JW150H Lineage Power, JW150H Datasheet - Page 10
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JW150H
Manufacturer Part Number
JW150H
Description
Manufacturer
Lineage Power
Datasheet
1.JW150H.pdf
(20 pages)
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dc-dc Converters; 36 to 75 Vdc Input, 24 Vdc Output; 50 W to 175 W
Test Configurations
Note: Measure input reflected-ripple current with a simulated source
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tan-
Figure 21. Peak-to-Peak Output Noise
10
10
BAT T ER Y
Figure 20. Input Reflected-Ripple Test Setup
inductance (L
tery impedance. Measure current as shown above.
talum capacitor. Scope measurement should be made using a
BNC socket. Position the load between 51 mm and 76 mm
(2 in. and 3 in.) from the module.
T O O SC ILLO SC O PE
V
V
Measurement Test Setup
O
O
(+)
(–)
TEST
C
ESR < 0.1 •
@ 20 °C , 100 kH z
) of 12 µH. Capacitor C
S
COPPER STRIP
1.0 µF
220 µ F
12 µ H
L
T E S T
10 µF
ESR < 0.7 •
@ 100 kH z
33 µ F
SCOPE
C U R R EN T
PR O BE
S
offsets possible bat-
RESISTIVE
LOAD
8-513 (C).d
8-203 (C).l
V
V
I
I
( + )
( –)
Note: All measurements are taken at the module terminals. When
Figure 22. Output Voltage and Efficiency
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. For the test configuration in Figure 20, a 33 µF
electrolytic capacitor (ESR < 0.7 ¾ at 100 kHz)
mounted close to the power module helps ensure sta-
bility of the unit. For other highly inductive source
impedances, consult the factory for further application
guidelines.
η
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
=
⎛
⎝
SUPPLY
[
----------------------------------------------- -
RESISTANCE
V
[
Measurement Test Setup
CONTACT
V
O
I
(+) – V
(+) – V
I
I
O
I
(–)
(–)
V
V
I
I
(+)
(–)
]I
]I
I
O
SENSE(+)
SENSE(–)
⎞ x 100
⎠
V
V
O
O
(+)
(–)
DISTRIBUTION LOSSES
I
O
CONTACT AND
Lineage Power
April 2008
%
LOAD
8-749 (C)