LINEAGEPOWER AXH010A0X3Z

Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 10A Output Current
Features
RoHS Compliant
ƒ
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
ƒ
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
ƒ
Delivers up to 10A output current
ƒ
High efficiency – 95% at 3.3V full load (VIN = 5.0V)
ƒ
Small size and low profile:
50.8 mm x 12.7 mm x 8.10 mm
(2.00 in x 0.5 in x 0.32 in)
ƒ
Low output ripple and noise
ƒ
High Reliability:
Applications
Calculated MTBF = 15.7 M hours at 25oC Full-load
ƒ
Distributed power architectures
ƒ
Constant switching frequency (300 kHz)
ƒ
Intermediate bus voltage applications
ƒ
ƒ
Telecommunications equipment
Output voltage programmable from 0.75 Vdc to
3.63Vdc via external resistor
ƒ
Servers and storage applications
ƒ
Line Regulation: 0.3% (typical)
ƒ
Networking equipment
ƒ
Load Regulation: 0.4% (typical)
ƒ
Enterprise Networks
ƒ
Temperature Regulation: 0.4 % (typical)
ƒ
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
ƒ
Remote On/Off
ƒ
Remote Sense
ƒ
Over temperature protection
ƒ
Output overcurrent protection (non-latching)
ƒ
Wide operating temperature range (-40°C to 85°C)
ƒ
UL* 60950-1Recognized, CSA C22.2 No. 60950-103 Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
ƒ
ISO** 9001 and ISO 14001 certified manufacturing
facilities
†
Description
Austin LynxTM SIP power modules are non-isolated dc-dc converters that can deliver up to 10A of output current
with full load efficiency of 95% at 3.3V output. These modules provide a precisely regulated output voltage
programmable via an external resistor from 0.75Vdc to 3.63Vdc over a wide range of input voltage (VIN = 3.0 –
5.5Vdc). Their open-frame 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
‡
Document No: DS05-007 ver. 1.41
PDF name: lynx_sip_x3_ds.pdf
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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
5.8
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
Operating Input Voltage
All
VIN
3.0
Typ
Max
Unit
5.5
Vdc
Maximum Input Current
All
IIN,max
10
Adc
VO,set = 0.75Vdc
IIN,No load
25
mA
VO,set = 3.3Vdc
IIN,No load
30
mA
All
IIN,stand-by
1.5
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
100
Input Ripple Rejection (120Hz)
All
30
(VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc)
Input No Load Current
(VIN = 5.0Vdc, IO = 0, module enabled)
Input Stand-by Current
(VIN = 5.0Vdc, module disabled)
2
0.1
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 15A,
time-delay fuse (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 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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
-3.0%
⎯
+3%
% VO, set
All
VO
0.7525
3.63
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
⎯
8
15
mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
⎯
25
50
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
10
Adc
Output Current Limit Inception (Hiccup Mode )
All
IO, lim
⎯
200
⎯
% Io
All
IO, s/c
⎯
3
⎯
Adc
(VO= 90% of VO, set)
Output Short-Circuit Current
(VO≤250mV) ( Hiccup Mode )
Efficiency
VO,set = 0.75Vdc
η
82.5
%
VIN= VIN, nom, TA=25°C
VO, set = 1.2Vdc
η
88.0
%
IO=IO, max , VO= VO,set
VO,set = 1.5Vdc
η
89.5
%
VO,set = 1.8Vdc
η
91.0
%
VO,set = 2.5Vdc
η
93.0
%
VO,set = 3.3Vdc
η
95.0
%
All
fsw
⎯
300
⎯
kHz
All
Vpk
⎯
200
⎯
mV
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
Switching Frequency
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
Peak Deviation
Settling Time (Vo<10% peak deviation)
LINEAGE POWER
3
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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
⎯
100
⎯
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
⎯
100
⎯
μs
General Specifications
Parameter
Min
Calculated MTBF (IO=IO, max, TA=25°C)
Telecordia SR-332 Issue 1: Method 1 Case 3
Weight
LINEAGE POWER
Typ
Max
15,726,000
⎯
5.6 (0.2)
Unit
Hours
⎯
g (oz.)
4
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 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
Min
Typ
Max
Input High Voltage (Module OFF)
All
VIH
Input High Current
All
IIH
Input Low Voltage (Module ON)
All
Input Low Current
All
Unit
1.5
―
VIN,max
V
―
0.2
1
mA
VIL
-0.2
―
0.3
V
IIL
―
―
10
μA
All
Tdelay
―
3.9
―
msec
All
Tdelay
―
3.9
―
msec
All
Trise
―
4.2
8.5
msec
―
1
% VO, set
―
―
0.5
V
⎯
125
⎯
°C
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
Logic Low
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
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
All
2.2
V
Turn-off Threshold
All
2.0
V
LINEAGE POWER
5
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Characteristic Curves
TM
The following figures provide typical characteristics for the Austin Lynx
90
SIP modules at 25ºC.
96
VIN = 3.0V
93
87
EFFICIENCY, (η)
EFFICIENCY, (η)
90
84
81
78
VIN = 5.0V
75
VIN = 5.5V
72
87
84
81
VIN = 3.0V
78
VIN = 5.0V
75
VIN = 5.5V
72
0
2.5
5
7.5
10
0
OUTPUT CURRENT, IO (A)
2.5
5
7.5
10
OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current
(Vout = 0.75Vdc).
Figure 4. Converter Efficiency versus Output Current
(Vout = 1.8Vdc).
100
93
97
90
94
EFFICIENCY, (η)
EFFICIENCY, (η)
87
84
81
VIN = 3.0V
78
VIN = 5.0V
75
VIN = 5.5V
85
82
VIN = 3.0V
79
VIN = 5.0V
76
VIN = 5.5V
73
72
0
2.5
5
7.5
0
10
OUTPUT CURRENT, IO (A)
Figure 2. Converter Efficiency versus Output Current
(Vout = 1.2Vdc).
100
91
97
88
94
85
91
79
VIN = 3.0V
76
VIN = 5.0V
73
VIN = 5.5V
5
7.5
10
OUTPUT CURRENT, IO (A)
94
82
2.5
Figure 5. Converter Efficiency versus Output Current
(Vout = 2.5Vdc).
EFFICIENCY, (η)
EFFICIENCY, (η)
91
88
88
85
VIN = 4.5V
82
VIN = 5.0V
79
VIN = 5.5V
76
70
0
2.5
5
7.5
10
OUTPUT CURRENT, IO (A)
Figure 3. Converter Efficiency versus Output Current
(Vout = 1.5Vdc).
LINEAGE POWER
0
2.5
5
7.5
10
OUTPUT CURRENT, IO (A)
Figure 6. Converter Efficiency versus Output Current
(Vout = 3.3Vdc).
6
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Characteristic Curves (continued)
TM
Io=5A
INPUT CURRENT, IIN (A)
8
Io=0A
7
6
5
4
3
2
1
0
0.5
1.5
2.5
3.5
4.5
5.5
VO (V) (200mV/div)
Io=10A
9
INPUT VOLTAGE, VIN (V)
TIME, t (2μs/div)
Figure 9. Typical Output Ripple and Noise (Vin = 5.0V
dc, Vo = 3.3 Vdc, Io=10A).
LINEAGE POWER
IO (A) (5A/div)
VO (V) (200mV/div)
Figure 11. Transient Response to Dynamic Load
Change from 100% to 50% of full load (Vo = 3.3 Vdc).
VO (V) (20mV/div)
Figure 8. Typical Output Ripple and Noise (Vin = 5.0V
dc, Vo = 0.75Vdc, Io=10A).
OUTPUT CURRENT, OUTPUT VOLTAGE
TIME, t (10μs/div)
OUTPUT VOLTAGE
TIME, t (2μs/div)
TIME, t (10μs/div)
Figure 10. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 3.3Vdc).
OUTPUT CURRENT, OUTPUT VOLTAG
IO (A) (5A/div)
VO (V) (200mV/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
Figure 7. Input voltage vs. Input Current (Vo =
2.5Vdc).
SIP modules at 25ºC.
IO (A) (5A/div)
10
OUTPUT CURRENT, OUTPUT VOLTAGE
The following figures provide typical characteristics for the Austin Lynx
TIME, t (20μs/div)
Figure 12. Transient Response to Dynamic Load
Change from 50% to 100% of full load (Vo = 3.3 Vdc,
Cext = 2x150 μF Polymer Capacitors).
7
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Characteristic Curves (continued)
VOV) (1V/div)
Low-ESR external capacitors (Vin = 5.5Vdc, Vo =
3.3Vdc, Io = 10.0A, Co = 1050μF).
LINEAGE POWER
VNN (V) (2V/div)
VOV) (1V/div)
OUTPUT VOLTAGE
INPUT VOLTAGE
TIME, t (2 ms/div)
Figure 15. Typical Start-Up Using Remote On/Off with
VOn/off (V) (2V/div)
TIME, t (2 ms/div)
Figure 17 Typical Start-Up Using Remote On/Off with
Prebias (Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A, Vbias
=1.0Vdc).
OUTPUT CURRENT,
On/Off VOLTAGE
VOn/off (V) (2V/div)
OUTPUT VOLTAGE
Figure 14. Typical Start-Up Using Remote On/Off (Vin
= 5.0Vdc, Vo = 3.3Vdc, Io = 10.0A).
On/Off VOLTAGE
VOn/off (V) (2V/div)
VOV) (1V/div)
TIME, t (2 ms/div)
Figure 16. Typical Start-Up with application of Vin
(Vin = 5.5Vdc, Vo = 3.3Vdc, Io = 10A).
VOV) (1V/div)
On/Off VOLTAGE
OUTPUT VOLTAGE
Figure 13. Transient Response to Dynamic Load
Change from 100% of 50% full load (Vo = 3.3 Vdc, Cext
= 2x150 μF Polymer Capacitors).
TIME, t (2 ms/div)
OUTPUT VOLTAGE
TIME, t (20μs/div)
IO (A) (10A/div)
VO (V) (200mV/div)
IO (A) (5A/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
The following figures provide typical characteristics for the Austin LynxTM SMT modules at 25ºC.
TIME, t (10ms/div)
Figure 18. Output short circuit Current (Vin =
5.0Vdc, Vo = 0.75Vdc).
8
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Characteristic Curves (continued)
12
12
10
10
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
The following figures provide thermal derating curves for the Austin Lynx
8
6
4
NC
2
100 LFM
0
20
30
40
50
60
70
80
TM
SIP modules.
8
6
4
NC
2
100 LFM
0
90
20
O
AMBIENT TEMPERATURE, TA C
10
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
10
8
6
4
NC
2
100 LFM
0
50
60
70
80
60
70
80
90
AMBIENT TEMPERATURE, TA C
12
40
50
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 5.0Vdc,
Vo=3.3 Vdc).
12
30
40
O
Figure 19. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 5.0Vdc,
Vo=0.75Vdc).
20
30
90
O
8
6
4
NC
2
0
20
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
AMBIENT TEMPERATURE, TA C
Figure 20. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 5.0Vdc,
Vo=1.8 Vdc).
Figure 23. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 3.3Vdc,
Vo=2.5 Vdc).
OUTPUT CURRENT, Io (A)
12
10
8
6
4
NC
2
100 LFM
0
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 = 5.0Vdc,
Vo=2.5 Vdc).
LINEAGE POWER
9
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Test Configurations
Design Considerations
CURRENT PROBE
TO OSCILLOSCOPE
LTEST
VIN(+)
BATTERY
1μH
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 24. Input Reflected Ripple Current Test
Setup.
VO (+)
RESISTIVE
LOAD
1uF
.
10uF
Austin LynxTM 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.
To minimize input voltage ripple, low-ESR polymer and
ceramic capacitors are recommended at the input of the
module. Figure 27 shows input ripple voltage (mVp-p)
for various outputs with 1x150 µF polymer capacitors
(Panasonic p/n: EEFUE0J151R, Sanyo p/n:
6TPE150M) in parallel with 1 x 47 µF ceramic capacitor
(Panasonic p/n: ECJ-5YB0J476M, Taiyo- Yuden p/n:
CEJMK432BJ476MMT) at full load. Figure 28 shows
the input ripple with 3x150 µF polymer capacitors in
parallel with 2 x 47 µF ceramic capacitor at full load.
Input Ripple Voltage (mVp-p)
COPPER STRIP
Input Filtering
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.
180
160
140
120
100
80
60
0
0.5
Rcontact
VIN(+)
RLOAD
VO
VIN
Rdistribution
Rcontact
Rcontact
COM
Rdistribution
VO
Rdistribution
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.
Figure 26. Output Voltage and Efficiency Test Setup.
VO. IO
Efficiency
η =
LINEAGE POWER
VIN. IIN
x
100 %
1
1.5
2
2.5
3
3.5
Output Voltage (Vdc)
Figure 27. Input ripple voltage for various output
with 1x150 µF polymer and 1x47 µF ceramic
capacitors at the input (full load).
120
Input Ripple Voltage (mVp-p)
Rcontact
5Vin
20
Figure 25. Output Ripple and Noise Test Setup.
Rdistribution
3.3Vin
40
100
80
60
40
3.3Vin
20
5Vin
0
0.5
1
1.5
2
2.5
3
3.5
Output Voltage (Vdc)
Figure 28. Input ripple voltage for various output
with 3x150 µF polymer and 2x47 µF ceramic
capacitors at the input (full load)
10
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
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.
The Austin LynxTM SIP 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
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Feature Description
Remote On/Off
The Austin LynxTM power modules feature an an On/Off
pin for remote On/Off operation. The On/Off pin is pulled
high with an external pull-up resistor (typical Rpull-up =
68k, ± 5%) as shown in Fig. 28. 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.
VIN+
The output voltage of the Austin LynxTM SIP can be
programmed to any voltage from 0.75 Vdc to 3.3 Vdc by
connecting a single resistor (shown as Rtrim in Figure
31) between the TRIM and GND pins of the module.
Without an external resistor between the 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:
⎡ 21070
⎤
Rtrim = ⎢
− 5110⎥ Ω
Vo
−
0
.
7525
⎣
⎦
For example, to program the output voltage of the
TM
Austin Lynx module to 1.8 Vdc, Rtrim is calculated is
follows:
⎤
⎡ 21070
Rtrim = ⎢
− 5110⎥ Ω
⎦
⎣1.8 − 0.7525
MODULE
Rpull-up
I ON/OFF
Rtrim = 15.004 kΩ
ON/OFF
+
VON/OFF
PWM Enable
R1
Q2
Q1
CSS
V IN(+)
V O(+)
ON/OFF
TRIM
R2
GND
_
LOAD
R trim
Figure 29. Circuit configuration for using positive
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 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.
GND
Figure 31. Circuit configuration for programming
output voltage using an external resistor.
Table 1 provides Rtrim values for some common output
voltages
Table 1
VO, set (V)
Rtrim (KΩ)
0.7525
Open
1.2
41.973
1.5
23.077
1.8
15.004
2.5
6.947
3.3
3.160
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
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 restarts after it cools down.
By using a 1% tolerance trim resistor, set point
tolerance of ±2% is achieved as specified in the
electrical specifications. 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
Output Voltage Programming
LINEAGE POWER
12
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Feature Descriptions (continued)
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).
(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, leave the Remote Sense pin unconnected.
Rdistribution Rcontact
Rcontact Rdistribution
VIN(+)
VO
Sense
Voltage Margining
RLOAD
Output voltage margining can be implemented in the
TM
Austin Lynx modules by connecting a resistor, Rmarginup, from the Trim pin to the ground pin for margining-up
the output voltage and by connecting a resistor, Rmargindown, from the Trim pin to the Output pin for marginingdown. Figure 32 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.
Rdistribution Rcontact
Rcontact Rdistribution
COM
COM
Figure 33. Remote sense circuit configuration
Vo
Rmargin-down
Austin Lynx or
Lynx II Series
Q2
Trim
Rmargin-up
Rtrim
Q1
GND
Figure 32. Circuit Configuration for margining
Output voltage.
Remote Sense
The Austin LynxTM SIP 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 33). 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
LINEAGE POWER
13
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Thermal Considerations
Heat Transfer via Convection
The power modules operate in a variety of thermal
environments; however, sufficient cooling should always
be provided to help ensure reliable operation.
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.
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 34. Note that the airflow is parallel to
the long axis of the module as shown in Figure 35. The
derating data applies to airflow in either direction of the
module’s long axis.
Air Flow
Tref
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
Top View
Figure 35. Tref Temperature measurement location
Post solder Cleaning and Drying
Considerations
76.2_
(3.0)
x
8.3_
(0.325)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Figure 35. Thermal Test Set-up.
The thermal reference point, Tref used in the
specifications is shown in Figure 34. For reliable
o
operation this temperature should not exceed 125 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
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.
14
Data Sheet
April 1, 2008
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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.)
Side View
Side View
Back View
PIN
1
Back View
FUNCTION
Vo
2
Vo
3
Vo,sense
4
Vo
5
GND
6
GND
7
VIN
8
VIN
9
TRIM
10
ON/OFF
LINEAGE POWER
15
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
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.)
Pin
Function
1
Vo
2
Vo
3
Vo,sense
4
Vo
5
GND
6
GND
7
VIN
8
VIN
9
TRIM
10
ON/OFF
LINEAGE POWER
16
Austin LynxTM SIP Non-isolated Power Modules, Programmable:
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
Data Sheet
April 1, 2008
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 2. Device Codes
Input Voltage
Range
Output
Voltage
Output
Current
Efficiency
3.3V @full load
Connector
Type
AXH010A0X3
3.0 – 5.5Vdc
0.75 – 3.63Vdc
10 A
95.0%
TH
108992046
AXH010A0X3Z
3.0 – 5.5Vdc
0.75 – 3.63Vdc
10 A
95.0%
TH
CC109101318
Device Code
Comcodes
* Remote sense feature is active and pin 6 is added with code suffix “3”
-Z refers to RoHS compliant Versions
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
17
Document No: DS05-007 ver. 1.41
PDF name: lynx_sip_x3_ds.pdf