Data Sheet
June 3, 2009
Austin MegaLynx
TM
SMT: Non-Isolated DC-DC Power Modules:
4.5Vdc – 5.5Vdc input; 0.8 to 3.63Vdc; 30A Output Current
6.0Vdc – 14Vdc input; 0.8 to 3.63Vdc Output; 20/30A Output Current
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Delivers up to 30A of output current
High efficiency: 92% @ 3.3V full load (12Vin)
Available in two input voltage ranges
ATH: 4.5 to 5.5Vdc
ATS: 6 to 14Vdc
•
Output voltage programmable from
ATH: 0.8 to 3.63Vdc
ATS030: 0.8 to 2.75Vdc
ATS020: 0.8 to 3.63Vdc
Small size and low profile:
33.0 mm x 9.1 mm x 13.5 mm
(1.30 in. x 0.36 in. x 0.53 in.)
Monotonic start-up into pre-biased output
Output voltage sequencing (EZ-SEQUENCE )
Remote On/Off
Remote Sense
Over current and Over temperature protection
-P option: Paralleling with active current share
-H option: Additional GND pins for improved
thermal derating
Wide operating temperature range (-40°C to 85°C)
UL*
60950 Recognized,
CSA
C22.2 No.
60950-00 Certified, and
VDE
‡
0805 (EN60950-1
3
rd
edition) Licensed
ISO** 9001 and ISO 14001 certified
manufacturing facilities
†
TM
RoHS Compliant
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Description
The Austin MegaLynx series SMT 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 2.5Vdc output voltage (V
IN
=
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 3.63Vdc. 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: DS06-109 ver. 1.09
PDF Name: austin_megalynx_smt.pdf
Data Sheet
June 3, 2009
Austin MegaLynx
TM
SMT: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
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
Input Voltage
Continuous
ATH
ATS
Sequencing pin voltage
ATH
ATS
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
All
V
IN
V
IN
Vs
EQ
Vs
EQ
T
A
-0.3
-0.3
-0.3
-0.3
-40
6
15
6
15
85
Vdc
Vdc
Vdc
Vdc
°C
Device
Symbol
Min
Max
Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Device
ATH
ATS
Maximum Input Current
(V
IN
= V
IN,min
, V
O
= V
O,set,
I
O
=I
O, max
)
ATH
ATS020
ATS030
Inrush Transient
Input Reflected Ripple Current, peak-to-
peak
(5Hz to 20MHz, 1μH source impedance;
V
IN
=6.0V to 14.0V, I
O
= I
Omax
; See Figure 1)
Input Ripple Rejection (120Hz)
All
All
All
Symbol
V
IN
V
IN
I
IN,max
I
IN,max
I
IN,max
I t
100
50
2
Min
4.5
6.0
Typ
5.0
12
Max
5.5
14
27
13.3
15.8
1
Unit
Vdc
Vdc
Adc
Adc
Adc
A s
mAp-p
dB
2
LINEAGE
POWER
2
Data Sheet
June 3, 2009
Austin MegaLynx
TM
SMT: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN,nom
, I
O
=I
O, nom
, T
ref
=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
ATS030
ATS020
ATH030*
* V
O
≥
3.3V only possible for V
IN
≥
4.75V
Output Regulation
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
C
OUT
= 0.1μF // 10
μF
ceramic capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
ESR
≥
1 mΩ
ESR
≥
10 mΩ
Output Current
(V
IN
= 4.5 to 5.5Vdc)
(V
IN
= 6 to 14Vdc)
(V
IN
= 6 to 14Vdc)
Output Current Limit Inception (Hiccup Mode)
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
ATH Series: V
IN
=5Vdc, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
O,set
= 0.8dc
V
O,set
= 1.2Vdc
V
O,set
= 1.5Vdc
V
O,set
= 1.8Vdc
V
O,set
= 2.5Vdc
V
O,set
= 3.3Vdc
ATS Series: V
IN
=12Vdc, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
O,set
= 0.8dc
V
O,set
= 1.2Vdc
V
O,set
= 1.8Vdc
V
O,set
= 2.5Vdc
V
O,set
= 3.3Vdc
Switching Frequency, Fixed
All
η
η
η
η
η
η
η
η
η
η
η
f
sw
⎯
82.2
85.8
89.5
89.2
92.0
92.2
77.5
83.5
86.5
91.3
92.1
300
⎯
%
%
%
%
%
%
%
%
%
%
%
kHz
ATH Series
ATS030 Series
ATS020 Series
All
All
I
o
I
o
I
o
I
O, lim
I
O, s/c
0
0
0
105
⎯
140
3.5
30
30
20
160
⎯
Adc
Adc
Adc
% I
omax
Adc
All
All
C
O, max
C
O, max
0
0
⎯
⎯
2,000
10,000
μF
μF
V
o
≤
2.5V
2.5V < V
o
≤
3.63V
V
o
> 3.63V
⎯
⎯
⎯
50
75
100
mV
pk-pk
mV
pk-pk
mV
pk-pk
All
All
All
⎯
⎯
⎯
⎯
⎯
0.5
20
40
1
mV
mV
% V
O, set
0.8
0.8
0.8
2.75
3.63
3.63
Vdc
Vdc
Vdc
All
V
O, set
–5.0
⎯
+3.0
% V
O, set
Device
All
Symbol
V
O, set
Min
-1.5
Typ
⎯
Max
+1.5
Unit
% V
O, set
LINEAGE
POWER
3
Data Sheet
June 3, 2009
Austin MegaLynx
TM
SMT: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Electrical Specifications
(continued)
Parameter
Dynamic Load Response
(dI
O
/dt=5A/μs; V
IN
=12V, V
o
=3.3V ; T
A
=25°C)
Load Change from Io= 50% to 100% of I
O
,max;
No external output capacitors
Peak Deviation
Settling Time (V
O
<10% peak deviation)
(dI
O
/dt=5A/μs; V
IN
=V
IN
,
nom
; T
A
=25°C)
Load Change from I
O
= 100% to 50%of I
O
,
max
:
No external output capacitors
Peak Deviation
Settling Time (V
O
<10% peak deviation)
(dI
O
/dt=5A/μs; V
IN
=V
IN
,
nom
; T
A
=25°C)
Load Change from Io= 50% to 100% of Io,max;
2x150
μF
polymer capacitor
Peak Deviation
Settling Time (V
O
<10% peak deviation)
(dI
O
/dt=5A/μs; V
IN
=V
IN
,
nom
; T
A
=25°C)
Load Change from Io= 100% to 50%of I
O,max
:
2x150
μF
polymer capacitor
Peak Deviation
Settling Time (V
O
<10% peak deviation)
Device
Symbol
Min
Typ
Max
Unit
All
All
V
pk
t
s
⎯
⎯
350
25
⎯
mV
μs
All
All
V
pk
t
s
⎯
⎯
350
25
⎯
mV
μs
All
All
V
pk
t
s
⎯
⎯
250
40
⎯
⎯
mV
μs
All
All
V
pk
t
s
⎯
⎯
250
40
⎯
⎯
mV
μs
General Specifications
Parameter
Min
Typ
3,016,040
Max
Unit
Calculated MTBF (V
IN
=12V, V
O
=3.3Vdc, I
O
= 0.8I
O, max
,
T
A
=40°C) Per Telecordia Method
Weight
⎯
Hours
⎯
g (oz.)
6.2 (0.22)
LINEAGE
POWER
4
Data Sheet
June 3, 2009
Austin MegaLynx
TM
SMT: Non-Isolated DC-DC Power Modules:
4.5 – 5.5Vdc input; 0.8 to 3.63Vdc Output; 30A output current
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 20/30A output
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to GND)
Logic High (Module OFF)
Input High Current
Input High Voltage
Logic Low (Module ON)
Input Low Current
Input Low Voltage
Turn-On Delay and Rise Times
(V
IN
=V
IN, nom
, I
O
=I
O, max ,
V
O
to within ±1% of steady state)
Case 1: On/Off input is enabled and then
input power is applied (delay from instant at
which V
IN
= V
IN, min
until V
o
= 10% of V
o, 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 V
o
= 10% of V
o, set
)
Output voltage Rise time (time for V
o
to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot
I
O
= I
O, max
; V
IN, min
– V
IN, max
, T
A
= 25 C
Remote Sense Range
Over temperature Protection
(See Thermal Consideration section)
Sequencing Slew rate capability
(V
IN, min
to V
IN, max
; I
O, min
to I
O, max
V
SEQ
< V
o
)
Sequencing Delay time (Delay from V
IN, min
to application of voltage on SEQ pin)
Tracking Accuracy
Power-up (2V/ms)
Power-down (1V/ms)
(V
IN, min
to V
IN, max
; I
O, min
- I
O, max
V
SEQ
< V
o
)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Turn-on Threshold
Turn-off Threshold
Forced Load Share Accuracy
Number of units in Parallel
ATH
ATH
ATS
ATS
-P
-P
⎯
4.3
3.9
5.5
5.0
10
5
Vdc
Vdc
Vdc
Vdc
% Io
All
All
Ts
EQ-delay
V
SEQ
–V
o
V
SEQ
–V
o
10
100
200
200
400
msec
mV
mV
All
dV
SEQ
/dt
—
2
V/msec
All
All
T
ref
⎯
⎯
⎯
125
0.5
⎯
V
°C
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
IH
V
IH
I
IL
V
IL
0.5
3.0
⎯
-0.3
⎯
⎯
⎯
⎯
3.3
V
IN, max
200
1.2
mA
V
µA
V
All
Tdelay
―
2.5
5
msec
All
Tdelay
―
2.5
5
msec
All
Trise
2
10
3.0
msec
% V
O, set
LINEAGE
POWER
5
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