Data Sheet
June 16, 2009
Austin Lynx
TM
24V:Non-isolated Power Modules:
18/20-30Vdc input; 3.0 to 6.0Vdc & 5.0 to 15.0Vdc Output; 30 & 50W
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 20002/95/EC with
lead solder exemption (non-Z versions)
Wide input voltage range
AXB030:
AXB050:
AXB030:
AXB050:
AXB030:
AXB050:
18 to 30Vdc
20 to 30Vdc
3Vdc to 6Vdc
5Vdc to 15Vdc
91% at 3.3V full load
94% at 12Vdc full load
Output voltage programmable via external resistor
High efficiency modules (V
IN
= 24Vdc)
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Wireless Base stations
Industrial equipment
LANs/WANs
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
Low output ripple and noise
Monotonic start-up into pre-bias output
Remote On/Off (Positive logic)
Remote Sense
Small size and low profile:
33.0 mm x 13.5 mm x 8.28 mm
(1.30 in x 0.53 in x 0.326 in)
Constant switching frequency
Wide operating temperature range (-40°C to 85°C)
Over current and Over temperature protection (non-
latching)
UL*
60950-1Recognized,
CSA
†
C22.2 No. 60950-1-
03 Certified, and
VDE
‡
0805:2001-12 (EN60950-1)
Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Description
The Austin Lynx
TM
24V series SMT power modules are non-isolated DC-DC converters in an industry standard
package that can deliver up to 48W of output power with a full load efficiency of 94% at 12Vdc output voltage (V
IN
=
24Vdc). These modules operate over a wide input voltage range (V
IN
= 18/20 – 30Vdc) and provide a precisely
regulated output voltage from 3 to 6Vdc (AXB030) and 5 to 15Vdc (AXB050), programmable via an external resistor.
Standard features include remote On/Off, adjustable output voltage, remote sense, over current and over
temperature protection.
*
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: DS05-032 ver.1.22
PDF name: lynx_24v_ds.pdf
Data Sheet
June 16, 2009
Austin Lynx
TM
24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
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
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
All
T
A
-40
85
°C
Device
All
Symbol
V
IN
Min
-0.3
Max
36
Unit
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
= 20V, V
O
= 12V, I
O
=I
O, max
)
Input No Load Current
(V
IN
= 24Vdc, Io = 0, module enabled)
Input Stand-by Current
(V
IN
= 24Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN
=20V
to 30V, I
O
= I
Omax
; See Figure 25)
Input Ripple Rejection (120Hz)
V
o
= 3.3
Vdc
V
o
= 12
Vdc
V
o
= 3.3
Vdc
V
o
= 12
Vdc
All
I
IN,No Load
I
IN,No Load
I
IN,stand-by
I
IN,stand-by
I t
2
Device
AXB030
AXB050
All
Symbol
V
IN
V
IN
I
IN,max
Min
18.0
20.0
Typ
24.0
24.0
Max
30.0
30.0
3.5
Unit
Vdc
Vdc
Adc
60
110
3
3
1
mAdc
mAdc
mA
mA
2
A s
All
All
50
50
mAp-p
dB
CAUTION:
These power modules can be used in a wide variety of applications ranging from simple standalone
operation to an integrated part of sophisticated power architectures. To preserve maximum flexibility, no internal fuse
has been provided. Also, extensive safety testing has shown that no external fuse is required to protect the unit.
However, it is still recommended that some type of current-limiting power source be used to protect the module and
evaluated in the end-use equipment.
LINEAGE
POWER
2
Data Sheet
June 16, 2009
Austin Lynx
TM
24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
N, min
, I
O
=I
O, max
, T
A
=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 (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
Cout =0.01μF ceramic//10μFtantalum capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
ESR
≥
1 mΩ
ESR
≥
10 mΩ
ESR
≥
1 mΩ
ESR
≥
10 mΩ
Output Current (V
IN
= V
IN, nom
)
V
o
= 3.3Vdc
V
o
= 5.0Vdc
Output Power (V
IN
= V
IN, nom
)
V
o
=V
o,,min
to V
o,,max
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= V
IN, nom
, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
Switching Frequency (Fixed)
AXB030
AXB050
AXB030
AXB050
AXB030
AXB050
V
O,set
= 3.3Vdc
V
O,set
= 5.0Vdc
V
O,set
= 12.0Vdc
V
O,set
= 15.0Vdc
All
I
o
I
o
P
o
P
o
I
O, s/c
I
O, s/c
η
η
η
η
f
sw
⎯
⎯
⎯
15
20
90
93
95
96
300
⎯
0
0
10
8.0
33
50
⎯
⎯
Adc
Adc
W
W
Adc
Adc
%
%
%
%
kHz
AXB030
AXB030
AXB050
AXB050
C
O, max
C
O, max
C
O, max
C
O, max
0
0
0
0
⎯
⎯
⎯
⎯
1,000
3,000
1,000
2,000
μF
μF
μF
μF
AXB030
AXB050
⎯
⎯
50
100
75
200
mV
pk-pk
mV
pk-pk
All
All
All
⎯
⎯
⎯
⎯
⎯
0.5
0.4
0.4
1
% V
O, set
% V
O, set
% V
O, set
AXB030
AXB050
V
O
V
O
3.0
5.0
6.0
15.0
Vdc
Vdc
All
V
O, set
-3%
⎯
+3%
% V
O, set
Device
All
Symbol
V
O, set
Min
-2.0
Typ
V
O, set
Max
+2.0
Unit
% V
O, set
LINEAGE
POWER
3
Data Sheet
June 16, 2009
Austin Lynx
TM
24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Electrical Specifications
(continued)
Parameter
Dynamic Load Response
(dI
O
/dt=5A/μs; V
IN
=V
IN
,
nom
T
A
=25°C)
Load Change from Io= 50% to 100% of I
O
,max; No
external output capacitors
Peak Deviation (Vo = 3.3Vdc)
Peak Deviation (Vo = 12Vdc)
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 (Vo = 3.3Vdc)
Peak Deviation (Vo = 12Vdc)
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 (Vo = 3.3Vdc)
Peak Deviation (Vo = 12Vdc)
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 (Vo = 3.3Vdc)
Peak Deviation (Vo = 12Vdc)
Settling Time (V
O
<10% peak deviation)
AXB030
AXB050
All
V
pk
V
pk
t
s
⎯
⎯
130
130
50
⎯
mV
mV
μs
AXB030
AXB050
All
V
pk
V
pk
t
s
⎯
⎯
⎯
120
130
50
mV
mV
μs
AXB030
AXB050
All
V
pk
V
pk
t
s
300
220
50
mV
mV
μs
Device
Symbol
Min
Typ
Max
Unit
AXB030
AXB050
All
V
pk
V
pk
t
s
320
220
50
mV
mV
μs
General Specifications
Parameter
Calculated MTBF (V
IN
= V
IN, nom
, I
O
= 0.8I
O, max
,
T
A
=40°C) Telecordia SR 332 Issue 1: Method 1,
case 3
Weight
Device
AXB050
⎯
Min
Typ
8,035,510
5.70 (0.20)
⎯
Max
Unit
Hours
g (oz.)
LINEAGE
POWER
4
Data Sheet
June 16, 2009
Austin Lynx
TM
24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
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
(On/Off is open collector/drain logic input;
Signal referenced to GND - See feature description
section)
Device is with suffix “4” – Positive Logic
Logic High (On/Off pin open – Module ON)
Input High Current
Input High Voltage
Logic Low (Module OFF)
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)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
AXB030
AXB050
AXB030
AXB050
15
17
17
19
Vdc
Vdc
Vdc
Vdc
―
All
T
ref
⎯
―
125
0.5
135
V
°C
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
IH
V
IH
I
IL
V
IL
V
IN
−2.5V
⎯
-0.3
⎯
⎯
⎯
⎯
10
30
1
1.2
µA
V
mA
V
All
Tdelay
2
4
8
msec
All
Tdelay
2
4
8
msec
All
Trise
2
5
9
3.0
msec
% V
O, set
LINEAGE
POWER
5
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