Page 1
Data Sheet
January 18, 2010
Austin MicroLynx IITM 12V SIP Non-isolated Power Modules:
8.3Vdc – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A Output Current
RoHS Compliant
EZ-SEQUENCE
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
TM
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Flexible output voltage sequencing
TM
EZ-SEQUENCE
Delivers up to 6A output current
High efficiency – 89% at 5.0V full load (V
12.0V)
Small size and low profile:
25.4 mm x 12.7 mm x 6.68 mm
(1.00 in x 0.5 in x 0.263 in)
Low output ripple and noise
High Reliability:
Calculated MTBF = 15.3M hours at 25
Constant switching frequency (300 KHz)
Programmable Output voltage
Line Regulation: 0.3% (typical)
Load Regulation: 0.4% (typical)
Temperature Regulation: 0.4 % (typical)
Remote On/Off
Output overcurrent protection (non-latching)
Wide operating temperature range (-40°C to 85°C)
UL* 60950-1Recognized, CSA
60950-1-03 Certified, and VDE
(EN60950-1) Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
=
IN
o
C Full-load
†
C22.2 No.
‡
0805:2001-12
Description
Austin MicroLynx IITM 12V SIP power modules are non-isolated dc-dc converters that can deliver up to 6A of output
current with full load efficiency of 89% at 5.0V output. These modules provide precisely regulated output voltage
programmable via external resistor from 0.75Vdc to 5.5Vdc over a wide range of input voltage (VIN = 8.3 - 14V).
The Austin MicroLynx II
implement various types of output voltage sequencing when powering multiple voltages on a board. Their openframe construction and small footprint enable designers to develop cost- and space-efficient solutions.
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
TM
12V series has a sequencing feature, EZ-SEQUENCETM that enable designers to
Document No: DS04-025 ver. 1.33
PDF name: microlynx_II_12v_sip_ds.pdf
Page 2
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter Device Symbol Min Max Unit
Input Voltage All V
Continuous
IN
Sequencing voltage All Vseq -0.3 V
Operating Ambient Temperature All T
A
-0.3 15 Vdc
Vdc
IN,max
-40 85 °C
(see Thermal Considerations section)
Storage Temperature All T
stg
-55 125 °C
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage Vo,set ≤ 3.63 VIN 8.3 12 14 Vdc
Vo,set > 3.63 VIN 8.3 12 13.2 Vdc
Maximum Input Current All I
(VIN= V
Input No Load Current V
IN, min
to V
IN, max
, IO=I
)
O, max
= 0.75 Vdc I
O,set
IN,max
IN,No load
4.5 Adc
17 mA
(VIN = V
Input Stand-by Current All I
(VIN = V
, Io = 0, module enabled) V
IN, nom
, module disabled)
IN, nom
= 5.5 Vdc I
O,set
IN,No load
IN,stand-by
100 mA
1.2 mA
Inrush Transient All I2t 0.4 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
= I
V
IN, max, IO
; See Test configuration section)
Omax
IN, min
to
All 30 mAp-p
Input Ripple Rejection (120Hz) All 30 dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being
part of a complex power architecture. To preserve maximum flexibility, internal fusing is not included, however, to
achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fastacting fuse with a maximum rating of 6 A (see Safety Considerations section). Based on the information provided in
this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be
used. Refer to the fuse manufacturer’s data sheet for further information.
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Page 3
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point All V
(VIN=V
IN, min
, IO=I
, TA=25°C)
O, max
Output Voltage All V
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range All V
Selected by an external resistor
O, set
O, set
O
Output Regulation
Line (VIN=V
Load (IO=I
Temperature (T
IN, min
O, min
to V
to I
ref=TA, min
) All
IN, max
) All
O, max
to T
) All ⎯ 0.4
A, max
Output Ripple and Noise on nominal output
(VIN=V
IN, nom
and IO=I
O, min
to I
O, max
Cout = 1μF ceramic//10μFtantalum capacitors)
-2.0 V
-2.5%
+2.0 % V
O, set
⎯
+3.5% % V
0.7525 5.5 Vdc
⎯
⎯
0.3
0.4
⎯
⎯
⎯
% V
% V
% V
O, set
O, set
O, set
O, set
O, set
RMS (5Hz to 20MHz bandwidth) All
Peak-to-Peak (5Hz to 20MHz bandwidth) All
External Capacitance
ESR ≥ 1 mΩ All C
ESR ≥ 10 mΩ All C
Output Current All I
Output Current Limit Inception (Hiccup Mode ) All I
(VO= 90% of V
)
O, set
Output Short-Circuit Current All I
(VO≤250mV) ( Hiccup Mode )
Efficiency V
VIN= V
IO=I
, TA=25°C V
IN, nom
= V
O, max , VO
V
O,set
V
V
V
= 1.2Vdc η 80.0 %
O, set
= 1.5Vdc η 83.0 %
O,set
= 1.8Vdc η 83.5 %
O,set
= 2.5Vdc η 86.5 %
O,set
= 3.3Vdc η 89.0 %
O,set
= 5.0Vdc η 91.0 %
O,set
Switching Frequency All f
O, max
O, max
o
O, lim
O, s/c
sw
⎯
⎯
⎯ ⎯
⎯ ⎯
0 6 Adc
⎯
⎯
⎯
15 30 mV
50 75 mV
1000 μF
3000 μF
200
2
300
⎯
⎯
⎯
% I
Adc
kHz
Dynamic Load Response
(dIo/dt=2.5A/μs; VIN = V
IN, nom
; TA=25°C)
Load Change from Io= 50% to 100% of
Io,max; 1μF ceramic// 10 μF tantalum
All V
pk
⎯
200
⎯
Peak Deviation
Settling Time (Vo<10% peak deviation)
(dIo/dt=2.5A/μs; VIN = V
IN, nom
; TA=25°C)
Load Change from Io= 100% to 50%of Io,max:
1μF ceramic// 10 μF tantalum
All t
All V
s
pk
⎯
⎯
25
200
⎯
⎯
Peak Deviation
Settling Time (Vo<10% peak deviation)
All t
s
⎯
25
⎯
pk-pk
mV
μs
mV
μs
rms
o
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Page 4
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Dynamic Load Response
(dIo/dt=2.5A/μs; V VIN = V
Load Change from Io= 50% to 100% of Io,max;
Co = 2x150 μF polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation)
(dIo/dt=2.5A/μs; VIN = V
Load Change from Io= 100% to 50%of Io,max:
Co = 2x150 μF polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation)
IN, nom
IN, nom
; TA=25°C)
; TA=25°C)
All V
All t
All V
All t
pk
s
pk
s
⎯
⎯
⎯
⎯
50
50
50
50
⎯
⎯
⎯
⎯
mV
μs
mV
μs
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (IO=I
per Telecordia SR-332 Issue 1: Method 1 Case 3
Weight
, TA=25°C)
O, max
⎯
15,371,900 Hours
2.8 (0.1)
⎯
g (oz.)
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Page 5
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A 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
Input High Voltage (Module ON) All VIH ― ― V
Input High Current All IIH ― ― 10 μA
Input Low Voltage (Module OFF) All VIL -0.2 ― 0.3 V
Input Low Current All IIL ― 0.2 1 mA
Device Code with no suffix – Negative Logic
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Input High Voltage (Module OFF) All VIH 2.5 ― V
Input High Current All IIH 0.2 1 mA
Input Low Voltage (Module ON) All VIL -0.2 ― 0.3 Vdc
Input low Current All IIL ― 10 μA
Turn-On Delay and Rise Times
(IO=I
O, max , VIN
Case 1: On/Off input is set to Logic Low (Module
= V
= 25 oC, )
IN, nom, TA
All Tdelay ― 3 ― msec
ON) and then input power is applied (delay from
instant at which V
Case 2: Input power is applied for at least one second
=V
IN
until Vo=10% of Vo,set)
IN, min
All Tdelay ― 3 ― msec
and then the On/Off input is set to logic Low (delay from
instant at which Von/Off=0.3V until Vo=10% of Vo, set)
Output voltage Rise time (time for Vo to rise from 10%
of V
o,set to 90% of Vo, set)
All Trise
Output voltage overshoot – Startup ―
IO= I
Sequencing Delay time
; VIN = 8.3 to 14Vdc, TA = 25 oC
O, max
V
IN, max
Vdc
IN,max
― 4 6 msec
1
% V
O, set
Delay from V
Tracking Accuracy (Power-Up: 2V/ms) All
(Power-Down: 1V/ms) All
(V
to V
IN, min
Overtemperature Protection
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold All
Turn-off Threshold All
to application of voltage on SEQ pin All TsEQ-delay 10 msec
IN, min
100 200 mV
300 500 mV
⎯
140
⎯
7.9 V
7.8 V
IN, max
; I
O, min
|V
SEQ –Vo |
SEQ –Vo |
|V
to I
VSEQ < Vo)
O, max
All T
ref
°C
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Page 6
Data Sheet
V
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Characteristic Curves
The following figures provide typical characteristics for the Austin MicroLynxTM II 12V SIP modules at 25ºC.
86
84
82
80
78
76
74
EFFICIENCY, η (%)
72
0123456
VIN=8.3V
VIN=12V
VIN=14V
OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current
(Vout = 1.2Vdc).
91
88
85
82
79
76
73
EFFICIENCY, η (%)
70
0 1234 56
Figure 4. Converter Efficiency versus Output Current
(Vout = 2.5Vdc).
VIN=8.3V
VIN=12V
VIN=14V
88
86
84
82
80
78
76
EFFICIENCY, η (%)
74
0 123456
VIN=8.3
VIN=12V
VIN=14V
OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)
Figure 2. Converter Efficiency versus Output Current
(Vout = 1.5Vdc).
88
86
84
82
80
78
76
EFFICIENCY, η (%)
74
0123456
VIN=8.3V
VIN=12V
VIN=14V
OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)
Figure 3. Converter Efficiency versus Output Current
(Vout = 1.8Vdc).
93
90
87
84
81
78
75
EFFICIENCY, η (%)
72
0123456
VIN=8.3V
VIN=12V
VIN=14V
Figure 5. Converter Efficiency versus Output Current
(Vout = 3.3Vdc).
96
93
90
87
84
81
78
EFFICIENCY, η (%)
75
0 123456
VIN=8.3V
VIN=12V
VIN=14V
Figure 6. Converter Efficiency versus Output Current
(Vout = 5.0Vdc).
LINEAGE POWER 6
Page 7
Data Sheet
)
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Characteristic Curves (continued)
The following figures provide typical characteristics for the MicroLynxTM II 12V SIP modules at 25ºC.
4.5
4
3.5
(A)
IN
3
2.5
2
1. 5
1
0.5
INPUT CURRENT, I
0
7 8 91011121314
INPUT VOLTAGE, VIN (V
Figure 7. Input voltage vs. Input Current
(Vout = 5Vdc).
Io = 6 A
Io=3 A
Io=0 A
(V) (100mV/div)
O
(A) (2A/div) V
O
OUTPUT CURRENT, OUTPUT VOLTAGE
I
TIME, t (5 μs/div)
Figure 10. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 3.3Vdc).
(V) (10mV/div)
O
V
OUTPUT VOLTAGE
TIME, t (2μs/div) TIME, t (5 μs/div)
Figure 8. Typical Output Ripple and Noise
(Vin = 12V dc, Vo = 2.5 Vdc, Io=6A).
(V) (10mV/div)
O
OUTPUT VOLTAGE
V
TIME, t (2μs/div) TIME, t (10μs/div)
Figure 9. Typical Output Ripple and Noise
(Vin = 12.0V dc, Vo = 3.3 Vdc, Io=6A).
(V) (100mV/div)
O
(A) (2A/div) V
O
OUTPUT CURRENT, OUTPUT VOLTAGE
I
Figure 11. Transient Response to Dynamic Load
Change from 100% to 50% of full load (Vo = 3.3 Vdc).
(V) (100mV/div)
O
(A) (2A/div) V
O
OUTPUT CURRENT, OUTPUT VOLTAGE
I
Figure 12. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 5.0 Vdc,
Cext = 2x150 μF Polymer Capacitors).
LINEAGE POWER 7
Page 8
Data Sheet
(
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Characteristic Curves (continued)
The following figures provide typical characteristics for the Austin MicroLynxTM II 12V SIP modules at 25ºC.
(V) (5V/div)
IN
(V) (100mV/div)
O
(A) (2A/div) V
O
OUTPUT CURRENT OUTPUTVOLTAGE
I
TIME, t (10μs/div)
Figure 13. Transient Response to Dynamic Load
Change from 100% of 50% full load (Vo = 5.0 Vdc, Cext
= 2x150 μF Polymer Capacitors).
(V) (5V/div)
On/off
V) (2V/div) V
O
V
OUTPUT VOLTAGE On/Off VOLTAGE
TIME, t (1 ms/div) TIME, t (1 ms/div)
Figure 14. Typical Start-Up Using Remote On/Off
(Vin = 12Vdc, Vo = 3.3Vdc, Io = 6.0A).
(V) (2V/div)
On/off
(V) (2V/div) V
o
OUTPUT VOLTAGE, INPUT VOLTAGE
V
TIME, t (1 ms/div)
Figure 16. Typical Start-Up with application of Vin with
(Vin = 12Vdc, Vo = 3.3Vdc, Io = 6A).
(V) (2V/div)
On/off
V) (1V/div) V
O
V
OUTPUT VOLTAGE On/Off VOLTAGE
Figure 17 Typical Start-Up using Remote On/off with
Prebias (Vin = 12Vdc, Vo = 1.8Vdc, Io = 1A, Vbias =1.0
Vdc).
(A) (5A/div)
O
V) (1V/div) V
O
V
OUTPUT VOLTAGE On/Off VOLTAGE
igure 15. Typical Start-Up Using Remote On/Off with
F
Low-ESR external capacitors (7x150uF Polymer)
TIME, t (1 ms/div) TIME, t (20ms/div)
OUTPUT CURRENT,
I
Figure 18. Output short circuit Current (Vin = 12Vdc,
Vo = 0.75Vdc).
Vin = 12Vdc, Vo = 3.3Vdc, Io = 6.0A, Co = 1050μF).
LINEAGE POWER 8
Page 9
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Characteristic Curves (continued)
The following figures provide thermal derating curves for the Austin MicroLynxTM II 12V SIP modules.
7
6
5
NC
4
0.5m/s (100 LFM)
3
1.0m/s (200 LFM )
2
1. 5m/ s ( 30 0 LF M)
1
2.0m/s (400 LFM)
0
OUTPUT CURRENT, Io (A)
20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 19. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=0.75Vdc).
7
6
5
NC
4
0.5m/ s (100 LFM)
3
1.0m/s (200 LFM)
2
1. 5m/ s (3 00 LFM )
1
2.0m/s (400 LFM)
0
OUTPUT CURRENT, Io (A)
20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 20. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=1.8 Vdc).
7
6
5
NC
4
0 .5m/ s (100 LFM )
3
1.0m/s (200 LFM )
2
1. 5m/ s ( 30 0 LFM )
1
2.0m/s (400 LFM )
0
OUTPUT CURRENT, Io (A)
20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE, TA OC
Figure 21. Derating Output Current versus Local
Ambient Temperature and Airflow
(Vin = 12Vdc,
Vo=2.5 Vdc).
7
6
5
NC
4
0.5m/ s (100 LFM )
3
1.0m/s (200 LFM)
2
1. 5m/ s ( 30 0 LFM )
1
2.0m/s (400 LFM)
0
OUTPUT CURRENT, Io (A)
20 30 40 50 60 70 80 90
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=3.3 Vdc).
7
6
5
NC
4
0.5m/s (100 LFM )
3
1. 0 m/ s ( 2 0 0 LF M )
2
1. 5m / s ( 3 0 0 L FM )
1
2.0m/s (400 LFM )
0
OUTPUT CURRENT, Io (A)
20 30 40 50 60 70 80 90
Figure 23. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=5.0 Vdc).
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Page 10
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Test Configurations
TO OSCILLOSCOPE
L
TEST
1μH
CS 1000μF
BATTERY
NOTE: Measure input reflected ripple current with a simulated
Electrolytic
E.S.R.<0.1Ω
@ 20°C 100kHz
source inductance (L
possible battery impedance. Measure current as shown
above.
) of 1μH. Capacitor CS offsets
TEST
Figure 24. Input Reflected Ripple Current Test
Setup.
COPPER STRIP
V
(+)
O
1uF .
COM
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measuremen t errors due to socket contac t
resistance.
10uF
GROUND PLANE
Figure 25. Output Ripple and Noise Test Setup.
R
R
contact
distribution
R
distribution
R
contact
VIN(+)
V
IN
COM
SCOPE
V
O
COM
CIN
2x100μF
Tantalum
V
O
CURRENT PROBE
VIN(+)
COM
RESISTIVE
LOAD
R
contact Rdistribution
R
contact Rdistribution
R
LOAD
Design Considerations
Input Filtering
The Austin MicroLynxTM II 12V SIP module should
be connected to a low-impedance source. A
highly inductive source can affect the stability of
the module. An input capacitance must be placed
directly adjacent to the input pin of the module, to
minimize input ripple voltage and ensure module
stability.
In a typical application, 2x47 µF low-ESR tantalum
capacitors (AVX part #: TPSE476M025R0100,
47µF 25V 100 mΩ ESR tantalum capacitor) will be
sufficient to provide adequate ripple voltage at the
input of the module. To minimize ripple voltage at
the input, low ESR ceramic capacitors are
recommended at the input of the module. Figure
27 shows input ripple voltage (mVp-p) for various
outputs with 2x47 µF tantalum capacitors and with
2x 22 µF ceramic capacitor (TDK part #:
C4532X5R1C226M) at full load.
350
300
250
200
15 0
10 0
50
0
0 123456
Tant alum
Ceramic
Input Ripple Voltage (mVp-p)
Output Voltage (Vdc)
Figure 27. Input ripple voltage for various output
with 2x47 µF tantalum capacitors and with 2x22
µF ceramic capacitors at the input (80% of
Io,max).
NOTE: All vol tage m easuremen ts to b e taken at the m odule
termin als, as sh own ab ove. If s oc kets a re used then
Kelvin c onnecti ons are r equired at the module t erminals
to avoid meas uremen t errors due to socket c ontact
resistance.
Figure 26. Output Voltage and Efficiency Test
Setup.
V
O.IO
Efficiency
=
η
VIN.I
IN
x 100 %
LINEAGE POWER 10
Page 11
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Design Considerations (continued)
Output Filtering
The Austin MicroLynxTM II 12V SIP module is
designed for low output ripple voltage and will meet
the maximum output ripple specification with 1 µF
ceramic and 10 µF polymer capacitors at the output of
the module. However, additional output filtering may
be required by the system designer for a number of
reasons. First, there may be a need to further reduce
the output ripple and noise of the module. Second,
the dynamic response characteristics may need to be
customized to a particular load step change.
To reduce the output ripple and improve the dynamic
response to a step load change, additional
capacitance at the output can be used. Low ESR
polymer and ceramic capacitors are recommended to
improve the dynamic response of the module. For
stable operation of the module, limit the capacitance
to less than the maximum output capacitance as
specified in the electrical specification table.
Safety Considerations
For safety agency approval the power module must
be installed in compliance with the spacing and
separation requirements of the end-use safety agency
standards, i.e., UL 60950-1, CSA C22.2 No. 60950-103, and VDE 0850:2001-12 (EN60950-1) Licensed.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power
module has extra-low voltage (ELV) outputs when all
inputs are ELV.
The input to these units is to be provided with a fastacting fuse with a maximum rating of 6A in the
positive input lead
.
LINEAGE POWER 11
Page 12
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Feature Description
Remote On/Off
Austin MicroLynxTM II 12V SIP power modules
feature an On/Off pin for remote On/Off operation.
Two On/Off logic options are available in the Austin
MicroLynx
On/Off signal, device code suffix “4”, turns the module
ON during a logic High on the On/Off pin and turns
the module OFF during a logic Low. Negative logic
On/Off signal, no device code suffix, turns the module
OFF during logic High and turns the module ON
during logic Low.
For positive logic modules, the circuit configuration for
using the On/Off pin is shown in Figure 28. The
On/Off pin is an open collector/drain logic input signal
(Von/Off) that is referenced to ground. During a logichigh (On/Off pin is pulled high internal to the module)
when the transistor Q1 is in the Off state, the power
module is ON. Maximum allowable leakage current of
the transistor when Von/off = V
Applying a logic-low when the transistor Q1 is turnedOn, the power module is OFF. During this state
VOn/Off must be less than 0.3V. When not using
positive logic On/off pin, leave the pin unconnected or
tie to V
I
ON/OFF
Figure 28. Circuit configuration for using positive
logic On/OFF.
For negative logic On/Off devices, the circuit
configuration is shown is Figure 29. The On/Off pin is
pulled high with an external pull-up resistor (typical
pull-up = 68k, +/- 5%). When transistor Q1 is in the
R
Off state, logic High is applied to the On/Off pin and
the power module is Off. The minimum On/off voltage
for logic High on the On/Off pin is 2.5 Vdc. To turn
the module ON, logic Low is applied to the On/Off pin
by turning ON Q1. When not using the negative logic
On/Off, leave the pin unconnected or tie to GND.
VIN+
GND
TM
II 12V series modules. Positive Logic
is 10µA.
IN,max
IN.
R2
ON/OFF
V
ON/OFF
Q1
+
_
R1
Q2
R3
R4
MODULE
PWM Enable
Q3 CSS
VIN+
MODULE
PWM Enable
R1
Q2 CSS
R2
ON/OFF
GND
R
pull-up
I
ON/OFF
V
ON/OFF
Q1
+
_
Figure 29. Circuit configuration for using
negative logic On/OFF.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought
back into its specified range. The typical average
output current during hiccup is 2A.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, module operation is disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Overtemperature Protection
To provide over temperature protection in a fault
condition, the unit relies upon the thermal protection
feature of the controller IC. The unit will shutdown if
the thermal reference point T
exceeds 140
o
C (typical), but the thermal shutdown is
not intended as a guarantee that the unit will survive
temperatures beyond its rating. The module will
automatically restarts after it cools down.
, (see Figure 33)
ref2
LINEAGE POWER 12
Page 13
Data Sheet
V
(
K
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Feature Descriptions (continued)
Output Voltage Programming
The output voltage of the Austin MicroLynxTM II 12V
SIP can be programmed to any voltage from 0.75Vdc
to 5.5Vdc by connecting a resistor (shown as Rtrim in
Figure 30) between Trim and GND pins of the
module. Without an external resistor between Trim
and GND pins, the output of the module will be
0.7525Vdc. To calculate the value of the trim resistor,
Rtrim for a desired output voltage, use the following
equation:
Rtrim
⎢
−
7525.0
Vo
⎣
10500
⎡
= 1000
Rtrim is the external resistor in Ω
Vo is the desired output voltage
For example, to program the output voltage of the
Austin MicroLynx
TM
12V module to 1.8V, Rtrim is
calculated as follows:
Rtrim
V
(+)
IN
ON/OFF
GND
⎢
−
⎣
V
(+)
O
7525.08.1
TRIM
10500
⎡
= 1000
Figure 30. Circuit configuration to program
output voltage using an external resistor
Table 1 provides Rtrim values for most com
output voltages.
Table 1
(V) Rtrim
O, set
0.7525 Open
1.2 22.46
1.5 13.05
1.8 9.024
2.5 5.009
3.3 3.122
5.5 1.472
⎤
Ω
−
−
Ω=kRtrim 024.9
⎥
⎦
⎤
⎥
⎦
LOAD
R
trim
mon
Ω)
Using 1% tolerance trim resistor, set point tolerance
of ±2% is achieved as specified in the electrical
specification. The POL Programming Tool, available
at www.lineagepower.com under the Design Tools
section, helps determine the required external trim
resistor needed for a specific output voltage.
The amount of power delivered by the module is
defined as the voltage at the output terminals
multiplied by the output current. When using the
trim feature, the output voltage of the module can
be increased, which at the same output current
would increase the power output of the module.
Care should be taken to ensure that the maximum
output power of the module remains at or below the
= V
x I
maximum rated power (P
max
o,set
o,max
).
Voltage Margining
Output voltage margining can be implemented in
the Austin MicroLynx
resistor, R
margin-up
margining-up the output voltage and by connecting
a resistor, R
margin-down
Figure 31 shows the circuit configuration for output
voltage margining. The POL Programming Tool,
available at www.lineagepower.com under the
Design Tools section, also calculates the values of
margin-up
and R
R
voltage and % margin. Please consult your Lineage
Power technical representative for additional details
Austin Lynx or
Lynx II Series
Figure 31. Circuit Configuration for margining
Output voltage.
TM
II modules by connecting a
, from Trim pin to ground pin for
, from Trim pin to Output pin.
margin-down
for a specific output
Vo
Rmargin-down
Q2
Trim
Rmargin-up
Rtrim
Q1
GND
LINEAGE POWER 13
Page 14
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Feature Descriptions (continued)
Voltage Sequencing
Austin MicroLynxTM II 12V series of modules include a
sequencing feature, EZ-SEQUENCE
users to implement various types of output voltage
sequencing in their applications. This is
accomplished via an additional sequencing pin.
When not using the sequencing feature, either tie the
SEQ pin to V
IN or leave it unconnected.
When an analog voltage is applied to the SEQ pin,
the output voltage tracks this voltage until the output
reaches the set-point voltage. The SEQ voltage must
be set higher than the set-point voltage of the module.
The output voltage follows the voltage on the SEQ pin
on a one-to-one volt basis. By connecting multiple
modules together, customers can get multiple
modules to track their output voltages to the voltage
applied on the SEQ pin.
For proper voltage sequencing, first, input voltage is
applied to the module. The On/Off pin of the module
is left unconnected (or tied to GND for negative logic
modules or tied to V
IN 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 setpoint voltage. To initiate simultaneous shutdown of
the modules, the SEQ pin voltage is lowered in a
controlled manner. Output voltage of the modules
tracks the voltages below their set-point voltages on a
one-to-one basis. A valid input voltage must be
maintained until the tracking and output voltages
reach ground potential to ensure a controlled
shutdown of the modules.
When using the EZ-SEQUENCE
start-up of the module, pre-bias immunity feature
during start-up is disabled. The pre-bias immunity
feature of the module relies on the module being in
the diode-mode during start-up. When using the EZSEQUENCE
TM
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-SEQUENCE
TM
feature of Austin MicroLynxTM II
12V, contact your Lineage Power technical
TM
that enables
TM
feature to control
representative for preliminary application note on
output voltage sequencing using Austin Lynx II series.
LINEAGE POWER 14
Page 15
Data Sheet
A
W
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Thermal Considerations Thermal Considerations
Power modules operate in a variety of thermal
Power modules operate in a variety of thermal
environments; however, sufficient cooling should be
environments; however, sufficient cooling should be
provided to help ensure reliable operation.
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability. The
the module will result in an increase in reliability. The
thermal data presented here is based on physical
thermal data presented here is based on physical
measurements taken in a wind tunnel. The test set-
measurements taken in a wind tunnel. The test setup is shown in Figure 33. Note that the airflow is
up is shown in Figure 33. Note that the airflow is
parallel to the long axis of the module as shown in
parallel to the long axis of the module as shown in
Figure 32. The derating data applies to airflow in
Figure 32. The derating data applies to airflow in
either direction of the module’s long axis.
either direction of the module’s long axis.
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.
25.4_
ind Tunnel
PWBs
(1.0)
Power Module
Air Flow
T
(inductor winding)
ref1
Top View
T
Bottom View
Figure 32. T
location.
The thermal reference point, T
specifications of thermal derating curves is shown in
Figure 32. For reliable operation this temperature
should not exceed 125
The output power of the module should not exceed
the rated power of the module (Vo,set x Io,max).
Temperature measurement
ref
used in the
ref 1
o
C.
ref2
76.2_
(3.0)
x
Probe Location
7.24_
(0.285)
for measuring
airflow and
ambient
temperature
ir
flow
Figure 33. Thermal Test Set-up.
Heat Transfer via Convection
Increased airflow over the module enhances the
heat transfer via convection. Thermal derating
curves showing the maximum output current that
can be delivered by various module versus local
ambient temperature (TA) for natural convection and
up to 1m/s (200 ft./min) are shown in the
Characteristics Curves section.
LINEAGE POWER 15
Page 16
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Post solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power
Modules: Soldering and Cleaning Application Note.
Through-Hole Lead-Free Soldering Information
The RoHS-compliant through-hole products use the
SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. They are designed to be processed
through single or dual wave soldering machines. The
pins have an RoHS-compliant finish that is compatible
with both Pb and Pb-free wave soldering processes.
A maximum preheat rate of 3°C/s is suggested. The
wave preheat process should be such that the
temperature of the power module board is kept below
210°C. For Pb solder, the recommended pot
temperature is 260°C, while the Pb-free solder pot is
270°C max. Not all RoHS-compliant through-hole
products can be processed with paste-through-hole
Pb or Pb-free reflow process. If additional information
is needed, please consult with your Lineage Power
technical representative for more details.
LINEAGE POWER 16
Page 17
x IITM12V SIP Non-isolated Power Modules:Data Sheet
January 18, 2010
Austin MicroLyn
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Mechanical Outline
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
Top View
Side View
Bottom View
PIN FUNCTION
1 Vo
2 Trim
3 GND
A SEQ
4 VIN
5 On/Off
LINEAGE POWER 17
Page 18
Data Sheet
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A 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] cated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
PIN PIN FUNCTION FUNCTION
1 Vo
2 Trim
3 GND
A SEQ
4 VIN
5 On/Off
Through Hole Pad Layout – Back view
LINEAGE POWER 18
Page 19
Data Sheet
a
©
January 18, 2010
Austin MicroLynx IITM12V SIP Non-isolated Power Modules:
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 2. Device Codes
Device Code
Input
Voltage
Output
Voltage
Output
Current
Efficiency
3.3V@ 6A
Connector
Type
Comcodes
ATA006A0X 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP 108989034
ATA006A0XZ 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP CC109101763
ATA006A0X4 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP 108989042
ATA006A0X4Z 8.3 – 14Vdc 0.75 – 5.5Vdc 6 A 89.0% SIP CC109104642
-Z refers to RoHS-compliant versions.
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Tel: +65 6593 7211
World Wide Headquarters
Lineage Power Corporation
601 Shiloh Road, Plano, TX 75 074, USA
+1-800 -526-7819
(Outsi de U.S.A.: +1-97 2-244 -9428)
www.lineagepower.com
e-mail: techsupport1@lineagepower.com
Linea ge Powe r reserve s the r ight to mak e change s to the p rod uct(s) o r informat ion contained her ein with out notice. No l iability is assum ed as a r esult o f their u se or
pplication . No righ ts u nder any patent accompany the sale of any such product(s) or information.
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LINEAGE POWER 19
Document No: DS04-025 ver. 1.33
PDF name: microlynx_II_12v_sip_ds.pdf
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