LINEAGEPOWER AXB050X43-SRZ

Data Sheet
June 16, 2009
Austin LynxTM 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
ƒ
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
ƒ
Compliant to ROHS EU Directive 20002/95/EC with
lead solder exemption (non-Z versions)
ƒ
Wide input voltage range
ƒ
ƒ
Applications
AXB030:
18 to 30Vdc
AXB050:
20 to 30Vdc
Output voltage programmable via external resistor
AXB030:
3Vdc to 6Vdc
AXB050:
5Vdc to 15Vdc
High efficiency modules (VIN = 24Vdc)
AXB030:
91% at 3.3V full load
AXB050:
94% at 12Vdc full load
ƒ
Distributed power architectures
ƒ
ƒ
Intermediate bus voltage applications
ƒ
Monotonic start-up into pre-bias output
ƒ
Telecommunications equipment
ƒ
Remote On/Off (Positive logic)
ƒ
Wireless Base stations
ƒ
Remote Sense
ƒ
Industrial equipment
ƒ
Small size and low profile:
ƒ
LANs/WANs
33.0 mm x 13.5 mm x 8.28 mm
ƒ
Enterprise Networks
(1.30 in x 0.53 in x 0.326 in)
ƒ
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
Low output ripple and noise
ƒ
Constant switching frequency
ƒ
Wide operating temperature range (-40°C to 85°C)
ƒ
Over current and Over temperature protection (nonlatching)
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
The Austin LynxTM 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 (VIN =
24Vdc). These modules operate over a wide input voltage range (VIN = 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 LynxTM 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
Device
Symbol
Min
Max
Unit
All
VIN
-0.3
36
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
Typ
Max
Unit
Operating Input Voltage
AXB030
VIN
18.0
24.0
30.0
Vdc
AXB050
VIN
20.0
24.0
30.0
Vdc
All
IIN,max
3.5
Adc
Vo = 3.3Vdc
IIN,No Load
60
mAdc
Vo = 12Vdc
IIN,No Load
110
mAdc
Vo = 3.3Vdc
IIN,stand-by
3
mA
Vo = 12Vdc
IIN,stand-by
3
mA
Inrush Transient
All
I t
2
1
A s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN=20V
to 30V, IO= IOmax ; See Figure 25)
All
Input Ripple Rejection (120Hz)
All
Maximum Input Current
(VIN= 20V, VO= 12V, IO=IO, max)
Input No Load Current
(VIN = 24Vdc, Io = 0, module enabled)
Input Stand-by Current
(VIN = 24Vdc, module disabled)
50
50
2
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 LynxTM 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
Device
Symbol
Min
Typ
Max
Unit
All
VO, set
-2.0
VO, set
+2.0
% VO, set
All
VO, set
-3%
⎯
+3%
% VO, set
AXB030
VO
3.0
6.0
Vdc
AXB050
VO
5.0
15.0
Vdc
(VIN=VN, 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
⎯
⎯
0.4
% VO, set
Load (IO=IO, min to IO, max)
All
⎯
⎯
0.4
% VO, set
Temperature (Tref=TA, min to TA, max)
All
⎯
0.5
1
% VO, set
Peak-to-Peak (5Hz to 20MHz bandwidth)
AXB030
⎯
50
75
mVpk-pk
Peak-to-Peak (5Hz to 20MHz bandwidth)
AXB050
⎯
100
200
mVpk-pk
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
Cout =0.01μF ceramic//10μFtantalum capacitors)
External Capacitance
ESR ≥ 1 mΩ
AXB030
CO, max
0
⎯
1,000
μF
ESR ≥ 10 mΩ
AXB030
CO, max
0
⎯
3,000
μF
ESR ≥ 1 mΩ
AXB050
CO, max
0
⎯
1,000
μF
ESR ≥ 10 mΩ
AXB050
CO, max
0
⎯
2,000
μF
Vo = 3.3Vdc
AXB030
Io
0
10
Adc
Vo = 5.0Vdc
AXB050
Io
0
8.0
Adc
AXB030
Po
33
W
AXB050
Po
50
W
AXB030
IO, s/c
⎯
15
⎯
Adc
AXB050
IO, s/c
⎯
20
⎯
Adc
VO,set = 3.3Vdc
η
90
%
VO,set = 5.0Vdc
η
93
%
%
Output Current (VIN = VIN, nom)
Output Power (VIN = VIN, nom)
Vo =Vo,,min to Vo,,max
Output Short-Circuit Current
(VO≤250mV) ( Hiccup Mode )
Efficiency
VIN= VIN, nom, TA=25°C
IO=IO, max , VO= VO,set
Switching Frequency (Fixed)
LINEAGE POWER
VO,set = 12.0Vdc
η
95
VO,set = 15.0Vdc
η
96
All
fsw
⎯
300
%
⎯
kHz
3
Data Sheet
June 16, 2009
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Peak Deviation (Vo = 3.3Vdc)
AXB030
Vpk
300
mV
Peak Deviation (Vo = 12Vdc)
AXB050
Vpk
220
mV
All
ts
50
μs
Load Change from IO= 100% to 50%of IO, max: No
external output capacitors
Peak Deviation (Vo = 3.3Vdc)
AXB030
Vpk
320
mV
Peak Deviation (Vo = 12Vdc)
AXB050
Vpk
220
mV
All
ts
50
μs
Peak Deviation (Vo = 3.3Vdc)
AXB030
Vpk
⎯
120
mV
Peak Deviation (Vo = 12Vdc)
AXB050
Vpk
⎯
130
mV
All
ts
⎯
50
μs
⎯
130
mV
130
mV
Dynamic Load Response
(dIO/dt=5A/μs; VIN=VIN, nom TA=25°C)
Load Change from Io= 50% to 100% of IO,max; No
external output capacitors
Settling Time (VO<10% peak deviation)
(dIO/dt=5A/μs; VIN=VIN, nom; TA=25°C)
Settling Time (VO<10% peak deviation)
(dIO/dt=5A/μs; VIN=VIN, nom; TA=25°C)
Load Change from Io= 50% to 100% of Io,max;
2x150 μF polymer capacitor
Settling Time (VO<10% peak deviation)
(dIO/dt=5A/μs; VIN=VIN, nom; TA=25°C)
Load Change from Io= 100% to 50%of IO,max:
2x150 μF polymer capacitor
Peak Deviation (Vo = 3.3Vdc)
AXB030
Vpk
Peak Deviation (Vo = 12Vdc)
AXB050
Vpk
All
ts
Settling Time (VO<10% peak deviation)
⎯
⎯
50
μs
General Specifications
Parameter
Device
Calculated MTBF (VIN= VIN, nom, IO= 0.8IO, max,
TA=40°C) Telecordia SR 332 Issue 1: Method 1,
case 3
AXB050
Weight
LINEAGE POWER
Min
Typ
Max
8,035,510
⎯
5.70 (0.20)
Unit
Hours
⎯
g (oz.)
4
Data Sheet
June 16, 2009
Austin LynxTM 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
Device
Symbol
Input High Current
All
IIH
Input High Voltage
All
VIH
Input Low Current
All
Input Low Voltage
Min
Typ
Max
Unit
⎯
10
µA
VIN−2.5V
⎯
30
V
IIL
⎯
⎯
1
mA
All
VIL
-0.3
⎯
1.2
V
All
Tdelay
2
4
8
msec
All
Tdelay
2
4
8
msec
All
Trise
2
5
9
msec
3.0
% VO, set
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)
Logic Low (Module OFF)
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
o
IO = IO, max; VIN, min – VIN, max, TA = 25 C
Remote Sense Range
Over temperature Protection
―
―
0.5
V
⎯
125
135
°C
AXB030
17
Vdc
AXB050
19
Vdc
All
Tref
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
LINEAGE POWER
AXB030
15
Vdc
AXB050
17
Vdc
5
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Characteristic Curves
o
The following figures provide typical characteristics for the AXB030X module at 3.3V, 10A and 25 C.
95
12
2m/s (400LFM)
10
85
OUTPUT CURRENT, Io (A)
EFFICIENCY, (η)
90
Vin=20V
Vin=24V
80
Vin=30V
75
70
0
2
4
6
8
10
LINEAGE POWER
2
0
0
20
40
60
80
100
VO (V) (1V/div)
VOn/off (V) (20V/div)
On/Off VOLTAGE
OUTPUT VOLTAGE
Figure 4. Derating Output Current versus Local
Ambient Temperature and Airflow.
TIME, t (1ms/div)
VO (V) (1V/div)
Figure 5. Typical Start-up Using Remote On/Off (VIN =
20V, Io = Io,max).
OUTPUT VOLTAGE
TIME, t (5μs /div)
Figure 3. Transient Response to Dynamic Load
Change from 50% to 100% of full load with di/dt of
5A/μs.
1m/s (200LFM)
4
AMBIENT TEMPERATURE, TA C
INPUT VOLTAGE
OUTPUT CURRENT,
(A) (5A/div)
OUTPUT VOLTAGEIO
VO (V) (200mV/div)
Figure 2. Typical output ripple and noise (VIN = VIN,NOM,
Io = Io,max).
0.5m/s (100LFM)
VIN (V) (20V/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
TIME, t (1μs/div))
NC
6
O
OUTPUT CURRENT, IO (A)
Figure 1. Converter Efficiency versus Output Current.
8
TIME, t (1ms/div)
Figure 6. Typical Start-up Using Input Voltage (VIN =
20V, Io = Io,max).
6
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Characteristic Curves (continued)
The following figures provide typical characteristics for the AXB050X module at 5V, 8A and 25oC.
9
100
8
OUTPUT CURRENT, Io (A)
95
EFFICIENCY, (η)
90
85
Vin=24V
80
Vin=20V
Vin=30V
75
70
0
2
4
6
8
Figure 9. Transient Response to Dynamic Load
change from 50% to 100% of full load with di/dt of
5A/μs.
LINEAGE POWER
5
200 lfm
(1.0m/s)
4
3
2
1
0
30
40
50
60
70
80
90
100
O
OUTPUT VOLTAGE
VO (V) (2V/div)
On/Off VOLTAGE
VIN (V) (10V/div)
Figure 10. Derating Output Current versus Local
Ambient Temperature and Airflow (VIN = VIN,NOM).
TIME, t (2.5ms/div)
OUTPUT VOLTAGE
VO (V) (2V/div)
Figure 11. Typical Start-up Using Remote On/Off
(VIN = 24V, Io = Io,max).
VIN (V) (10V/div)
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (5A/div)
VO (V) (200mV/div)
TIME, t (5μs/div)
100 lfm
(0.5m/s)
AMBIENT TEMPERATURE, TA C
INPUT VOLTAGE
VO (V) (50mV/div)
OUTPUT VOLTAGE
TIME, t (1μs/div)
Figure 8. Typical output ripple and noise (VIN = VIN,NOM,
Io = Io,max).
NC
6
20
OUTPUT CURRENT, IO (A)
Figure 7. Converter Efficiency versus Output Current.
7
TIME, t (2.5ms/div)
Figure 12. Typical Start-up Using Input Voltage (VIN
= 20V, Io = Io,max).
7
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Characteristic Curves (continued)
5
95
4
OUTPUT CURRENT, Io (A)
100
90
Vin=20V
Vin=24V
80
Vin=30V
75
70
0
1
2
OUTPUT CURRENT, IO (A)
3
VO (V) (10mV/div)
OUTPUT VOLTAGE
Figure 13. Converter Efficiency versus Output
Current.
TIME, t (1μs/div)
TIME, t (10μs /div)
Figure 15. Transient Response to Dynamic Load
change from 50% to 100% of full load with di/dt of
5A/μs.
LINEAGE POWER
100 lfm
(0.5m/s)
2
1
0
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
100
Figure 16. Derating Output Current versus Local
Ambient Temperature and Airflow.
TIME, t (2ms/div)
Figure 17. Typical Start-up Using Remote On/Off (VIN
= VIN,NOM, Io = Io,max).
OUTPUTVOLTAGE
VO (V) (5V/div)
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (2A/div)
VO (V) (100mV/div)
Figure 14. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
NC
3
20
4
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (10V/div) VO (V) (5V/div)
85
INPUT VOLTAGE
VIN (V) (20V/div)
EFFICIENCY, η (%)
The following figures provide typical characteristics for the AXB050X module at 12V, 4A and 25oC.
TIME, t (2ms/div)
Figure 18. Typical Start-up Using Input Voltage (VIN
= 20V, Io = Io,max).
8
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Characteristic Curves (continued)
The following figures provide typical characteristics for the AXB050X module at 15V, 3A and 25oC.
4
100
90
Vin=20V
Vin=24V
85
80
Vin=30V
75
70
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT, Io (A)
EFFICIENCY, η (%)
95
1
0
20
30
40
50
60
70
80
90
100
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (10V/div) VO (V) (5V/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
TIME, t (2ms/div)
OUTPUT VOLTAGE
VO (V) (5V/div)
Figure 23. Typical Start-up Using Remote On/Off
(VIN = VIN,NOM, Io = Io,max).
TIME, t (10μs /div)
Figure 21. Transient Response to Dynamic Load
change from 50% to 100% of full load with di/dt of
5A/μs.
INPUT VOLTAGE
VIN (V) (20V/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (1A/div)
VO (V) (50mV/div)
2
AMBIENT TEMPERATURE, TA C
TIME, t (1μs/div)
Figure 20. Typical output ripple and noise (VIN =
VIN,NOM, Io = Io,max).
LINEAGE POWER
NC
O
OUTPUT CURRENT, IO (A)
Figure 19. Converter Efficiency versus Output Current.
3
TIME, t (2.5ms/div)
Figure 24. Typical Start-up Using Input Voltage (VIN
= 20V, Io = Io,max).
9
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Test Configurations
Design Considerations
Input Filtering
CURRENT PROBE
TO OSCILLOSCOPE
LTEST
VIN(+)
BATTERY
1μH
CS
CIN
220μF
Min
150μF
E.S.R.<0.1Ω
@ 20°C 100kHz
Output Filtering
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 25. Input Reflected Ripple Current Test
Setup.
COPPER STRIP
VO (+)
RESISTIVE
LOAD
1uF
.
10uF
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.
Figure 26. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact
Rcontact
VIN(+)
Rdistribution
RLOAD
VO
Rcontact
Rcontact
COM
Rdistribution
VO
VIN
TM
The Austin Lynx 24V SMT 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.
Rdistribution
The Austin LynxTM 24V SMT 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.
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.
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 27. Output Voltage and Efficiency Test Setup.
VO. IO
Efficiency
η =
LINEAGE POWER
VIN. IIN
x
100 %
10
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Feature Description
R distrib u tio n
Remote On/Off
R c o nta c t
R c o n ta c t
V IN (+ )
TM
The Austin Lynx 24V SMT power modules feature an
On/Off pin for remote On/Off operation. Positive Logic
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.
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 logic-high
(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 = VIN,max is 10µA. Applying a
logic-low when the transistor Q1 is turned-On, the
power module is OFF. During this state VOn/Off must
be less than 1.2V. When not using positive logic On/off
pin, leave the pin unconnected or tie to VIN.
VIN+
MODULE
R2
ON/OFF
+
I ON/OFF
VON/OFF
PWM Enable
R3
Q1
R LO AD
R distrib u tio n
R c o nta c t
R c o n ta c t
COM
R d istribu tio n
CO M
Figure 29. Effective Circuit Configuration for
Remote Sense operation.
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 average output current during hiccup is 20%
IO, max.
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.
Overtemperature Protection
Q3
CSS
R4
GND
S e n se
Input Undervoltage Lockout
Q2
R1
R d istribu tio n
VO
_
Figure 28. Remote On/Off Implementation circuit.
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.
Remote Sense
Output Voltage Programming
The Austin Lynx 24V 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 29). The voltage between the Sense
pin and Vo pin must not exceed 0.5V.
The output voltage of the Austin Lynx 24V can be
programmed to any voltage in the specified ranges by
connecting a resistor (shown as Rtrim in Figure 30)
between the Trim and GND pins of the module. Without
an external resistor between the Trim and GND pins,
the output of the module will be at the low-end of the
specified range. To calculate the value of the trim
resistor, Rtrim for a desired output voltage, use the
following equations:
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 increases the
power output of 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 the output of the module.
LINEAGE POWER
For the AX030A0X modules,
⎡ 10500
⎤
Rtrim = ⎢
− 3480⎥ Ω
⎣Vo − 3.018
⎦
11
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Feature Descriptions (continued)
Vo
Rmargin-down
Output Voltage Programming (continued)
For the AX050A0X modules,
Austin Lynx or
Lynx II Series
⎡ 10500
⎤
Rtrim = ⎢
− 1000⎥ Ω
⎣Vo − 5.021
⎦
Q2
Trim
where, Rtrim is the external resistor in Ω and
Vo is the desired output voltage
Rmargin-up
Rtrim
V IN(+)
V O(+)
Q1
GND
ON/OFF
LOAD
TRIM
Rtrim
Figure 31. Circuit Configuration for margining the
output voltage.
GND
Figure 30. Circuit configuration to program output
voltage using an external resistor.
By using a ±0.5% tolerance trim resistor with a TC of
±100ppm, a set point tolerance of ±2% can be 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.
Voltage Margining
Output voltage margining can be implemented in the
Austin Lynx 24V 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 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 Rmargin-up and Rmargin-down for a specific output
voltage and % margin. Please consult your local
Lineage Power technical representative for additional
details.
LINEAGE POWER
12
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 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 32. Note that the airflow is parallel to
the long axis of the module as shown in figure 32. The
derating data applies to airflow in either direction of the
module’s long axis.
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
76.2_
(3.0)
Figure 33. Tref Temperature measurement location.
The thermal reference point, Tref used in the
specifications is shown in Figure 33. 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.
x
12.7_
(0.50)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Figure 32. Thermal Test Set-up.
LINEAGE POWER
13
Data Sheet
June 16, 2009
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
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.)
Non Co-planarity (max): 0.15 (0.006)
LINEAGE POWER
14
Data Sheet
June 16, 2009
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
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
15
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Packaging Details
The Austin LynxTM 24V SMT versions are supplied in tape & reel as standard. Modules are shipped in quantities of
250 modules per reel.
Tape Dimensions
Reel Dimensions
Outside diameter:
Inside diameter:
Tape Width:
LINEAGE POWER
330.2 mm (13.00)
177.8 mm (7.00”)
44.0 mm (1.73”)
16
Data Sheet
June 16, 2009
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Surface Mount Information
Pick and Place
TM
The Austin Lynx 24V SMT modules use open frame
construction and are designed for fully automated
assembly process. The modules are fitted with a
label designed to provide a large surface area for pick
and place operation. The label meets all the
requirements for surface mount processing, as well as
safety standards, and is able to withstand reflow
temperatures of up to 300oC. The label also carries
product information such as product code, serial
number and location of manufacture.
following instructions must be observed when
soldering these units. Failure to observe these
instructions may result in the failure of or cause
damage to the modules, and can adversely affect
long-term reliability.
In a conventional Tin/Lead (Sn/Pb) solder process
peak reflow temperatures are limited to less than
o
o
235 C. Typically, the eutectic solder melts at 183 C,
wets the land, and subsequently wicks the device
connection. Sufficient time must be allowed to fuse
the plating on the connection to ensure a reliable
solder joint. There are several types of SMT reflow
technologies currently used in the industry. These
surface mount power modules can be reliably
soldered using natural forced convection, IR (radiant
infrared), or a combination of convection/IR. For
reliable soldering the solder reflow profile should be
established by accurately measuring the modules CP
connector temperatures.
300
P eak Temp 235oC
Figure 34. Pick and place Location.
REFLOW TEMP (°C)
250
Nozzle Recommendations
For further information please contact your local
Lineage Power technical representative.
Tin Lead Soldering
TM
The Austin Lynx 24V SMT power modules are lead
free modules and can be soldered either in a lead-free
solder process or in a conventional Tin/Lead (Sn/Pb)
process. It is recommended that the customer review
data sheets in order to customize the solder reflow
profile for each application board assembly. The
LINEAGE POWER
150
So ak zo ne
30-240s
100
Tlim above
205oC
P reheat zo ne
max 4oCs -1
50
0
REFLOW TIME (S)
Figure 35. Reflow Profile for Tin/Lead (Sn/Pb)
process.
240
235
MAX TEMP SOLDER (°C)
The module weight has been kept to a minimum by
using open frame construction. Even so, these
modules have a relatively large mass when compared
to conventional SMT components. Variables such as
nozzle size, tip style, vacuum pressure and placement
speed should be considered to optimize this process.
The minimum recommended nozzle diameter for
reliable operation is 6mm. The maximum nozzle outer
diameter, which will safely fit within the allowable
component spacing, is 9 mm.
Oblong or oval nozzles up to 11 x 9 mm may also be
used within the space available.
Co o ling
zo ne
1-4oCs -1
Heat zo ne
max 4oCs -1
200
230
225
220
215
210
205
200
0
10
20
30
40
50
60
Figure 36. Time Limit Curve Above 205oC for
Tin/Lead (Sn/Pb) process.
17
Data Sheet
June 16, 2009
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Surface Mount Information (continued)
Lead Free Soldering
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for
Nonhermetic Solid State Surface Mount Devices) for
both Pb-free solder profiles and MSL classification
procedures. This standard provides a recommended
forced-air-convection reflow profile based on the
volume and thickness of the package (table 4-2). The
suggested Pb-free solder paste is Sn/Ag/Cu (SAC).
The recommended linear reflow profile using
Sn/Ag/Cu solder is shown in Figure. 37.
300
Per J-STD-020 Rev. C
Peak Temp 260°C
250
Reflow Temp (°C)
The –Z version Austin Lynx 24V SMT modules are
lead-free (Pb-free) and RoHS compliant and are both
forward and backward compatible in a Pb-free and a
SnPb soldering process. Failure to observe the
instructions below may result in the failure of or cause
damage to the modules and can adversely affect
long-term reliability.
200
150
* Min. Time Above 235°C
15 Seconds
Heating Zone
1°C/Second
Cooling
Zone
*Time Above 217°C
60 Seconds
100
50
0
Reflow Time (Seconds)
Figure 37. Recommended linear reflow profile
using Sn/Ag/Cu solder.
MSL Rating
The Austin Lynx 24V SMT modules have an MSL
rating of 2.
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount
packages is detailed in J-STD-033 Rev. A (Handling,
Packing, Shipping and Use of Moisture/Reflow
Sensitive Surface Mount Devices). Moisture barrier
bags (MBB) with desiccant are required for MSL
ratings of 2 or greater. These sealed packages
should not be broken until time of use. Once the
original package is broken, the floor life of the product
at conditions of ≤ 30°C and 60% relative humidity
varies according to the MSL rating (see J-STD-033A).
The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when
stored at the following conditions: < 40° C, < 90%
relative humidity.
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
(AN04-001).
LINEAGE POWER
18
Austin LynxTM 24V: Non-isolated Power Modules:
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Data Sheet
June 16, 2009
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 1. Device Codes
Device Code
Input
Voltage Range
Output
Voltage
Output
Power
On/Off
Logic
Connector
Type
Comcodes
AXB030X43-SR
18 – 30Vdc
3.0 – 6.0Vdc
30W
Positive
SMT
108992673
AXB030X43-SRZ
18 – 30Vdc
3.0 – 6.0Vdc
30W
Positive
SMT
CC109106738
AXB050X43-SR
20 – 30Vdc
5.0 – 15.0Vdc
50W
Positive
SMT
108992681
AXB050X43-SRZ
20 – 30Vdc
5.0 – 15.0Vdc
50W
Positive
SMT
CC109104857
-Z refers to RoHS-compliant codes
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
19
Document No: DS05-032 ver.1.22
PDF name: lynx_24v_ds.pdf