) at 25oC.
95
35 30
90
Vin = 4.5 V Vin = 5.0 V
OUTPUT CURRENT, Io (A)
EFFICIENCY, (%)
25 20 15 10 5 0 35 45 55
0.5m/s 100LFM 1m/s 200LFM
1.5m/s 300LFM 2m/s 400LFM
2.5m/s 500LFM
85 Vin = 5.5 V 80
75 0 5 10 15 20 25 30
65
O
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 31. Converter Efficiency versus Output Current.
Figure 34. Derating Output Current versus Ambient Temperature and Airflow (ATH030A0X3-SRH).
35
OUTPUT CURRENT, Io (A)
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT VOLTAGE
VO (V) (20mV/div)
0.5m/s (100LFM)
1m/s (200LFM)
1.5m/s (300LFM)
2m/s 2.5m/s (400LFM) (500LFM)
75
85
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 32. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
Figure 35. Derating Output Current versus Ambient Temperature and Airflow (ATH030A0X3-SR).
OUTPUT CURRENT, OUTPUT VOLTAGE
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (5A/div)
VIN (V) (2V/div)
VO (V) (0.5V/div)
TIME, t (10s /div)
TIME, t (2ms/div)
Figure 33. Transient Response to Dynamic Load Change from 0% to 50% of full load with VIN =5V.
Figure 36. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Characteristic Curves
The following figures provide typical characteristics for the ATH030A0X3-SR and -SRH (3.3V, 30A) at 25oC.
100
35 30
OUTPUT CURRENT, Io (A)
95
EFFICIENCY, (%)
Vin = 4.5 V 90 Vin = 5.0 V
25 20 15 10 5 0 35 45 55 65
O
0.5m/s (100LFM)
1m/s (200LFM)
85 Vin = 5.5 V
1.5m/s (300LFM)
2.5m/s 2m/s (500LFM) (400LFM)
80
75 0 5 10 15 20 25 30
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 37. Converter Efficiency versus Output Current.
Figure 40. Derating Output Current versus Ambient Temperature and Airflow (ATH030A0X3-SRH).
35
OUTPUT CURRENT, Io (A)
30 25 20 15 10 5 0 35 45 55 65
O
OUTPUT VOLTAGE
VO (V) (20mV/div)
0.5m/s 100LFM
1m/s 200LFM
1.5m/s 300LFM
2m/s 400LFM
2.5m/s 500LFM
75
85
TIME, t (1s/div)
AMBIENT TEMPERATURE, TA C
Figure 38. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
Figure 41. Derating Output Current versus Ambient Temperature and Airflow (ATH030A0X3-SR).
OUTPUT CURRENT, OUTPUT VOLTAGE
VO (V) (100mV/div)
OUTPUT VOLTAGE INPUT VOLTAGE
IO (A) (10A/div)
VIN (V) (2V/div)
VO (V) (1V/div)
TIME, t (10s /div)
TIME, t (2ms/div)
Figure 39. Transient Response to Dynamic Load Change from 0% to 50% of full load with VIN =5V.
Figure 42. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Test Configurations
TO OSCILLOSCOPE LTEST 1H VIN(+) CURRENT PROBE
Design Considerations
The Austin MegaLynxTM module should be connected to a low-impedance source. A highly inductive source can affect the stability of the module. An input capacitor 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 ceramic capacitors are recommended at the input of the module. Figure 46 shows the input ripple voltage for various output voltages at 30A of load current with 1x22 F or 2x22 F ceramic capacitors and an input of 12V. Figure 47 shows data for the 5Vin case, with 2x22F and 2x47F of ceramic capacitors at the input, and for a load current of 30A.
350
BATTERY
CS
220F
CIN Min 150F
E.S.R.<0.1 @ 20C 100kHz
COM
NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1H. Capacitor CS offsets possible battery impedance. Measure current as shown above.
Input Ripple Voltage (mVp-p)
Figure 43. Input Reflected Ripple Current Test Setup.
COPPER STRIP VO (+) 1uF COM . 10uF SCOPE RESISTIVE LOAD
300 250 200 150 100 50 0 0.5
1 x 22uF 2 x 22uF
GROUND PLANE 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.
1
1.5
2
2.5
Figure 44. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact VIN(+) VO
Rcontact
Rdistribution
Output Voltage (Vdc) Figure 46. Input ripple voltage for various output voltages with 1x22 F or 2x22 F ceramic capacitors at the input (30A load). Input voltage is 12V.
120
Input Ripple Voltage (mVp-p)
VIN
VO
RLOAD
100 80 60 40 2 x 22uF 20 0 0.5 1 1.5 2 2.5 3 3.5 2 x 47uF
Rdistribution
Rcontact COM COM
Rcontact
Rdistribution
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 45. Output Voltage and Efficiency Test Setup.
VO. IO Efficiency = VIN. IIN x 100 %
Output Voltage (Vdc) Figure 47. Input ripple voltage in mV, p-p for various output voltages with 2x22 F or 2x47 F ceramic capacitors at the input (30A load). Input voltage is 5V.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
25
Output Filtering
The Austin MegaLynxTM modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 F ceramic and 10 F ceramic 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. Figure 48 shows the output ripple voltage for various output voltages at 30A of load current with different external capacitance values and an input of 12V. Figure 49 shows data for the 5Vin case for various output voltages at 30A of load current with different external capacitance values. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table.
110 100 90 80 Ripple(mVp-p) 70 60 50 40 30 20 10 0 0.5 1 1.5 Output Voltage(Volts) 2 2.5 1x10uF External Cap 1x47uF External Cap 2x47uF External Cap 4x47uF External Cap
Ripple(mVp-p)
15
1x10uF External Cap 1x47uF External Cap 2x47uF External Cap 4x47uF External Cap
5 0.5 1 1.5 Output Voltage(Volts) 2 2.5
Figure 49. Output ripple voltage for various output voltages with external 1x10 F, 1x47 F, 2x47 F or 4x47 F ceramic capacitors at the output (30A load). Input voltage is 5V.
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, CSA C22.2 No. rd 60950-00, EN60950 (VDE 0850) (IEC60950, 3 edition) 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.
Feature Descriptions
Remote On/Off
The Austin MegaLynx SMT power modules feature a On/Off pin for remote On/Off operation. If not using the On/Off pin, connect the pin to ground (the module will be ON). The On/Off signal (Von/off) is referenced to ground. Circuit configuration for remote On/Off operation of the module using the On/Off pin is shown in Figure 50. During a Logic High on the On/Off pin (transistor Q1 is OFF), the module remains OFF. The external resistor R1 should be chosen to maintain 3.0V minimum on the On/Off pin to ensure that the module is OFF when transistor Q1 is in the OFF state. Suitable values for R1 are 4.7K for input voltage of 12V and 3K for 5Vin. During Logic-Low when Q1 is turned ON, the module is turned ON.
TM
Figure 48. Output ripple voltage for various output voltages with external 1x10 F, 1x47 F, 2x47 F or 4x47 F ceramic capacitors at the output (30A load). Input voltage is 12V.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
The ATS030A0X3-62SRHZ and ATS030A0X362SRPHZ modules have a higher value resistor of 100K connected internally between the gate and source of the internal FET used to control the PWM Enable line. The On/Off pin can also be used to synchronize the output voltage start-up and shutdown of multiple modules in parallel. By connecting On/Off pins of multiple modules, the output start-up can be synchronized (please refer to characterization curves). When On/Off pins are connected together, all modules will shutdown if any one of the modules gets disabled due to undervoltage lockout or over temperature protection.
R d istrib u tio n
R co n ta c t
V IN (+ ) VO S e n se
R c o nta ct
R d istrib utio n
R LO AD
R d istrib u tio n
R co n ta c t
COM COM
R c o nta ct
R d istrib utio n
Figure 51. Effective Circuit Configuration for Remote Sense operation.
Over Current 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 average output current during hiccup is 10% IO, max.
VIN + R1
MODULE
Therm al SD
I ON/OFF ON /OFF + VON/OFF Q1
1K
PW M Enable
Over Temperature Protection
100K 10K
GN D
_
Figure 50. Remote On/Off Implementation using ON/OFF .
To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold of 125oC is exceeded at the thermal reference point Tref. The thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart.
Remote Sense
The Austin MegaLynxTM 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 51). 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 output of the module.
Input Under Voltage Lockout
At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold.
Output Voltage Programming
The output voltage of the Austin MegaLynx can be programmed to any voltage from 0.8dc to 3.63Vdc by connecting a resistor (shown as Rtrim in Figure 52) between Trim and GND pins of the module. Without an external resistor between Trim and GND pins, the output of the module will be 0.8Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following equation:
TM
1200 Rtrim = - 100 Vo - 0.80
Rtrim is the external resistor in
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Vo Rmargin-down Austin Lynx or Lynx II Series Q2 Trim Rmargin-up Rtrim
Vo is the desired output voltage By using a 0.5% tolerance trim resistor with a TC of 100ppm, a set point tolerance of 1.5% can be achieved as specified in the electrical specification. Table 1 provides Rtrim values required for some common output voltages. 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.
V IN(+)
V O(+)
GND
Q1
ON/OFF
TRIM
LOAD
Figure 53. Circuit Configuration for margining Output voltage.
Rtrim
GND
Voltage Sequencing
The Austin MegaLynxTM series of modules include a sequencing feature 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 leave the SEQ pin unconnected or tied to VIN. For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is or tied to GND so that the module is ON by default. After applying input voltage to the module, a delay of 10msec minimum is required before applying voltage on the SEQ pin. During this delay time, the SEQ pin should be kept at a voltage of 50mV ( 20 mV). After the 10msec delay, the voltage applied to the SEQ pin is allowed to vary and the output voltage of the module will track this voltage on a one-to-one volt basis until the output reaches the set-point voltage. To initiate simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. The output voltages of the modules track the sequence pin voltage when it falls below their set-point voltages. A valid input voltage must be maintained until the tracking and output voltages reach zero to ensure a controlled shutdown of the modules. For a more detailed description of sequencing, please refer to Application Note AN04-008 titled "Guidelines for Sequencing of Multiple Modules". When using the EZ-SEQUENCETM feature to control start-up of the module, pre-bias immunity
Figure 52. Circuit configuration to program output voltage using an external resistor.
Table 1
VO, set (V) 0.8 1.0 1.2 1.5 1.8 2.5 3.3 Rtrim (K) Open 5.900 2.900 1.614 1.100 0.606 0.380
Voltage Margining
Output voltage margining can be implemented in the Austin MegaLynxTM modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 53 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 local Lineage Power technical representative for additional details.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
converters enabled and disabled using the on/off pin. * The share bus is not designed for redundant operation and the system will be non-functional upon failure of one of the unit when multiple units are in parallel. In particular, if one of the converters shuts down during operation, the other converters may also shut down due to their outputs hitting current limit. In such a situation, unless a coordinated restart is ensured, the system may never properly restart since different converters will try to restart at different times causing an overload condition and subsequent shutdown. This situation can be avoided by having an external output voltage monitor circuit that detects a shutdown condition and forces all converters to shut down and restart together.
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 EZTM SEQUENCE feature must be disabled.
Active Load Sharing (-P Option)
For additional power requirements, the Austin MegaLynx series power module is also available with a parallel option. Up to five modules can be configured, in parallel, with active load sharing. Good layout techniques should be observed when using multiple units in parallel. To implement forced load sharing, the following connections should be made: * The share pins of all units in parallel must be connected together. The path of these connections should be as direct as possible. All remote-sense pins should be connected to the power bus at the same point, i.e., connect all the SENSE(+) pins to the (+) side of the bus. Close proximity and directness are necessary for good noise immunity
*
Some special considerations apply for design of converters in parallel operation: * When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation and avoid the likelihood of a converter shutting off due to a current overload, the total capacity of the paralleled system should be no more than 75% of the sum of the individual converters. As an example, for a system of four ATS030A0X3-SR converters the parallel, the total current drawn should be less that 75% of (4 x 30A) , i.e. less than 90A. All modules should be turned on and off together. This is so that all modules come up at the same time avoiding the problem of one converter sourcing current into the other leading to an overcurrent trip condition. To ensure that all modules come up simultaneously, the on/off pins of all paralleled converters should be tied together and the
*
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
The thermal reference points, Tref used in the specifications are shown in Figure 56. For reliable operation the temperatures at these points 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 BoardMounted Power Modules" for a detailed discussion of thermal aspects including maximum device temperatures.
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 54. Note that the airflow is parallel to the short axis of the module as shown in Figure 55. The derating data applies to airflow in either direction of the module's long axis.
25.4_ (1.0)
Wind Tunnel PWBs
Power Module
Figure 55. Airflow direction for thermal testing.
76.2_ (3.0)
x
12.7_ (0.50)
Probe Location for measuring airflow and ambient temperature
Air flow
Figure 54. Thermal Test Setup.
Figure 56. Tref Temperature measurement location.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Mechanical Outline of Module (ATH030A0X3-SRPH/ATS030/020A0X3-SRPH)
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.)
Note: For the ATH030A0X3-SRH and ATS030A0X3-SRH modules, the SHARE pin is omitted since these modules are not capable of being paralleled.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Recommended Pad Layout (ATH030A0X3-SRPH/ATS030/020A0X3-SRPH)
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.)
Pin 8 Pin 10
PIN 1 2 3 4 5
FUNCTION On/Off VIN SEQ GND VOUT
PIN 6 7 8 9 10
FUNCTION Trim Sense GND SHARE GND
Note: For the ATH030A0X3-SRH and ATS030A0X3-SRH modules, the SHARE pin is omitted since these modules are not capable of being paralleled.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Mechanical Outline of Module (ATH030A0X3-SRP/ATS030/020A0X3-SRP)
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.)
Note: For the ATH030A0X3-SR and ATS030A0X3-SR modules, the SHARE pin is omitted since these modules are not capable of being paralleled.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Recommended Pad Layout (ATH030A0X3-SRP/ATS030/020A0X3-SRP)
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.)
PIN 1 2 3 4 5
FUNCTION On/Off VIN SEQ GND VOUT
PIN 6 7 8 9 10
FUNCTION Trim Sense No Pin Share No Pin
Note: For the ATH030A0X3-SR and ATS030A0X3-SR modules, the SHARE pin is omitted since these
modules are not capable of being paralleled.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Packaging Details
The Austin MegaLynxTM SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of 200 modules per reel.
All Dimensions are in millimeters and (in inches).
Reel Dimensions
Outside diameter: Inside diameter: Tape Width: 330.2 (13.0) 177.8 (7.0) 44.0 (1.73)
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than 235oC. 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.
Surface Mount Information
Pick and Place
The Austin MegaLynx 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 o temperatures of up to 300 C. The label also carries product information such as product code, serial number and location of manufacture.
TM
300
P eak Temp 235oC
250
REFLOW TEMP (C)
200
Heat zo ne max 4oCs -1
Co o ling zo ne 1 oCs -1 -4
150
100
So ak zo ne 30-240s P reheat zo ne max 4oCs -1
Tlim above 205oC
50
Figure 57. Pick and Place Location.
0
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 inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 5 mm max.
REFLOW TIME (S)
Figure 58. Reflow Profile for Tin/Lead (Sn/Pb) process.
240 235
MAX TEMP SOLDER (C)
230 225 220 215 210 205 200 0 10 20 30 40 50 60
Tin Lead Soldering
The Austin MegaLynx SMT power modules are lead free modules and can be soldered either in a leadfree solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability.
TM
Figure 59. Time Limit Curve Above 205oC Reflow for Tin Lead (Sn/Pb) process.
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Modules: Soldering and Cleaning Application Note (AN04-001).
300
Surface Mount Information (continued)
Lead Free Soldering
The -Z version MegaLynx 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. 60.
Per J-STD-020 Rev. C Peak Temp 260C
250 Cooling Zone
Reflow Temp (C)
200 * Min. Time Above 235C 15 Seconds Heating Zone 1C/Second *Time Above 217C 60 Seconds
150
100
50
0
Reflow Time (Seconds)
Figure 60. Recommended linear reflow profile using Sn/Ag/Cu solder
MSL Rating
The Austin MegaLynxTM SMT modules have a MSL rating of 2.
Storage and Handling
The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of <= 30C 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
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Ordering Information
Table 2. Device Codes
Product codes ATH030A0X3-SR ATH030A0X3-SRZ ATH030A0X3-SRH ATH030A0X3-SRHZ ATH030A0X3-SRPH ATH030A0X3-SRPHZ ATS030A0X3-SR ATS030A0X3-SRZ ATS030A0X3-SRH ATS030A0X3-SRHZ ATS030A0X3-SRPH ATS030A0X3-SRPHZ ATS020A0X3-SR ATS020A0X3-SRH ATS020A0X3-SRPH ATS020A0X3-SRZ ATS020A0X3-SRHZ ATS020A0X3-SRPHZ ATS030A0X3-62SRHZ* ATS030A0X3-62SRPHZ* ATS030A0X3-42SRPHZ* Input Voltage 4.5 - 5.5Vdc 4.5 - 5.5Vdc 4.5 - 5.5Vdc 4.5 - 5.5Vdc 4.5 - 5.5Vdc 4.5 - 5.5Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc 6.0 - 14Vdc Output Voltage 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 3.63Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc 0.8 - 2.75Vdc Output Current 30A 30A 30A 30A 30A 30A 30A 30A 30A 30A 30A 30A 20A 20A 20A 20A 20A 20A 30A 30A 30A On/Off Logic Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Connector Type SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT Comcodes 108996625 CC109109550 CC109102340 CC109109567 108996633 CC109109583 108996591 CC109109591 108996600 CC109109600 108996617 CC109105285 CC109132544 CC109132552 CC109132560 CC109132577 CC109132585 CC109132593 CC109139457 CC109140951 CC109145471
* Special codes, consult factory before ordering
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Data Sheet June 3, 2009
Austin MegaLynxTM SMT: Non-Isolated DC-DC Power Modules: 4.5 - 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Table 3. Device Options
Option Current Share 2 Extra ground pins RoHS Compliant Device Code Suffix -P -H -Z
Asia-Pacific Headquarters Tel: +65 6416 4283 Europe, Middle-East and Africa Headquarters Tel: +49 89 6089 286 India Headquarters Tel: +91 80 28411633
World Wide Headquarters Lineage Power Corporation 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 (Outside U.S.A.: +1-972-284-2626) www.lineagepower.com e-mail: techsupport1@lineagepower.com
Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. (c) 2008 Lineage Power Corporation, (Mesquite, Texas) All International Rights Reserved.
LINEAGE POWER
28 Document No: DS06-109 ver. 1.09 PDF Name: austin_megalynx_smt.pdf

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