LINEAGEPOWER ATH025A0X3

Data Sheet
June 3, 2009
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 to 3.63Vdc output; 30A Output Current
6.0 – 14Vdc input; 0.8dc to 5.5Vdc output; 25A Output Current
RoHS Compliant
Features
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
ƒ
ƒ
Delivers up to 30A of output current
High efficiency – 93% 3.3V full load (VIN=12Vdc)
Available in two input voltage ranges
ATH: 4.5 to 5.5Vdc
ATS: 6.0 to 14Vdc
ƒ
ATH: 0.8 to 3.63Vdc
Applications
ƒ
Distributed power architectures
ƒ
Intermediate bus voltage applications
ƒ
Telecommunications equipment
ƒ
Servers and storage applications
ƒ
Networking equipment
Output voltage programmable from
ATS: 0.8 to 5.5Vdc
ƒ
Small size and low profile:
50.8 mm x 12.7 mm x 14.0 mm
2.00 in. x 0.50 in. x 0.55 in.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Monotonic start-up into pre-biased output
ƒ
UL* 60950 Recognized, CSA† C22.2 No.
60950-00 Certified, and VDE‡ 0805 (EN60950-1
rd
3 edition) Licensed
ƒ
ISO** 9001 and ISO 14001 certified
manufacturing facilities
Output voltage sequencing (EZ-SEQUENCE
TM
)
Remote On/Off
Remote Sense
Over current and Over temperature protection
Parallel operation with active current sharing
Wide operating temperature range (-40°C to
85°C)
Description
The Austin MegaLynx series SIP power modules are non-isolated DC-DC converters in an industry standard
package that can deliver up to 30A of output current with a full load efficiency of 92% at 3.3Vdc output voltage (VIN =
12Vdc). The ATH series of modules operate off an input voltage from 4.5 to 5.5Vdc and provide an output voltage
that is programmable from 0.8 to 3.63Vdc, while the ATS series of modules have an input voltage range from 6 to
14V and provide a programmable output voltage ranging from 0.8 to 5.5Vdc. Both series have a sequencing feature
that enables designers to implement various types of output voltage sequencing when powering multiple modules
on the board. Additional features include remote On/Off, adjustable output voltage, remote sense, over current,
over temperature protection and active current sharing between modules.
* UL is a registered trademark of Underwriters Laboratories, Inc.
†
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
‡
Document No: DS05-012 ver. 1.04
PDF Name: austin_megalynx_sip.pdf
Data Sheet
June 3, 2009
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Device
Symbol
Min
Max
Unit
Input Voltage
All
VIN
-0.3
15
Vdc
Sequencing pin voltage
Continuous
All
VsEQ
-0.3
15
Vdc
Operating Ambient Temperature
All
TA
-40
85
°C
All
Tstg
-55
125
°C
(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
VIN
4.5
5.0
5.5
Vdc
ATS
VIN
6.0
12
14
Vdc
ATH
IIN,max
27
Adc
ATS
IIN,max
26
Adc
Inrush Transient
All
2
1
A s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance;
VIN=6.0V to 14.0V, IO= IOmax ; See Figure 1)
All
100
mAp-p
Input Ripple Rejection (120Hz)
All
50
dB
Operating Input Voltage
ATH
Maximum Input Current
(VIN= VIN,min , VO= VO,set, IO=IO, max)
LINEAGE POWER
I t
2
2
Data Sheet
June 3, 2009
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Electrical Specifications (continued)
Parameter
Output Voltage Set-point
Device
Symbol
Min
Typ
Max
Unit
All
VO, set
-1.5
⎯
+1.5
% VO, set
All
VO, set
–3.0
+3.0
% VO, set
ATH
VO
0.8
3.63
Vdc
ATS
VO
0.8
5.5
Vdc
(VIN=VIN,min, IO=IO, max, Tref=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
0.1
% VO, set
Load (IO=IO, min to IO, max)
All
0.4
% VO, set
Temperature (Tref=TA, min to TA, max)
All
1
% VO, set
50
mVpk-pk
0.5
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
COUT = 0.01μF // 0.1μF // 10μF ceramic
capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Vo ≤ 2.5V
2.5V < Vo ≤ 3.63V
Vo > 3.63V
75
mVpk-pk
100
mVpk-pk
External Capacitance
ESR ≥ 1 mΩ
All
CO, max
0
2,000
µF
ESR ≥ 10 mΩ
All
CO, max
0
10,000
µF
ATH025/ATS025
Io
0
25
Adc
ATH030
Io
0
30
Adc
Output Current Limit Inception (Hiccup
Mode)
All
IO, lim
120
% Iomax
Output Short-Circuit Current
All
IO, s/c
20
% Iomax
Output Current (VIN = 5Vdc/12Vdc)
Output Current (VIN = 5Vdc)
(VO≤250mV) ( Hiccup Mode )
Efficiency
VO,set = 0.8dc
η
82.0
%
VIN=12Vdc, TA=25°C
VO,set = 1.2Vdc
η
84.0
%
IO=25A , VO= VO,set
VO,set = 1.5Vdc
η
88.0
%
VO,set = 1.8Vdc
η
89.5
%
VO,set = 2.5Vdc
η
91.0
%
VO,set = 3.3Vdc
η
92.5
%
Efficiency
VIN=5Vdc, TA=25°C
IO=30A , VO= VO,set
Switching Frequency, Fixed
LINEAGE POWER
VO,set = 5.0Vdc
η
94.0
%
VO,set = 0.8dc
η
84.0
%
VO,set = 1.2Vdc
η
88.5
%
VO,set = 1.5Vdc
η
90.0
%
VO,set = 1.8Vdc
η
91.0
%
VO,set = 2.5Vdc
η
93.0
%
VO,set = 3.3Vdc
η
All
fsw
95.0
⎯
300
%
⎯
kHz
3
Data Sheet
June 3, 2009
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
(dIO/dt=5A/μs; VIN=VIN, nom; VO=3.3V; TA=25°C;)
Load Change from Io= 0% to 50% of IO,max; No
external output capacitors
Peak Deviation
ATS
Vpk
⎯
350
⎯
mV
Settling Time (VO<10% peak deviation)
ATS
ts
⎯
20
⎯
μs
(dIO/dt=5A/μs; VIN=VIN, nom; VO=3.3V; TA=25°C;)
Load Change from IO= 50% to 0%of IO, max: No
external output capacitors
Peak Deviation
ATS
Vpk
⎯
350
⎯
mV
Settling Time (VO<10% peak deviation)
ATS
ts
⎯
20
⎯
μs
(dIO/dt=5A/μs; VIN=VIN, nom; VO=3.3V; TA=25°C;)
Load Change from Io= 0% to 50% of IO,max; No
external output capacitors
Peak Deviation
ATH
Vpk
⎯
320
⎯
mV
Settling Time (VO<10% peak deviation)
ATH
ts
⎯
20
⎯
μs
(dIO/dt=5A/μs; VIN=VIN, nom; VO=3.3V; TA=25°C)
Load Change from IO= 50% to 0%of IO, max: No
external output capacitors
Peak Deviation
ATH
Vpk
⎯
250
⎯
mV
Settling Time (VO<10% peak deviation)
ATH
ts
⎯
20
⎯
μs
Dynamic Load Response
General Specifications
Parameter
Min
Calculated MTBF (VIN= VIN, nom, IO= 0.8IO, max, TA=40°C)
Telecordia SR 332 Issue 1: Method 1, case 3
Weight
LINEAGE POWER
Typ
Max
3,016,040
⎯
7.4
Unit
Hours
⎯
g
4
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
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
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to GND)
Logic High (Module OFF)
Input High Current
All
IIH
0.5
⎯
3.3
mA
Input High Voltage
All
VIH
3.0
⎯
VIN, max
V
Logic Low (Module ON)
Input Low Current
All
IIL
⎯
⎯
200
µA
Input Low Voltage
All
VIL
-0.3
⎯
1.2
V
All
Tdelay
―
3
msec
All
Tdelay
―
3
msec
All
Trise
―
4
msec
Turn-On Delay and Rise Times
(VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady
state)
Case 1: On/Off input is enabled and then
input power is applied (delay from instant at
which VIN = VIN, min until Vo = 10% of Vo, set)
Case 2: Input power is applied for at least one
second and then the On/Off input is enabled (delay
from instant at which Von/Off is enabled until Vo =
10% of Vo, set)
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot
3.0
% VO, set
o
IO = IO, max; VIN, min – VIN, max, TA = 25 C
Remote Sense Range
Over Temperature Protection
All
⎯
⎯
0.5
V
⎯
125
⎯
°C
—
2
V/msec
All
Tref
All
dVSEQ/dt
to application of voltage on SEQ pin)
All
TsEQ-delay
Tracking Accuracy
All
|VSEQ –Vo,set|
100
200
mV
|VSEQ –Vo,set|
200
400
mV
(See Thermal Consideration section)
Sequencing Slew rate capability
(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)
Sequencing Delay time (Delay from VIN, min
Power-up (2V/ms)
Power-down (1V/ms)
10
msec
(VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo,set)
Input Undervoltage Lockout
Turn-on Threshold
ATH
4.3
Vdc
Turn-off Threshold
ATH
3.9
Vdc
Turn-on Threshold
ATS
5.5
Vdc
Turn-off Threshold
ATS
5.0
Vdc
Forced Load Share Accuracy
-P
Number of units in Parallel
-P
LINEAGE POWER
⎯
10
% Io
5
5
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
The following figures provide typical characteristics for the ATS025A0X (0.8V, 25A) at 25oC.
30
92%
OUTPUT CURRENT, Io (A)
EFFICIENCY, η (%)
89%
86%
83%
80%
77%
VIN = 6.0V
74%
VIN = 12.0V
71%
VIN =14.0V
68%
0
5
10
15
20
LINEAGE POWER
1.5m/s (300 LFM )
5
2.0m/s (400 LFM )
0
30
40
50
60
70
80
90
VOn/off (V) (5V/div)
VO (V) (0.5V/div)
Figure 4. Derating Output Current versus Local
Ambient Temperature and Airflow.
OUTPUT VOLTAGE
Figure 3. Transient Response to Dynamic Load Change
from 0% to 50% to 0% of full load.
1.0m/s (200 LFM )
10
O
On/Off VOLTAGE
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (2ms/div)
OUTPUT VOLTAGE
VO (V) (0.5V/div)
VIN (V) (5V/div)
Figure 5. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (10A/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
TIME, t (5μs /div)
0.5m/s (100 LFM )
15
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
Figure 2. Typical output ripple and noise (VIN = VIN,NOM,
Io = Io,max).
20
20
25
OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current.
25
TIME, t (2ms/div)
Figure 6. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
6
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
o
The following figures provide typical characteristics for the ATS025A0X (1.8V, 25A) at 25 C.
96%
30
OUTPUT CURRENT, Io (A)
93%
EFFICIENCY, η (%)
90%
87%
84%
81%
VIN = 6.0V
78%
VIN = 12.0V
75%
VIN =14.0V
72%
0
5
10
15
20
LINEAGE POWER
1.0m/s (200 LFM )
10
1.5m/ s (300 LFM )
5
2.0m/s (400 LFM )
0
30
40
50
60
70
80
90
O
OUTPUT VOLTAGE
VO (V) (0.5V/div)
VOn/off (V) (5V/div)
Figure 10. Derating Output Current versus Local
Ambient Temperature and Airflow ((VIN = VIN,NOM).
On/Off VOLTAGE
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (2ms/div)
OUTPUT VOLTAGE
VO (V) (0.5V/div)
VIN (V) (5V/div)
Figure 11. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (5A/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
TIME, t (5μs /div)
Figure 9. Transient Response to Dynamic Load
Change from 0% to 50% to 0% of full load.
0.5m/s (100 LFM )
15
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
Figure 8. Typical output ripple and noise (VIN = VIN,NOM,
Io = Io,max).
20
20
25
OUTPUT CURRENT, IO (A)
Figure 7. Converter Efficiency versus Output Current.
25
TIME, t (2ms/div)
Figure 12. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
7
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
The following figures provide typical characteristics for the ATS025A0X (3.3V, 25A) at 25oC.
30
99%
OUTPUT CURRENT, Io (A)
96%
EFFICIENCY, η (%)
93%
90%
87%
84%
VIN = 6.0V
81%
VIN = 12.0V
78%
VIN =14.0V
75%
0
5
10
15
20
LINEAGE POWER
1.0m/s (200 LFM )
10
1.5m/s (300 LFM )
5
2.0m/s (400 LFM )
0
30
40
50
60
70
80
90
AMBIENT TEMPERATURE, TA C
VO (V) (1V/div)
VOn/off (V) (5V/div)
OUTPUT VOLTAGE
Figure 16. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (2ms/div)
OUTPUT VOLTAGE
VO (V) (1V/div)
VIN (V) (5V/div)
Figure 17. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (10A/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
TIME, t (5μs /div)
Figure 15. Transient Response to Dynamic Load
Change from 0% to 50% to 0% of full load.
0.5m/s (100 LFM )
15
O
TIME, t (1μs/div)
Figure 14. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
20
20
25
OUTPUT CURRENT, IO (A)
Figure 13. Converter Efficiency versus Output
Current.
25
TIME, t (2ms/div)
Figure 18. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
8
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
o
The following figures provide typical characteristics for the ATH030A0X (0.8V, 30A) at 25 C.
35
92%
89%
OUTPUT CURRENT, Io (A)
30
EFFICIENCY, η (%)
86%
83%
80%
77%
VIN = 4.5V
74%
VIN = 5.0V
71%
VIN =5.5V
68%
0
6
12
18
24
1.5m/s (300 LFM )
10
2.0m/s (400 LFM )
5
30
40
50
60
70
80
90
O
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (2V/div) VO (V) (0.5V/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (2ms/div)
TIME, t (10μs /div)
Figure 21. Transient Response to Dynamic Load
Change from 0% to 50% to 0% of full load.
OUTPUT VOLTAGE
VO (V) (0.5V/div)
VIN (V) (2V/div)
Figure 23. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
IO (A) (10A/div)
VO (V) (100mV/div)
Figure 20. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
OUTPUT CURRENT, OUTPUT VOLTAGE
1.0m/s (200 LFM )
15
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
LINEAGE POWER
0.5m/s (100 LFM )
20
20
30
OUTPUT CURRENT, IO (A)
Figure 19. Converter Efficiency versus Output
Current.
25
TIME, t (2ms/div)
Figure 24. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
9
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
The following figures provide typical characteristics for the ATH030A0X (1.8V, 30A) at 25oC.
96%
35
OUTPUT CURRENT, Io (A)
93%
EFFICIENCY, η (%)
90%
87%
84%
81%
VIN = 4.5V
78%
VIN = 5.0V
75%
VIN =5.5V
72%
0
6
12
18
24
1.0m/s (200 LFM )
15
1.5m/ s (300 LFM )
10
2.0m/s (400 LFM )
5
30
40
50
60
70
80
90
O
Figure 28. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (2V/div) VO (V) (0.5V/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (2ms/div)
Figure 27. Transient Response to Dynamic Load
Change from 0% to 50% to 0% of full load.
OUTPUT VOLTAGE
VO (V) (0.5V/div)
VIN (V) (2V/div)
TIME, t (10μs /div)
Figure 29. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (10A/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
0.5m/s (100 LFM )
20
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
Figure 26. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
LINEAGE POWER
25
20
30
OUTPUT CURRENT, IO (A)
Figure 25. Converter Efficiency versus Output
Current.
30
TIME, t (2ms/div)
Figure 30. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
10
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Characteristic Curves
o
The following figures provide typical characteristics for the ATH030A0X (3.3V, 30A) at 25 C.
99%
35
OUTPUT CURRENT, Io (A)
96%
EFFICIENCY, η (%)
93%
90%
87%
84%
VIN = 4.5V
81%
VIN = 5.0V
78%
VIN =5.5V
75%
0
6
12
18
24
1.5m/s (300 LFM )
10
2.0m/s (400 LFM )
5
30
40
50
60
70
80
90
O
Figure 34. Derating Output Current versus Local
Ambient Temperature and Airflow.
TIME, t (2ms/div)
TIME, t (10μs /div)
Figure 33. Transient Response to Dynamic Load
Change from 0% to 50% to 0% of full load.
VO (V) (1V/div)
VIN (V) (2V/div)
OUTPUT VOLTAGE
Figure 35. Typical Start-up Using Remote On/Off (VIN =
VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (100mV/div)
IO (A) (10A/div)
1.0m/ s (200 LFM )
15
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (2V/div) VO (V) (1V/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
Figure 32. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
OUTPUT CURRENT, OUTPUT VOLTAGE
0.5m/ s (100 LFM )
20
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
LINEAGE POWER
25
20
30
OUTPUT CURRENT, IO (A)
Figure 31. Converter Efficiency versus Output
Current.
30
TIME, t (2ms/div)
Figure 36. Typical Start-up Using Input Voltage (VIN =
VIN,NOM, Io = Io,max).
11
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Test Configurations
Design Considerations
CURRENT PROBE
TO OSCILLOSCOPE
LTEST
VIN(+)
BATTERY
1μH
CS
CIN
220μF
Min
150μF
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.
The Austin MegaLynxTM module should be connected to
a low-impedance source. A highly inductive source can
affect the stability of the module. An input 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 ceramic
capacitors are recommended at the input of the module.
Figure 41 shows the input ripple voltage for various
output voltages at 25A of load current with 2x22 µF or
4x22 µF ceramic capacitors and an input of 12V. Figure
42 shows data for the 5Vin case, with 2x47µF and
4x47µF of ceramic capacitors at the input, and for a load
current of 30A.
Figure 37. Input Reflected Ripple Current Test Setup.
COPPER STRIP
RESISTIVE
LOAD
SCOPE
GND
0.01uF 0.1uF 10uF
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 38. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact
Rcontact
VIN(+)
Rdistribution
RLOAD
VO
VIN
Rcontact
Rcontact
COM
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.
2 x 22uF
140
4 x 22uF
120
100
80
60
40
20
0
1.5
2
2.5
3
3.5
4
4.5
5
5.5
60
2 x 47uF
50
4 x 47uF
40
30
20
10
0
0.5
Figure 40. Output Voltage and Efficiency Test Setup.
1
Output Voltage (Vdc)
Figure 41. Input ripple voltage for various output
voltages with 2x22 µF or 4x22 µF ceramic capacitors
at the input (25A load). Input voltage is 12V.
Rdistribution
VO
160
0.5
Input Ripple Voltage (mVp-p)
VO (+)
Input Ripple Voltage (mVp-p)
180
1
1.5
2
2.5
3
3.5
Output Voltage (Vdc)
VO. IO
Efficiency
η =
LINEAGE POWER
VIN. IIN
x
100 %
Figure 42. Input ripple voltage in mV, p-p for various
output voltages with 2x47 µF or 4x47 µF ceramic
capacitors at the input (25A load). Input voltage is
5V.
12
Austin MegaLynxTM Non-Isolated dc-dc Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
due to undervoltage lockout or over temperature
protection.
Safety Considerations
For safety agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards,
i.e., UL 60950, CSA C22.2 No. 60950-00, EN60950
(VDE 0850) (IEC60950, 3rd edition) Licensed.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power module
has extra-low voltage (ELV) outputs when all inputs are
ELV.
Feature Descriptions
Remote On/Off
The Austin MegaLynx power modules feature a On/Off
pin for remote On/Off operation. If not using the On/Off
pin, connect the pin to ground (the module will be ON).
The On/Off signal (Von/off) is referenced to ground. Circuit
configuration for remote On/Off operation of the module
using the On/Off pin is shown in Figure 43.
Remote Sense
The Austin MegaLynx 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 44). The voltage between
the Sense pin and the 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 from the module.
Make sure that the maximum output power of the
module remains at or below the maximum rated power.
When the Remote Sense feature is not being used,
connect the Remote Sense pin to output of the module.
R d istribu tio n
R c o n ta c t
R c o nta c t
V IN (+ )
R d istribu tio n
VO
Sense
During a Logic High on the On/Off pin (transistor Q1 is
OFF), the module remains OFF. The external resistor R1
should be chosen to maintain 3.0V minimum on the
On/Off pin to ensure that the module is OFF when
transistor Q1 is in the OFF state. Suitable values for R1
are 4.7K for input voltage of 12V and 3K for 5Vin. During
Logic-Low when Q1 is turned ON, the module is turned
ON.
VIN +
MODULE
R1
Therm al SD
I ON/OFF
ON /OFF
1K
+
VON/OFF
PW M Enable
100K
Q1
R LO AD
R d istribu tio n
R c o n ta c t
R c o nta c t
COM
R d istribu tio n
COM
Figure 44. Effective Circuit Configuration for Remote
Sense operation.
Over Current Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current limiting
continuously. At the point of current-limit inception, the
unit enters hiccup mode. The unit operates normally
once the output current is brought back into its specified
range. The average output current during hiccup is 20%
IO, max.
10K
GN D
_
Figure 43. Remote On/Off Implementation using
ON/OFF.
The On/Off pin can also be used to synchronize the
output voltage start-up and shutdown of multiple
modules in parallel. By connecting together the On/Off
pins of multiple modules, the output start-up can be
synchronized (please refer to characterization curves).
When On/Off pins are connected together, all modules
will shut down if any one of the modules gets disabled
LINEAGE POWER
Over Temperature Protection
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
o
shutdown if the overtemperature threshold of 130 C is
exceeded at the thermal reference point Tref . The
thermal shutdown is not intended as a guarantee that the
unit will survive temperatures beyond its rating. Once
the unit goes into thermal shutdown it will then wait to
cool before attempting to restart.
13
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Input Under Voltage Lockout
Table 1
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Output Voltage Programming
The output voltage of the Austin MegaLynx can be
programmed to any voltage from 0.8dc to 5.0Vdc by
connecting a resistor (shown as Rtrim in Figure 45)
between Trim and GND pins of the module. Without an
external resistor between Trim and GND pins, the output
of the module will be 0.8Vdc. To calculate the value of
the trim resistor, Rtrim for a desired output voltage, use
the following equation:
⎡ 1200
⎤
Rtrim = ⎢
− 100⎥ Ω
⎣Vo − 0.80
⎦
Rtrim is the external resistor in Ω
Vo is the desired output voltage
By using a ±0.5% tolerance trim resistor with a TC of
±100ppm, a set point tolerance of ±1.5% can be
achieved as specified in the electrical specification.
Table 1 provides Rtrim values required for some
common output voltages. The POL Programming Tool,
available at www.lineagepower.com under the Design
Tools section, helps determine the required external trim
resistor needed for a specific output voltage.
V IN(+)
V O(+)
ON/OFF
TRIM
LOAD
VO, set (V)
0.8
1.0
1.2
1.5
1.8
2.5
3.3
5.0
Rtrim (Ω)
Open
5900
2900
1614
1100
606
380
186
Voltage Margining
Output voltage margining can be implemented in the
Austin MegaLynx modules by connecting a resistor,
Rmargin-up, from the Trim pin to the ground pin for
margining-up the output voltage and by connecting a
resistor, Rmargin-down, from the Trim pin to output pin for
margining-down. Figure 46 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.
Voltage Sequencing
The Austin MegaLynx series of modules include a
sequencing feature that enables users to implement
various types of output voltage sequencing in their
applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature,
either leave the SEQ pin unconnected or tied to VIN.
Vo
Rmargin-down
Rtrim
GND
Austin Lynx or
Lynx II Series
Q2
Figure 45. Circuit configuration to program output
voltage using an external resistor.
Trim
Rmargin-up
Rtrim
Q1
GND
Figure 46. Circuit Configuration for margining
Output voltage.
LINEAGE POWER
14
Data Sheet
June 3, 2009
Austin MegaLynxTM Non-Isolated dc-dc Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
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 so that the module is ON by default. After
applying input voltage to the module, a delay of 10msec
minimum is required before applying voltage on the SEQ
pin. During this delay time, the SEQ pin should be kept
at a voltage of 50mV (± 20 mV). After the 10msec delay,
the voltage applied to the SEQ pin is allowed to vary and
the output voltage of the module will track this voltage on
a one-to-one volt basis until the output reaches the setpoint voltage. To initiate simultaneous shutdown of the
modules, the sequence pin voltage is lowered in a
controlled manner. The output voltages of the modules
track the sequence pin voltage when it falls below their
set-point voltages. A valid input voltage must be
maintained until the tracking and output voltages reach
zero to ensure a controlled shutdown of the modules.
For a more detailed description of sequencing, please
refer to Application Note AN04-008 titled “Guidelines
for Sequencing of Multiple Modules”.
When using the EZ-SEQUENCETM feature to control
start-up of the module, pre-bias immunity feature during
start-up is disabled. The pre-bias immunity feature of
the module relies on the module being in the diode-mode
during start-up. When using the EZ-SEQUENCETM
feature, modules goes through an internal set-up time of
10msec, and will be in synchronous rectification mode
when voltage at the SEQ pin is applied. This will result
in sinking current in the module if pre-bias voltage is
present at the output of the module. When pre-bias
immunity during start-up is required, the EZTM
SEQUENCE feature must be disabled.
not be equal. To allow for such variation and avoid
the likelihood of a converter shutting off due to a
current overload, the total capacity of the paralleled
system should be no more than 75% of the sum of
the individual converters. As an example, for a
system of four ATS030A0X3-SR converters the
parallel, the total current drawn should be less that
75% of (4 x 30A) , i.e. less than 90A.
•
All modules should be turned on and off together.
This is so that all modules come up at the same time
avoiding the problem of one converter sourcing
current into the other leading to an overcurrent trip
condition. To ensure that all modules come up
simultaneously, the on/off pins of all paralleled
converters should be tied together and the
converters enabled and disabled using the on/off
pin.
•
The share bus is not designed for redundant
operation and the system will be non-functional
upon failure of one of the unit when multiple units
are in parallel. In particular, if one of the converters
shuts down during operation, the other converters
may also shut down due to their outputs hitting
current limit. In such a situation, unless a
coordinated restart is ensured, the system may
never properly restart since different converters will
try to restart at different times causing an overload
condition and subsequent shutdown. This situation
can be avoided by having an external output voltage
monitor circuit that detects a shutdown condition
and forces all converters to shut down and restart
together.
Active Load Sharing (-P Option)
For additional power requirements, the Austin MegaLynx
series power module is also available with a parallel
option. Up to five modules can be configured, in parallel,
with active load sharing. Good layout techniques should
be observed when using multiple units in parallel. To
implement forced load sharing, the following connections
should be made:
•
The share pins of all units in parallel must be
connected together. The path of these connections
should be as direct as possible.
•
All remote-sense pins should be connected to the
power bus at the same point, i.e., connect all the
SENSE(+) pins to the (+) side of the bus. Close
proximity and directness are necessary for good
noise immunity
Some special considerations apply for design of
converters in parallel operation:
•
When sizing the number of modules required for
parallel operation, take note of the fact that current
sharing has some tolerance. In addition, under
transient condtions such as a dynamic load change
and during startup, all converter output currents will
LINEAGE POWER
15
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should always
be provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of the
module will result in an increase in reliability. The
thermal data presented here is based on physical
measurements taken in a wind tunnel. The test set-up is
shown in Figure 47. Note that the airflow is parallel to
the long axis of the module as shown in Figure 48. The
derating data applies to airflow in either direction of the
module’s long axis.
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
Back View
Figure 48. Tref Temperature measurement location.
The thermal reference point, Tref used in the
specifications is shown in Figure 48. For reliable
operation this temperature should not exceed 125oC.
The output power of the module should not exceed the
rated power of the module (Vo,set x Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.
76.2_
(3.0)
x
12.7_
(0.50)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Figure 47. Thermal Test Set-up.
LINEAGE POWER
16
Austin MegaLynxTM Non-Isolated dc-dc Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Mechanical Outline of Module
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)
BACK SIDE VIEW
Pin out
Pin
Function
1
Vo
2
Vo
3
Sense+
4
Vo
5
GND
6
GND*
7
Share**
8
GND
9
VIN
10
VIN
11
SEQ
12
Trim
13
On/Off
Pin 6 is added in
ATH030A0X3 version
** Pin 7 is paralleling
option
LINEAGE POWER
17
Data Sheet
June 3, 2009
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A 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
18
Data Sheet
June 3, 2009
Austin MegaLynxTM Non-Isolated dc-dc Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
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
19
Austin MegaLynxTM: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 – 3.63Vdc output; 30A output current
6.0 – 14Vdc input; 0.8 – 5.5Vdc output; 25A output current
Data Sheet
June 3, 2009
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 2. Device Codes
0.8 – 3.63Vdc
Output
Current
25A
On/Off
Logic
Negative
Connector
Type
SIP
4.5 – 5.5Vdc
0.8 – 3.63Vdc
25A
Negative
4.5 – 5.5Vdc
0.8 – 3.63Vdc
30A
Negative
4.5 – 5.5Vdc
0.8 – 3.63Vdc
30A
4.5 – 5.5Vdc
0.8 – 3.63Vdc
4.5 – 5.5Vdc
0.8 – 3.63Vdc
6.0 – 14Vdc
0.8– 5.5Vdc
Input Voltage
Output Voltage
4.5 – 5.5Vdc
Product codes
Comcodes
ATH025A0X3
108991980
SIP
ATH025A0X3Z
CC109104774
SIP
ATH030A0X3
108992005
Negative
SIP
ATH030A0X3Z
CC109104782
30A
Negative
SIP
ATH030A0X3-P
108993358
30A
Negative
SIP
ATH030A0X3-PZ
CC109104790
25A
Negative
SIP
ATS025A0X3
108991997
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X3Z
CC109104808
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X53
108997210
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X3-P
108993341
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X3-PZ
CC109104816
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X53-PZ
CC109107752
6.0 – 14Vdc
0.8– 5.5Vdc
25A
Negative
SIP
ATS025A0X3-34Z*
CC109147897
* Special part, consult factory before ordering
Table 3. Device Options
Option
Device Code Suffix
Long pins 5.08mm ± 0.25m (0.2 in. ± 0.010 in.)
-5
Paralleling with active current sharing
-P
RoHS Compliant
-Z
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: +49 898 780 672 80
India Headquarters
Tel: +91 80 28411633
Lineage Power reserves the right to m ake changes to t he product(s) or inf ormation 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 Pow er C orporation, (Mesquite, Texas) All I nternational Rights Res erved.
LINEAGE POWER
20
Document No: DS05-012 ver. 1.04
PDF Name: austin_megalynx_sip.pdf