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PDF AXH005A0X Data sheet ( Hoja de datos )
| Número de pieza | AXH005A0X | |
| Descripción | Austin MicroLynx Non-Isolated SIP series | |
| Fabricantes | Tyco Electronics | |
| Logotipo |  |
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Advance Data Sheet
October 2002
Austin MicroLynxTM SMT Non-isolated Power Modules:
3.0 – 5.5 Vdc Input; 0.75Vdc to 3.63 Vdc Output; 5A Output Current
Applications
• Intermediate Bus architecture
• Workstations, Servers, Desktop computers
• Distributed power architecture
• Telecommunications equipment
• Latest generation Ics (DSP, FPGA, ASIC) and
microprocessor based applications
• LANs/WANs
• Data processing equipment
Features
• Delivers 5A output current
• High efficiency: 94.0% at 3.3V full load (Vin=5.0V)
• Small size and low profile:
20.3 mm x 11.4 mm x 5.97 mm
(0.80 in x 0.45 in x 0.235 in)
• Cost-efficient open frame design
• High reliability:
Calculated MTBF > TBD hours at 25oC
• Remote On/Off
• Programmable output voltage via external resistor
from 0.75Vdc to 3.63Vdc
• Tightly regulated output voltage, ±1% typical
• Load Regulation ± 0.2%
• Line Regulation ± 0.1%
• Constant switching frequency
• Auto-reset overcurrent protection (non-latching)
• Surface mount package
• UL* 60950 Recognized, CSA† C22.2 No. 60950-00
Certified, and VDE‡ 0805 (IEC60950, 3rd edition)
Licensed
* 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.
should be followed. (The CE mark is placed on selected products.)
Description
Austin MicroLynxTM SMT (surface mount technology) power modules are non-isolated dc-dc converters that
can deliver 5A of output current with full load efficiency of 94.0% at 3.3V output. These modules provide
precisely regulated output voltage programmable via external resistor from 0.75Vdc to 3.63Vdc. The open
frame construction and small footprint enable designers to develop cost- and space-efficient solutions.
Features include remote On/Off and overcurrent protection.
1 page  
Advance Data Sheet
October 2002
Austin MicroLynxTM SMT Non-isolated dc-dc Power Modules
3.0 – 5.5 Vdc Input; 0.75Vdc to 3.63 Vdc Output; 5A Output Current
Characteristic Curves
The following figures provide typical characteristics curves for Austin MicroLynx at room temperature (TA =
25oC)
6
4.5
Io = 5A
3
Io = 2.5A
1.5
Io = 0A
0
1 23 45
Input V o ltage (V )
Figure 1. Typical input voltage and current characteristics
AXH005A0X-SR (Vo = 1.8 V)
TBD
92% Vin = 3.0V
Vin = 3.3V
Vin = 5.0V
88% Vin = 5.5V
84%
80%
76%
1
23
Output C urrent (A )
4
Figure 4. Converter efficiency vs. output current
AXH005A0X-SR (Vo = 1.0V)
5
92% Vin = 3.0V
Vin = 3.3V
Vin = 5.0V
89% Vin = 5.5V
86%
83%
Figure 2. Typical Output voltage and Output current
characteristics
90% Vin = 3.0V
Vin = 3.3V
Vin = 5.0V
85% Vin = 5.5V
80%
75%
70%
1
23
Output C urrent (A )
4
Figure 3. Converter efficiency vs. output current
AXH005A0X-SR (Vo = 0.75V)
5
80%
1
23
Output C urrent (A )
4
5
Figure 5. Converter efficiency vs. output current
AXH005A0X-SR (Vo = 1.2V)
94% Vin = 3.0V
Vin = 3.3V
Vin = 5.0V
91% Vin = 5.5V
88%
85%
82%
1
23
Output C urrent (A )
4
Figure 6. Converter efficiency vs. output current
AXH005A0X-SR (Vo = 1.5V)
5
Tyco Electronics Corp.
5
5 Page 
Advance Data Sheet
October 2002
Austin MicroLynxTM SMT Non-isolated dc-dc Power Modules
3.0 – 5.0 Vdc Input; 0.75 Vdc – 3.63 Vdc Output; 5A Output Current
Feature Descriptions (Continued)
Overcurrent Protection
To provide protection in a fault condition, the unit
is equipped with internal non-latching internal
overcurrent protection. The unit operates normally
once the fault condition is removed.
Input Undervoltage Lockout
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.
Thermal Considerations
The power module operates in a variety of thermal
environments; however, sufficient cooling should
be provided to help ensure reliable operation of
the unit. Heat is removed by conduction,
convection and radiation to the surrounding
environment.
The thermal data presented is based on
measurement taken in a wind tunnel. The test
set-up is shown in Figure 25 was used to collect
data for Figures 26 and 27. Note that the airflow is
parallel to the short axis of the module as shown
in Figure 24. The derating data applies to airflow
along either direction of the module’s short axis.
Tyco Electronics Corp.
Figure 24. Temperature measurement location
The temperature at Pin Y of X1 or X2 should not
exceed zzzoC. The output power of the module
should not exceed the rated power of the module
(Vo,set x Io,max).
Convection Requirements for Cooling
To predict the approximate cooling needed for the
module, refer to power derating curve in Figures
26 and 27.
The derating curve is approximation of the
ambient temperatures and airflows required to
keep the power module temperature below rating.
Once the module is assembled in the actual
system, the module’s temperature should be
checked as shown in Figure 25 to ensure it does
not exceed zzzoC. Proper cooling can be verified
by measuring the power module’s temperature at
x1-pin y and x2-piny as shown in Figure 24.
11
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