ATM020A0X3-SRZ [LINEAGEPOWER]
2.4 - 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current; 2.4 - 3.63Vdc输入; 0.75Vdc到2.0Vdc输出; 20A的输出电流
| 型号： | ATM020A0X3-SRZ |
| 厂家： | 
LINEAGE POWER CORPORATION |
| 描述： | 2.4 - 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current |
| 文件： | 总21页 (文件大小：762K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
June 6, 2008
ATM020A0X3-SR, Austin SuperLynx IITM SMT Non-isolated Power Module:
2.4Vdc – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A Output Current
Features
RoHS Compliant
Compliant to RoHS EU Directive 2002/95/EC
Compatible in a Pb-free or SnPb reflow environment
Flexible output voltage sequencing EZ-SEQUENCE
Delivers up to 20A of output current
High efficiency – 89% at 1.8V full load (VIN = 2.4V)
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)
EZ-SEQUENCETM
Low output ripple and noise
High Reliability:
Calculated MTBF > 11.9 M hours at 25oC Full-load
Output voltage programmable from 0.75 Vdc to
2.0Vdc via external resistor
Applications
Distributed power architectures
Line Regulation: 0.3% (typical)
Load Regulation: 0.4% (typical)
Temperature Regulation: 0.4% (typical)
Remote On/Off
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Remote Sense
Output overcurrent protection (non-latching)
Over temperature protection
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
Description
ATM020A0X3-SR belongs to the Austin SuperLynx IITM SMT (surface mount technology) power module product
families that are non-isolated dc-dc converters delivering up to 20A of output current with full load efficiency of 89%
at 1.8V output. These modules provide a precisely regulated output voltage programmable via external resistor
from 0.75Vdc to 2.0Vdc over a wide range of input voltage (VIN = 2.4 – 3.63Vdc). Austin SuperLynx IITM has a
sequencing feature, EZ-SEQUENCETM that enable designers to implement simultaneous or ratiometric startup of
multiple rails on 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,
programmable output voltage, over current and over temperature protection.
*
UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
†
‡
** ISO is a registered trademark of the International Organization of Standards
Document No: DS06-110 ver. 1.81
PDF name: atm020a0x3_sr.pdf
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A 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
4.0
Vdc
Continuous
Sequencing Voltage
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
All
VSEQ
TA
-0.3
-40
ViN, Max
85
Vdc
°C
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 ≤ VIN – 0.5V
VIN
2.4
3.63
20.0
Vdc
Adc
⎯
Maximum Input Current
All
IIN,max
(VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc)
Input No Load Current
VO,set = 0.75Vdc
VO,set = 1.8Vdc
All
IIN,No load
IIN,No load
IIN,stand-by
80
110
1.5
mA
mA
mA
(VIN = 2.4Vdc, IO = 0, module enabled)
Input Stand-by Current
(VIN = 2.4Vdc, module disabled)
Inrush Transient
All
All
All
I2t
0.1
A2s
mAp-p
dB
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN, min to
100
30
VIN, max, IO= IOmax ; See Test configuration section)
Input Ripple Rejection (120Hz)
CAUTION: This power module is not internally fused.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being
part of complex power architecture. To preserve maximum flexibility, internal fusing is not included. This power
module meets all safety agency requirements without presence of an input fuse. However, to achieve maximum
safety and system protection, an input line fuse may be used. Based on the information provided in this data sheet
on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the
fuse manufacturer’s data sheet for further information.
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point
All
VO, set
–2.0
+2.0
% VO, set
⎯
(VIN=IN, min, IO=IO, max, TA=25°C)
Output Voltage
All
All
VO, set
–3%
+3%
2.0
% VO, set
⎯
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range
VO
0.7525
Vdc
Selected by an external resistor
Output Regulation
Line (VIN=VIN, min to VIN, max
Load (IO=IO, min to IO, max
Temperature (Tref=TA, min to TA, max
)
All
All
All
0.3
0.4
0.4
% VO, set
% VO, set
% 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
All
8
15
50
mVrms
⎯
⎯
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
25
mVpk-pk
ESR ≥ 1 mΩ
All
All
All
All
All
CO, max
CO, max
Io
1000
5000
20
μF
μF
⎯
⎯
0
⎯
⎯
ESR ≥ 10 mΩ
Output Current
Adc
% Io
Adc
⎯
Output Current Limit Inception (Hiccup Mode )
Output Short-Circuit Current
(VO≤250mV) ( Hiccup Mode )
Efficiency
IO, lim
IO, s/c
180
3.5
⎯
⎯
⎯
⎯
VO,set = 0.75Vdc
VO, set = 1.2Vdc
VO,set = 1.8Vdc
All
η
η
77.5
83.5
89.0
300
%
%
VIN= 2.4V, TA=25°C
IO=IO, max , VO= VO,set
η
%
Switching Frequency
fsw
kHz
⎯
⎯
⎯
⎯
Dynamic Load Response
All
Vpk
200
mV
(dI/dt=2.5A/μs; VIN = VIN, nom; TA=25°C)
Load Change from Io= 50% to 100% of
Io,max; 1μF ceramic// 10 μF tantalum
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
All
ts
25
⎯
⎯
⎯
⎯
μs
Vpk
200
mV
(dI/dt=2.5A/μs; VIN = VIN, nom; TA=25°C)
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
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output
June 6, 2008
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Dynamic Load Response
All
Vpk
120
mV
(dI/dt=2.5A/μs; V VIN = VIN, nom; TA=25°C)
⎯
⎯
Load Change from Io= 50% to 100% of Io,max;
Co = 2x150 μF polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
All
ts
50
⎯
⎯
⎯
⎯
μs
Vpk
120
mV
(dI/dt=2.5A/μs; VIN = VIN, nom; TA=25°C)
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)
Weight
11,967,000
5.6 (0.2)
Hours
g (oz.)
⎯
⎯
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Device
Symbol
Min
Typ
Max
Unit
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)
Input High Current
All
All
All
All
VIH
IIH
―
―
―
―
VIN, max
10
V
μA
V
Input Low Voltage (Module OFF)
Input Low Current
VIL
IIL
-0.2
―
―
0.3
1
0.2
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)
Input High Current
All
All
All
All
VIH
IIH
1.5
―
0.2
―
VIN,max
1
Vdc
mA
Vdc
μA
Input Low Voltage (Module ON)
Input low Current
VIL
IIL
-0.2
0.3
10
―
Turn-On Delay and Rise Times
(IO=IO, max , VIN = VIN, nom, TA = 25 oC, )
All
All
Tdelay
Tdelay
3.9
3.9
msec
msec
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)
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
All
Trise
―
4.2
8.5
1
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
Output voltage overshoot – Startup
IO= IO, max; VIN = 3.0 to 5.5Vdc, TA = 25 oC
―
% VO, set
Over temperature Protection
Tref
125
°C
⎯
⎯
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
All
All
2.2
2.0
V
V
⎯
⎯
⎯
⎯
Turn-off Threshold
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Characteristic Curves
The following figures provide typical characteristics for the Austin SuperLynx IITM SMT modules at 25ºC.
90
88
86
84
82
80
78
76
74
96
95
94
93
92
91
90
89
88
Vin = 2.4V
Vin = 3.3V
Vin = 3.63V
Vin = 2.4V
Vin = 3.3V
Vin = 3.63V
0
4
8
12
16
20
0
4
8
12
16
20
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current
(Vout = 0.75Vdc).
Figure 2. Converter Efficiency versus Output Current
(Vout = 1.8Vdc).
94
92
90
88
20
18
16
Io = 20A
14
12
10
86
8
Vin = 2.4V
Io = 10A
6
4
84
82
80
Vin = 3.3V
Vin = 3.63V
2
Io = 0A
0
0
4
8
12
16
20
1
1.5
2
2.5
3
3.5
4
OUTPUT CURRENT, IO (A)
INPUT VOLTAGE, VIN (V)
Figure 3. Converter Efficiency versus Output Current
(Vout = 1.2Vdc).
Figure 4. Input voltage vs. Input Current
(Vout = 1.8Vdc).
TIME, t (100μs/div)
TIME, t (20μs/div)
Figure 5. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 1.2 Vdc).
Figure 6. Transient Response to Dynamic Load
Change from 100% to 50% of full load
(Vo = 1.2 Vdc, Cext = 2x150 μF Polymer Capacitors).
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Characteristic Curves (continued)
The following figures provide typical characteristics for the Austin ATM020A0X SMT modules at 25ºC.
TIME, t (5 ms/div)
TIME, t (2μs/div)
Figure 7. Typical Output Ripple and Noise
(Vin = 3.3Vdc, Vo = 1.8Vdc, Io=20A).
Figure 8. Typical Start-Up with application of Vin
(Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 0A).
TIME, t (5 ms/div)
TIME, t (5 ms/div)
Figure 9. Typical Start-Up Using Remote On/Off (Vin =
3.3Vdc, Vo = 1.8Vdc, Io = 20.0A).
Figure 10. Typical Start-Up applying Vin with Prebias
(Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A, Vbias =1.0Vdc).
TIME, t (5 ms/div)
TIME, t (20ms/div)
Figure 11. Typical Start-Up with application of Vin
(Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 2A).
Figure 12. Output short circuit Current
(Vin = 3.3Vdc, Vo = 0.75Vdc).
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Characteristic Curves (continued)
The following figures provide thermal derating curves for the Austin ATM020A0X SMT modules.
25
20
15
10
5
25
20
15
10
5
400lfm
2.0 m/s
400lfm
2.0 m/s
NC
NC
100lfm
0.5 m/s
100lfm
0.5 m/s
200lfm
1.0 m/s
300lfm
1.5 m/s
200lfm
1.0 m/s
300lfm
1.5 m/s
0
0
0
10
20
30
40
50
60
70
80
90
0
10
20
30
40
50
60
70
80
90
AMBIENT TEMPERATURE, TA OC
AMBIENT TEMPERATURE, TA OC
Figure 13. Derating Output Current versus Local
Ambient Temperature and Airflow
(Vin = 3.3Vdc, Vo=1.0Vdc).
Figure 14. Derating Output Current versus Local
Ambient Temperature and Airflow
(Vin = 3.3Vdc, Vo=1.8Vdc).
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Test Configurations
CURRENT PROBE
TO OSCILLOSCOPE
Rdistribution Rcontact
Rcontact Rdistribution
VIN(+)
VO
LTEST
VIN(+)
1μH
RLOAD
VO
VIN
CIN
CS 1000μF
Electrolytic
2x100μF
Tantalum
Rdistribution Rcontact
Rcontact Rdistribution
E.S.R.<0.1Ω
COM
COM
@ 20°C 100kHz
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.
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.
Figure 17. Output Voltage and Efficiency Test Setup.
Figure 15. Input Reflected Ripple Current Test Setup.
VO. IO
COPPER STRIP
Efficiency
=
x
100 %
η
VIN. IIN
VO(+)
COM
RESISTIVE
LOAD
1uF
.
10uF
SCOPE
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.
Figure 16. Output Ripple and Noise Test Setup.
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Design Considerations
Input Filtering
130
The Austin SuperLynx IITM 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.
120
110
100
90
80
70
To minimize input voltage ripple, low-ESR polymer and
ceramic capacitors are recommended at the input of the
module. Figure 18 shows the input ripple voltage (mVp-
p) for various outputs with 2x150 µF polymer capacitors
(Panasonic p/n: EEFUE0J151R, Sanyo p/n: 6TPE150M)
in parallel with 2 x 47 µF ceramic capacitor (Panasonic
p/n: ECJ-5YB0J476M, Taiyo- Yuden p/n:
CEJMK432BJ476MMT) at full load. Figure 19 shows the
input ripple with 4x150 µF polymer capacitors in parallel
with 4 x 47 µF ceramic capacitor at full load.
60
0.7
1.1
1.5
1.9
2.3
Output Voltage (Vdc)
Figure 18. Input ripple voltage for various output
with 2x150 µF polymer and 2x47 µF ceramic
capacitors at the input (Vin=3.3V, full load)
120
110
100
90
80
70
60
0.7
1.1
1.5
1.9
2.3
Output Voltage (Vdc)
Figure 19. Input ripple voltage for various output
with 4x150 µF polymer and 4x47 µF ceramic
capacitors at the input (Vin=3.3V, full load).
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Design Considerations (continued)
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.
Output Filtering
The Austin SuperLynx IITM SMT module is designed for
low output ripple voltage and will meet the maximum
output ripple specification with 1 µF ceramic and 10 µF
tantalum capacitors at the output of the module.
However, additional output filtering may be required by
the system designer for a number of reasons. First, there
may be a need to further reduce the output ripple and
noise of the module. Second, the dynamic response
characteristics may need to be customized to a particular
load step change.
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.
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.
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Feature Description
Lynx II Module
VIN(+)
Remote On/Off
Austin SuperLynx IITM SMT power modules feature an
On/Off pin for remote On/Off operation. Two On/Off logic
options are available in the Austin SuperLynx IITM 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.
Rpull-up
IOn/Off
On/Off Pin
PWM Enable
Css
VOn/Off
+
R1
R2
Q2
Q1
_
GND
For positive logic modules, the circuit configuration for
using the On/Off pin is shown in Figure 20. 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.
Figure 21. 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 3.5A.
Lynx series Module
VIN(+)
20k
Input Undervoltage Lockout
On/Off
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.
20k
Ion/off
+
Enable
Css
20k
20k
Von/off
Overtemperature Protection
-
To provide over temperature protection in a fault
GND
condition, the unit relies upon the thermal protection
feature of the controller IC. The unit will shutdown if the
thermal reference point Tref, exceeds 125oC (typical), but
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.
Figure 20. Remote On/Off Implementation.
For negative logic On/Off devices, the circuit
configuration is shown is Figure 21. 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 1.5Vdc. To turn the module ON,
logic Low is applied to the On/Off pin by turning ON Q1.
When not using the negative logic On/Off, leave the pin
unconnected or tie to GND.
LINEAGE POWER
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Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
www.lineagepower.com, determines the set point
variation with specific trim resistor values and tolerances.
Feature Descriptions (continued)
Output Voltage Programming
The output voltage of the Austin SuperLynx IITM SMT can
be programmed to any voltage from 0.75 Vdc to 2.0 Vdc
by connecting a single resistor (shown as Rtrim in Figure
22) between the TRIM and GND pins of the module.
Without an external resistor between TRIM pin and the
ground, the output voltage of the module is 0.7525 Vdc.
To calculate the value of the resistor Rtrim for a particular
output voltage Vo, use the following equation:
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).
21070
⎡
⎤
Voltage Margining
Rtrim =
−5110 Ω
⎢
⎥
Vo − 0.7525
⎣
⎦
Output voltage margining can be implemented in the
Austin SuperLynx IITM modules by connecting a resistor,
R
margin-up, from the Trim pin to the ground pin for
For example, to program the output voltage of the Austin
SuperLynxTM module to 1.8 Vdc, Rtrim is calculated is
follows:
margining-up the output voltage and by connecting a
resistor, Rmargin-down, from the Trim pin to the Output pin
for margining-down. Figure 23 shows the circuit
configuration for output voltage margining. The POL
Programming tool available at www.lineagepower.com
computes 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.
21070
⎡
⎤
Rtrim =
− 5110
⎢
⎣
⎥
⎦
1.8 − 0.7525
Rtrim =15.004kΩ
Vout
VIN(+)
VO(+)
TRIM
Vo
Rmargin-down
ON/OFF
LOAD
MODULE
R
trim
Q2
GND
Trim
Rmargin-up
Rtrim
Figure 22. Circuit configuration for programming
output voltage using an external resistor.
Q1
Table 1 provides Rtrim values required for some common
GND
output voltages
Figure 23. Circuit Configuration for margining Output
voltage.
Table 1
VO, set (V)
0.7525
1.2
Rtrim (KΩ)
Open
41.973
23.077
15.004
1.5
1.8
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
LINEAGE POWER
13
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Remote Sense
Feature Descriptions (continued)
The Austin SuperLynx IITM 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 24). The voltage between
the Sense pin and Vo pin must not exceed 0.5V.
Voltage Sequencing
Austin SuperLynx IITM 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 VIN or leave
it unconnected.
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.
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.
Rdistribution Rcontact
Rcontact Rdistribution
VIN(+)
VO
Sense
RLOAD
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.
Rdistribution Rcontact
Rcontact Rdistribution
CO M
CO M
Figure 24. Remote sense circuit configuration
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 SuperLynx IITM, contact
the Lineage Power technical representative for
preliminary application note on output voltage sequencing
using Austin SuperLynx IITM series.
LINEAGE POWER
14
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should always
be provided to help ensure reliable operation.
25.4_
(1.0)
Wind Tunnel
PWBs
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
25. Note that the airflow is parallel to the long axis of the
module as shown in figure 26. The derating data applies
to airflow in either direction of the module’s long axis.
Po we r Mo d ule
76.2_
(3.0)
x
Probe Location
for measuring
airflow and
ambient
Top View
5.97_
(0.235)
temperature
Air
flow
Figure 26. Thermal Test Set-up.
Tref
Bottom View
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 (TA) for airflow
conditions ranging from natural convection and up to
2m/s (400 ft./min) are shown in the Characteristics
Curves section.
Layout Considerations
Air Flow
Copper paths must not be routed beneath the power
module. For additional layout guide-lines, refer to the
FLTR100V10 application note.
Figure 25. T
ref
Temperature measurement location.
The thermal reference point, Tref used in the
specifications is shown in Figure 25. For reliable
operation this temperature should not exceed 115oC.
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.
LINEAGE POWER
15
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A 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
Co-planarity (max): 0.20 [0.008]
Side View
Bottom View
PIN
1
FUNCTION
On/Off
VIN
2
3
SEQ
4
GND
5
VOUT
6
Trim
7
Sense
MPS176595
LINEAGE POWER
16
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Recommended Pad Layout
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
LINEAGE POWER
17
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Packaging Details
The Austin SuperLynx IITM 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:
Inside Dimensions:
Tape Width:
330.2 mm (13.00)
177.8 mm (7.00”)
44.00 mm (1.732”)
LINEAGE POWER
18
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
observe these instructions may result in the failure of
or cause damage to the modules, and can adversely
affect long-term reliability.
Surface Mount Information
Pick and Place
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.
The Austin SuperLynx IITM 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 300oC. The label also carries
product information such as product code, serial
number and the location of manufacture.
300
Peak Temp 235oC
250
Cooling
zone
Heat zone
max 4oCs-1
200
150
10 0
50
1- 4 oCs-1
Soak zone
30-240s
T
lim above
205oC
Preheat zone
max4oCs-1
Figure 27. Pick and Place Location.
Nozzle Recommendations
0
REFLOW TIME (S)
Figure 28. Reflow Profile for Tin/Lead (Sn/Pb)
process
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.
240
235
230
225
220
215
210
205
200
Oblong or oval nozzles up to 11 x 9 mm may also be
used within the space available.
Tin Lead Soldering
The Austin SuperLynx IITM 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
0
10
20
30
40
50
60
Figure 29. Time Limit Curve Above 205oC for
Tin/Lead (Sn/Pb) process
LINEAGE POWER
19
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
300
Surface Mount Information (continued)
Per J-STD-020 Rev. C
250
200
150
100
50
Lead Free Soldering
Peak Temp 245° C
The SMT modules of the Austin SuperLynx IITM
families 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.
Cooling Zone
4° C / second
* Min. Time Above 235° C
15 seconds
Heating Zone
1° C / second
* Time Above 217° C
60 seconds
Pb-free Reflow Profile
0
Reflow Time (in seconds)
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. 38.
Figure 30. Recommended linear reflow profile
using Sn/Ag/Cu solder.
Storage and Handling
The Austin SuperLynx IITM modules have a MSL
rating of 1. The recommended storage environment
and handling procedures for moisture-sensitive
surface mount packages is detailed in J-STD-033
Rev. A (Handling, Packing, Shipping and Use of
Moisture/Reflow Sensitive Surface Mount Devices).
Moisture barrier bags (MBB) with desiccant are
required for MSL ratings of 2 or greater. These
sealed packages should not be broken until time of
use. Once the original package is broken, the floor
life of the product at conditions of ≤ 30°C and 60%
relative humidity varies according to the MSL rating
(see J-STD-033A). The shelf life for dry packed SMT
packages will be a minimum of 12 months from the
bag seal date, when stored at the following
conditions: < 40° C, < 90% relative humidity.
Post Solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power
Modules: Soldering and Cleaning Application Note
(AN04-001).
LINEAGE POWER
20
Data Sheet
Austin SuperLynx IITM SMT Non-isolated Power Modules:
June 6, 2008
2.4 – 3.63Vdc input; 0.75Vdc to 2.0Vdc Output; 20A output current
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 3. Device Codes
Input
Voltage
Output
Voltage
Output
Current 1.8V @ 20A
Efficiency
Connector
Type
Product codes
Comcode
2.4 - 3.63Vdc
2.4 - 3.63Vdc
0.75 – 2.0Vdc
0.75 – 2.0Vdc
20A
20A
89%
89%
SMT
SMT
ATM020A0X3-SR
ATM020A0X3-SRZ
CC109103628
CC109135984
-Z refers to RoHS-compliant codes
Asia-Pacific Headquarters
Tel: +65 6416 4283
Europe, Middle-East and Africa Headquarters
World Wide Headquarters
Lineage Power Corporation
Tel: +49 89 6089 286
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819
India Headquarters
(Outside U.S.A.: +1-972-284-2626)
www.lineagepower.com
Tel: +91 80 28411633
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.
© 2008 Lineage Power Corporation, (Mesquite, Texas) All International Rights Reserved.
LINEAGE POWER
21
Document No: DS06-110 ver. 1.81
PDF name: atm020a0x3_sr.pdf
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