LC/LW010- and LC/LW015-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet
March 27, 2008
Test Configurations
COPPER STRIP
0.47 µF
TO OSCILLOSCOPE
VO1(+
)
CURRENT
PROBE
R
LOAD1
SCOPE
SCOPE
0.47 µF
L
TEST
VI(+)
12 µH
S 220 µF
COM
C
33 µF
IMPEDANCE < 0.1 Ω
@ 20 ˚C, 100 kHz
BATTERY
0.47 µF
0.47 µF
RLOAD2
VI(-)
VO2(-)
8-203(C)
8-808(C).d
Note: Input reflected-ripple current is measured with a simulated
source impedance of 12 µH. Capacitor Cs offsets possible
battery impedance. Current is measured at the input of the
module.
Note: Use four 0.47 µF ceramic capacitors. Scope measurement
should be made using a BNC socket. Position the load
between 50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 36. Peak-to-Peak Output Noise
Measurement Test Setup for Dual
Outputs
Figure 33. Input Reflected-Ripple Test Setup
COPPER STRIP
VO(+)
CONTACT AND
DISTRIBUTION LOSSES
RESISTIVE
LOAD
0.47 µF
0.47 µF
SCOPE
VO1
VI(+)
LOAD
IO
VO(–)
II
COM
SUPPLY
LOAD
8-513(C).g
VO2
VI(-)
CONTACT
RESISTANCE
Note: Use two 0.47 µF ceramic capacitors. Scope measurement
should be made using a BNC socket. Position the load
8-863(C).a
between 50 mm and 75 mm (2 in. and 3 in.) from the module.
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 34. Peak-to-Peak Output Noise
Measurement Test Setup for Single
Outputs
2
[VOJ – COM]IOJ
∑
J = 1
--------------------------------------------------
η =
x100
CONTACT AND
DISTRIBUTION LOSSES
[VI(+) – VI(–)]II
VI(+)
VI(-)
VO(+)
VO(-)
II
IO
LOAD
SUPPLY
Figure 37. Output Voltage and Efficiency
Measurement Test Setup for Dual
Outputs
CONTACT RESISTANCE
8-204(C)
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
[VO(+) – VO(–)]IO
[VI(+) – VI(–)]II
⎛
⎝
⎞
⎠
------------------------------------------------
η =
× 100
Figure 35. Output Voltage and Efficiency
Measurement Test Setup for Single
Outputs
14
Lineage Power
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
