参数资料
型号: AXA005A0X-SRZ
厂商: LINEAGE POWER LLC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT, SMT-5
文件页数: 2/21页
文件大小: 578K
代理商: AXA005A0X-SRZ
Data Sheet
October 1, 2009
Austin MicroLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 5A output current
LINEAGE POWER
10
Test Configurations
TO OSCILLOSCOPE
CURRENT PROBE
LTEST
1μH
B
A
TTE
R
Y
CS 1000μF
Electrolytic
E.S.R.<0.1
Ω
@ 20°C 100kHz
2x100μF
Tantalum
VIN(+)
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.
CIN
Figure 23. Input Reflected Ripple Current Test Setup.
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.
VO(+)
COM
1uF .
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Figure 24. Output Ripple and Noise Test Setup.
VO
COM
VIN(+)
COM
RLOAD
Rcontact
Rdistribution
Rcontact
Rdistribution
Rcontact
Rdistribution
VIN
VO
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 25. Output Voltage and Efficiency Test Setup.
η =
VO. IO
VIN. IIN
x 100 %
Efficiency
Design Considerations
Input Filtering
The Austin MicroLynx
TM 12V 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.
In a typical application, 2x47 F low-ESR tantalum
capacitors (AVX part #: TPSE476M025R0100, 47F 25V
100 m ESR tantalum capacitor) will be sufficient to
provide adequate ripple voltage at the input of the
module. To minimize ripple voltage at the input, low
ESR ceramic capacitors are recommended at the input of
the module. Figure 26 shows input ripple voltage (mVp-
p) for various outputs with 2x47 F tantalum capacitors
and with 2x 22 F ceramic capacitor (TDK part #:
C4532X5R1C226M) at full load.
Input
R
ippl
e
Vol
tage
(mVp-
p
)
0
50
100
150
200
250
300
350
0
1
23
456
Ceramic
Tantalum
Output Voltage (Vdc)
Figure 26. Input ripple voltage for various output
with 2x47 F tantalum capacitors and with 2x22 F
ceramic capacitors at the input (80% of Io,max).
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