Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10Vdc – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A Output Current
RoHS Compliant
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 16A output current
High efficiency – 92% at 3.3V full load (VIN = 12.0V)
Small size and low profile:
33.0 mm x 13.46 mm x 8.28 mm
(1.30 in x 0.53 in x 0.326 in)
Low output ripple and noise
High Reliability:
Applications
Calculated MTBF = 4.4M hours at 25oC Full-load
Distributed power architectures
Constant switching frequency (300 kHz)
Intermediate bus voltage applications
Telecommunications equipment
Output voltage programmable from 0.75 Vdc to
5.5Vdc via external resistor
Servers and storage applications
Line Regulation: 0.3% (typical)
Networking equipment
Load Regulation: 0.4% (typical)
Enterprise Networks
Temperature Regulation: 0.4 % (typical)
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
Remote On/Off
Remote Sense
Output overcurrent protection (non-latching)
Wide operating temperature range (-40°C to 85°C)
UL* 60950-1Recognized, CSA C22.2 No. 60950-103 Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
†
Description
Austin SuperLynxTM 12V SMT (surface mount technology) power modules are non-isolated DC-DC converters that
can deliver up to 16A of output current with full load efficiency of 92% at 3.3V output. These modules provide a
precisely regulated output voltage ranging from 0.75Vdc to 5.5Vdc, programmable via an external resistor over a
wide range of input voltage (VIN = 10 – 14Vdc).
* 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: DS03-080 ver. 1.68
PDF name: superlynx_12v_smt_ds.pdf
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A 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
All
VIN
-0.3
15
Vdc
All
TA
-40
85
°C
All
Tstg
-55
125
°C
Input Voltage
Continuous
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
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
10.0
12.0
14.0
Vdc
Maximum Input Current
All
IIN,max
9.5
Adc
VO,set = 0.75 Vdc
IIN,No load
40
mA
VO,set = 5.0Vdc
IIN,No load
100
mA
All
IIN,stand-by
2
mA
Inrush Transient
All
It
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN, min to
VIN, max, IO= IOmax ; See Test configuration section)
All
30
Input Ripple Rejection (120Hz)
All
30
(VIN=10.0V to 14.0V, IO=IO, max )
Input No Load Current
(VIN = 12.0Vdc, Io = 0, module enabled)
Input Stand-by Current
(VIN = 12.0Vdc, module disabled)
2
0.4
2
As
mAp-p
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.
LINEAGE POWER
2
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Electrical Specifications (continued)
Parameter
Output Voltage Set-point
Device
Symbol
Min
Typ
Max
Unit
All
VO, set
-2.0
VO, set
+2.0
% VO, set
All
VO, set
-2.5%
⎯
+3.5%
% VO, set
All
VO
0.7525
5.5
Vdc
(VIN=IN, min, IO=IO, max, TA=25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range
Selected by an external resistor
Output Regulation
Line (VIN=VIN, min to VIN, max)
All
⎯
0.3
⎯
% VO, set
Load (IO=IO, min to IO, max)
All
⎯
0.4
⎯
% VO, set
Temperature (Tref=TA, min to TA, max)
All
⎯
0.4
⎯
% VO, set
RMS (5Hz to 20MHz bandwidth)
All
⎯
12
30
mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
⎯
30
75
mVpk-pk
μF
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
Cout = 1μF ceramic//10μFtantalum capacitors)
External Capacitance
ESR ≥ 1 mΩ
All
CO, max
⎯
⎯
1000
ESR ≥ 10 mΩ
All
CO, max
⎯
⎯
5000
μF
Output Current
All
Io
0
16
Adc
Output Current Limit Inception (Hiccup Mode )
All
IO, lim
⎯
180
⎯
% Io
All
IO, s/c
⎯
3
⎯
Adc
(VO= 90% of VO, set)
Output Short-Circuit Current
(VO≤250mV) ( Hiccup Mode )
Efficiency
VIN= VIN, nom, TA=25°C
IO=IO, max , VO= VO,set
Switching Frequency
VO,set = 0.75Vdc
η
79.0
%
VO, set = 1.2Vdc
η
85.0
%
VO,set = 1.5Vdc
η
87.0
%
VO,set = 1.8Vdc
η
88.0
%
VO,set = 2.5Vdc
η
90.5
%
VO,set = 3.3Vdc
η
92.0
%
VO,set = 5.0Vdc
η
94.0
%
All
fsw
⎯
300
⎯
kHz
All
Vpk
⎯
200
⎯
mV
Dynamic Load Response
(dIo/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
ts
⎯
25
⎯
μs
(dIo/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
All
Vpk
⎯
200
⎯
mV
All
ts
⎯
25
⎯
μs
Peak Deviation
Settling Time (Vo<10% peak deviation)
LINEAGE POWER
3
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
All
Vpk
⎯
100
⎯
mV
Dynamic Load Response
(dIo/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
ts
⎯
50
⎯
μs
(dIo/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
All
Vpk
⎯
100
⎯
mV
Settling Time (Vo<10% peak deviation)
All
ts
⎯
50
⎯
μs
General Specifications
Parameter
Min
Calculated MTBF (IO=IO, max, TA=25°C)
Weight
LINEAGE POWER
Typ
Max
4,444,000
⎯
5.6 (0.2)
Unit
Hours
⎯
g (oz.)
4
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
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
Von/Off
All
VIH
Ion/Off
All
IIH
Von/Off
All
VIL
Ion/off
All
IIL
All
Tdelay
All
All
Min
Typ
Max
Unit
―
―
VIN
V
―
―
10
μA
―
―
0.3
V
―
―
1
mA
―
3
―
msec
Tdelay
―
3
―
msec
Trise
―
4
6
msec
―
1
% VO, set
―
―
0.5
⎯
125
⎯
Remote On/Off Signal interface
(VIN=VIN, min to VIN, max; Open collector pnp or equivalent
Compatible, Von/off signal referenced to GND
See feature description section)
Logic High (On/Off Voltage pin open - Module ON)
Logic Low (Von/Off ≤ 0.3V – Module OFF)
Turn-On Delay and Rise Times
o
(IO=IO, max , VIN = VIN, nom, TA = 25 C, )
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)
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
Output voltage overshoot – Startup
o
IO= IO, max; VIN = 3.0 to 5.5Vdc, TA = 25 C
Remote Sense Range
Overtemperature Protection
All
Tref
°C
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
All
8.2
V
Turn-off Threshold
All
8.0
V
LINEAGE POWER
5
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Characteristic Curves
90
94
88
92
86
90
84
88
EFFICIENCY, η (%)
EFFICIENCY, η (%)
The following figures provide typical characteristics for the Austin SuperLynxTM 12V SMT modules at 25ºC.
82
80
78
76
Vin=14V
74
Vin=12V
72
Vin=10V
70
0
4
8
12
86
84
82
80
Vin=14V
78
Vin=12V
76
Vin=10V
74
0
16
OUTPUT CURRENT, IO (A)
92
86
90
84
88
EFFICIENCY, η (%)
EFFICIENCY, η (%)
94
88
82
80
78
Vin=14V
Vin=12V
72
Vin=10V
70
0
4
8
12
16
86
84
82
80
Vin=14V
78
Vin=12V
76
Vin=10V
74
0
16
OUTPUT CURRENT, IO (A)
4
8
12
16
OUTPUT CURRENT, IO (A)
Figure 2. Converter Efficiency versus Output Current
(Vout = 1.2Vdc).
Figure 5. Converter Efficiency versus Output Current
(Vout = 2.5Vdc).
92
96
90
94
88
92
90
86
EFFICIENCY, η (%)
EFFICIENCY, η (%)
12
Figure 4. Converter Efficiency versus Output Current
(Vout = 1.8Vdc).
90
74
8
OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current
(Vout = 0.75Vdc).
76
4
84
82
80
78
Vin=14V
76
Vin=12V
74
Vin=10V
72
0
4
8
12
86
84
82
80
Vin=14V
78
Vin=12V
76
Vin=10V
74
16
OUTPUT CURRENT, IO (A)
Figure 3. Converter Efficiency versus Output Current
(Vout = 1.5Vdc).
LINEAGE POWER
88
0
4
8
12
16
OUTPUT CURRENT, IO (A)
Figure 6. Converter Efficiency versus Output Current
(Vout = 3.3Vdc).
6
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Characteristic Curves (continued)
TM
Io =8A
8
Io =16A
6
4
2
0
8
9
10
11
12
14
TIME, t (5 μs/div)
TIME, t (2μs/div)
Figure 9. Typical Output Ripple and Noise
(Vin = 12V dc, Vo = 5.0 Vdc, Io=16A).
LINEAGE POWER
IO (A) (2A/div)
TIME, t (5 μs/div)
VO (V) (50mV/div)
Figure 11. Transient Response to Dynamic Load
Change from 100% to 50% of full load (Vo = 5.0 Vdc).
IO (A) (2A/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
Figure 8. Typical Output Ripple and Noise
(Vin = 12V dc, Vo = 2.5 Vdc, Io=16A).
OUTPUT CURRENT, OUTPUT VOLTAGE
TIME, t (2μs/div)
VO (V) (200mV/div)
Figure 10. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 5.0Vdc).
VO (V) (20mV/div)
Figure 7. Input voltage vs. Input Current
(Vout = 5.0Vdc).
OUTPUT CURRENT, OUTPUT VOLTAGE
13
OUTPUT VOLTAGE
INPUT VOLTAGE, VIN (V)
VO (V) (200mV/div)
Io =0A
10
12V SMT modules at 25ºC.
IO (A) (2A/div)
INPUT CURRENT, IIN (A)
12
OUTPUT CURRENT, OUTPUT VOLTAGE
The following figures provide typical characteristics for the Austin SuperLynx
TIME, t (10μs/div)
Figure 12. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 5.0 Vdc,
Cext = 2x150 μF Polymer Capacitors).
7
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Characteristic Curves (continued)
TM
VOn/off (V) (5V/div)
VOV) (2V/div)
VIN (V) (5V/div)
Vo (V) (2V/div)
TIME, t (2 ms/div)
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 = 16A, Co = 1050 μF).
OUTPUT VOLTAGE
On/Off VOLTAGE
OUTPUT VOLTAGE
Figure 13. Transient Response to Dynamic Load
Change from 100% of 50% full load (Vo = 5.0 Vdc, Cext
= 2x150 μF Polymer Capacitors).
OUTPUT VOLTAGE, INPUT VOLTAGE
TIME, t (10μs/div)
TIME, t (2 ms/div)
IO (A) (10A/div)
VOn/off (V) (5V/div)
VOV) (2V/div)
TIME, t (2 ms/div)
Figure 15. Typical Start-Up Using Remote On/Off with
Low-ESR external capacitors (7x150uF Polymer)
(Vin = 12Vdc, Vo = 5.0Vdc, Io = 16A, Co = 1050μF).
LINEAGE POWER
TIME, t (2 ms/div)
Figure 17 Typical Start-Up with Prebias (Vin = 12Vdc,
Vo = 5.0Vdc, Io = 1A, Vbias =3.3 Vdc).
OUTPUT CURRENT,
On/Off VOLTAGE
OUTPUT VOLTAGE
Figure 14. Typical Start-Up Using Remote On/Off
(Vin = 12Vdc, Vo = 5.0Vdc, Io =16A).
12V SMT modules at 25ºC.
VOV) (1V/div)
OUTPUT CURRENT OUTPUTVOLTAGE
IO (A) (2A/div)
VO (V) (100mV/div)
The following figures provide typical characteristics for the Austin SuperLynx
TIME, t (10ms/div)
Figure 18. Output short circuit Current (Vin = 12Vdc,
Vo = 0.75Vdc).
8
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Characteristic Curves (continued)
18
18
16
16
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
The following figures provide thermal derating curves for the Austin SuperLynx
14
12
10
NC
8
100 LFM
6
200 LFM
4
300 LFM
2
400 LFM
0
20
30
40
50
60
70
O
80
90
AMBIENT TEMPERATURE, TA C
TM
12V SMT modules.
14
12
10
NC
8
6
4
2
0
100 LFM
200 LFM
300 LFM
400 LFM
20
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
Figure 19. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=0.75Vdc).
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=5.0 Vdc).
18
OUTPUT CURRENT, Io (A)
16
14
12
10
NC
8
6
4
2
0
100 LFM
200 LFM
300 LFM
400 LFM
20
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
Figure 20. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=1.8 Vdc).
18
OUTPUT CURRENT, Io (A)
16
14
12
10
NC
8
6
4
2
0
100 LFM
200 LFM
300 LFM
400 LFM
20
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
Figure 21. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=3.3 Vdc).
LINEAGE POWER
9
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Test Configurations
Design Considerations
CURRENT PROBE
TO OSCILLOSCOPE
VIN(+)
BATTERY
CIN
CS 1000μF
Electrolytic
2x100μF
Tantalum
E.S.R.<0.1Ω
@ 20°C 100kHz
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
Figure 23. Input Reflected Ripple Current Test Setup.
COPPER STRIP
VO (+)
TM
The Austin SuperLynx 12V SMT module should be
connected to a low-impedance source. A highly inductive
source can affect the stability of the module. An input
capacitance must be placed directly adjacent to the input
pin of the module, to minimize input ripple voltage and
ensure module stability.
LTEST
1μH
Input Filtering
In a typical application, 6x47 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 further minimize ripple voltage at the input,
very low ESR ceramic capacitors are recommended at
the input of the module. Figure 26 shows input ripple
voltage (mVp-p) for various outputs with 6x47 µF
tantalum capacitors and with 6x22 µF ceramic capacitor
(TDK part #: C4532X5R1C226M) at full load. .
RESISTIVE
LOAD
.
10uF
350
SCOPE
COM
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 24. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact
Rcontact
VIN(+)
Rdistribution
Input Ripple Voltage (mVp-p)
1uF
300
250
200
150
100
Tantalum
50
Ceramic
0
VO
0
Rdistribution
RLOAD
VO
VIN
Rcontact
Rcontact
COM
Rdistribution
COM
1
2
3
4
5
Output Voltage (Vdc)
Figure 26. Input ripple voltage for various output
with 6x47 µF tantalum capacitors and with 6x22 µF
ceramic capacitors at the input (full load).
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 25. Output Voltage and Efficiency Test Setup.
VO. IO
Efficiency
η =
LINEAGE POWER
VIN. IIN
x
100 %
10
6
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Design Considerations (continued)
Safety Considerations
Output Filtering
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.
TM
The Austin SuperLynx 12V SMT module is designed for
low output ripple voltage and will meet the maximum
output ripple specification with 1 µF ceramic and 10 µF
tantalum capacitors at the output of the module.
However, additional output filtering may be required by
the system designer for a number of reasons. First, there
may be a need to further reduce the output ripple and
noise of the module. Second, the dynamic response
characteristics may need to be customized to a particular
load step change.
To reduce the output ripple and improve the dynamic
response to a step load change, additional capacitance at
the output can be used. Low ESR polymer and ceramic
capacitors are recommended to improve the dynamic
response of the module. For stable operation of the
module, limit the capacitance to less than the maximum
output capacitance as specified in the electrical
specification table.
LINEAGE POWER
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.
11
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
temperatures beyond its rating. The module will
automatically restarts after it cools down.
Feature Description
Remote On/Off
TM
The Austin SuperLynx 12V SMT power modules
feature an On/Off pin for remote On/Off operation of the
module. If not using the remote On/Off pin, leave the pin
open (module will be On). The On/Off pin signal
(Von/Off) is referenced to ground. To switch the module
on and off using remote On/Off, connect an open
collector pnp transistor between the On/Off pin and the
VIN pin (See Figure 27).
During a logic-high (On/Off pin is pulled high internal to
the module) when the transistor is in the Off state, the
power module is ON. The maximum allowable leakage
current of the transistor when Von/off = VIN,max is 10µA.
During a logic-low when the transistor is turned-on, the
power module is OFF. During this state VOn/Off is less
than 0.3V and the maximum IOn/Off = 1mA.
VIN(+)
20k
Output Voltage Programming
TM
The output voltage of the Austin SuperLynx 12V can
be programmed to any voltage from 0.75Vdc to 5.5Vdc
by connecting a resistor (shown as Rtrim in Figure 28)
between the Trim and GND pins of the module.
Without an external resistor between the 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:
⎡ 10500
⎤
Rtrim = ⎢
− 1000⎥ Ω
⎣ Vo − 0.7525
⎦
Rtrim is the external resistor in Ω
Vo is the desired output voltage
For example, to program the output voltage of the Austin
SuperLynxTM 12V module to 1.8V, Rtrim is calculated as
follows:
⎡ 10500
⎤
− 1000⎥
⎣1.8 − 0.75
⎦
Rtrim = ⎢
On/Off
Ion/off +
20k
20k
Css
GND
Rtrim = 9.024 kΩ
Enable
Von/off
V IN(+)
V O(+)
ON/OFF
TRIM
20k
Figure 27. Remote On/Off Implementation.
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 3A.
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 protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
shutdown if the thermal reference point Tref, exceeds
o
125 C (typical), but the thermal shutdown is not
intended as a guarantee that the unit will survive
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LOAD
Rtrim
GND
Figure 28. Circuit configuration to program output
voltage using an external resistor.
TM
Austin SuperLynx 12Vdc can also be programmed by
applying a voltage between the TRIM and GND pins
(Figure 29). The following equation can be used to
determine the value of Vtrim needed to obtain a desired
output voltage Vo:
Vtrim = (0.7 − 0.0667 × {Vo − 0.7525})
For example, to program the output voltage of a
TM
SuperLynx module to 3.3 Vdc, Vtrim is calculated as
follows:
Vtrim = (0.7 − 0.0667 × {3.3 − 0.7525})
Vtrim = 0.530V
12
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
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).
Feature Descriptions (continued)
Output Voltage Programming (continued)
V IN(+)
V O(+)
ON/OFF
LOAD
TRIM
+
-
GND
Vtrim
Figure 29. Circuit Configuration for programming
Output voltage using external voltage source.
Table 1 provides Rtrim values for some common
output voltages, while Table 2 provides values of
the external voltage source, Vtrim for same
common output voltages.
Table 1
VO, set (V)
Rtrim (KΩ)
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
Voltage Margining
Output voltage margining can be implemented in the
Austin SuperLynxTM 12V SMT 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 the Output pin
for margining-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 Rmargin-up and Rmargin-down for a specific output
voltage and % margin. Please consult your local
Lineage Power technical representative for additional
details.
Vo
Rmargin-down
Austin Lynx or
Lynx II Series
Q2
Trim
Rmargin-up
Table 2
Rtrim
VO, set (V)
Vtrim (V)
0.7525
Open
1.2
0.670
1.5
0.650
1.8
0.630
2.5
0.583
3.3
0.530
5.0
0.4166
Q1
GND
Figure 30. Circuit Configuration for margining Output
voltage.
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.
LINEAGE POWER
13
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Feature Descriptions (continued)
Remote Sense
The Austin SuperLynxTM 12V 12V SMTpower 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 output pin.
Rdistribution Rcontact
Rcontact Rdistribution
VIN(+)
VO
Sense
RLOAD
Rdistribution Rcontact
Rcontact Rdistribution
COM
COM
Figure 31. Remote sense circuit configuration.
LINEAGE POWER
14
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Thermal Considerations
25.4_
(1.0)
Wind Tunnel
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.
Air Flow
Top View
PWBs
Power Module
76.2_
(3.0)
x
5.97_
(0.235)
Probe Loc ation
for measuring
airflow and
ambient
temperature
Air
flow
Bottom View
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 temperature (TA) for
airflow conditions ranging from natural convection and
up to 2m/s (400 ft./min) are shown in the
Characteristics Curves section.
Tref
Figure 32. Tref Temperature measurement location.
The thermal reference point, Tref used in the
specifications is shown in Figure 32. For reliable
o
operation this temperature should not exceed 115 C.
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.
LINEAGE POWER
15
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A 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.)
LINEAGE POWER
16
Data Sheet
April 8, 2008
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A 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
Name
Pin No.
Function
ON/OFF
1
Remote On/Off Control
Positive Input Voltage
Vin
2
GND
4
Common Ground
Vout
5
Positive Output Voltage
TRIM
6
Output Voltage Trim
SENSE
7
Positive Remote Sense
17
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Packaging Details
The Austin SuperLynxTM 12V SMTversion 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 diameter:
Inside diameter:
Tape Width:
LINEAGE POWER
330.2 mm (13.00)
177.8 mm (7.00”)
44.0 mm (1.73”)
18
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Surface Mount Information
Pick and Place
Reflow Soldering Information
TM
The Austin SuperLynx 12V 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 the location of manufacture.
TM
The Austin SuperLynx 12V SMT power modules
are large mass, low thermal resistance devices and
typically heat up slower than other SMT components.
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.
o
Typically, the eutectic solder melts at 183 C, 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 pin temperatures.
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.
LINEAGE POWER
Figure 35. Reflow Profile.
An example of a reflow profile (using 63/37 solder) for
the Austin SuperLynxTM 12V SMT power module is :
•
Pre-heating zone: room temperature to 183oC
(2.0 to 4.0 minutes maximum)
•
Initial ramp rate < 2.5oC per second
o
o
•
Soaking Zone: 155 C to 183 C – 60 to 90
seconds typical (2.0 minutes maximum)
o
o
•
Reflow zone ramp rate:1.3 C to 1.6 C per second
o
o
•
Reflow zone: 210 C to 235 C peak temperature –
30 to 60 seconds (90 seconds maximum
19
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Surface Mount Information (continued)
Lead Free Soldering
The –Z version Austin SuperLynx 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 Figure. 36.
MSL Rating
The Austin SuperLynx 12V 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
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original package is broken, the floor life of the product
at conditions of <= 30°C and 60% relative humidity
varies according to the MSL rating (see J-STD-033A).
The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when
stored at the following conditions: < 40° C, < 90%
relative humidity.
Post Solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power
Modules: Soldering and Cleaning Application Note
(AN04-001).
300
Per J-STD-020 Rev. C
Peak Temp 260°C
250
Reflow Temp (°C)
Data Sheet
April 8, 2008
200
150
* Min. Time Above 235°C
15 Seconds
Heating Zone
1°C/Second
Cooling
Zone
*Time Above 217°C
60 Seconds
100
50
0
Reflow Time (Seconds)
Figure 36. Recommended linear reflow profile
using Sn/Ag/Cu solder.
20
Austin SuperLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 16A output current
Data Sheet
April 8, 2008
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 3. Device Codes
Output
Voltage
Output
Current
Efficiency
3.3V @ 16A
Connector
Type
Comcodes
Device Code
Input
Voltage
Range
AXA016A0X3-SR
10 – 14Vdc
0.75V – 5.5Vdc
16 A
92.0%
SMT
108982661
AXA016A0X3-SRZ
10 – 14Vdc
0.75V – 5.5Vdc
16 A
92.0%
SMT
CC109104840
AXA016A0X3-SR12*
10 – 14Vdc
0.75V – 5.5Vdc
16 A
92.0%
SMT
108993424
AXA016A0X3-SR12Z*
10 – 14Vdc
0.75V – 5.5Vdc
16 A
92.0%
SMT
CC109104485
* -12 code has 100Ω resistor between sense and output pins, internal to the module. Standard code, without –12
suffix, has 10Ω resistor between sense and output pins.
-Z refers to RoHS compliant codes
Asia-Pacific Headquarters
Tel: +65 6416 4283
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: [email protected]
Europe, Middle-East and Africa Headquarters
Tel: +49 89 6089 286
India Headquarters
Tel: +91 80 28411633
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: DS03-080 ver. 1.68
PDF name: superlynx_12v_smt_ds.pdf