JW075R Lineage Power, JW075R Datasheet - Page 11

• Manufacturer Part Number: JW075R
• Manufacturer: Lineage Power

April 2008
Characteristic Curves
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
Figure 25. Typical Start-Up from Remote On/Off
Test Configurations
Note: Measure input reflected-ripple current with a simulated source
Lineage Power
BAT T ER Y
Figure 26. Input Reflected-Ripple Test Setup
across the load.
inductance (L
tery impedance. Measure current as shown above.
T O O SC ILLO SC O PE
JW075R1; I
TEST
C
ESR < 0.1 •
@ 20 °C , 100 k H z
) of 12 µH. Capacitor C
S
220 µ F
TIME, t (5 ms/div)
O
12 µ H
L
= I
T E S T
O, max
dc-dc Converters; 36 to 75 Vdc Input, 28 Vdc Output; 50 W to 150
(continued)
ESR < 0.7 •
@ 100 k H z
33 µ F
C U R R EN T
PR O BE
S
offsets possible bat-
8-2129 (C)
8-203 (C).l
V
V
I
I
( + )
( –)
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or
Figure 27. Peak-to-Peak Output Noise
Note: All measurements are taken at the module terminals. When
Figure 28. 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 26, 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
tantalum 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.
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
V
V
=
O
O
(+)
(–)
⎛
⎝
[
----------------------------------------------- -
V
Measurement Test Setup
Measurement Test Setup
[
SUPPLY
V
O
RESISTANCE
CONTACT
I
(+) – V
(+) – V
COPPER STRIP
1.0 µF
I
I
O
I
(–)
(–)
V
V
]I
]I
I
I
(+)
(–)
I
O
10 µF
⎞ x 100
⎠
SENSE(+)
SENSE(–)
V
V
O
O
(+)
(–)
SCOPE
DISTRIBUTION LOSSES
I
O
CONTACT AND
%
RESISTIVE
LOAD
8-513 (C).d
LOAD
8-749 (C)
11