JAHW075A Lineage Power, JAHW075A Datasheet - Page 9

• Manufacturer Part Number: JAHW075A
• Manufacturer: Lineage Power

April 2008
Characteristic Curves
Figure 17.Typical JAHW100A Startup at applied V
Figure 18.Typical JAHW100A Remote Startup
Lineage Power
V
IN
= 48 V
TIME, t (20 ms/div)
TIME, t (5 ms/div)
(continued)
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 to 100 W
1-0458
1-0459
IN
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 20. Peak-to-Peak Output Noise
Note: All measurements are taken at the module terminals. When
Figure 21. Output Voltage and Efficiency
BATTERY
SUPPLY
Figure 19. Input Reflected-Ripple Test Setup
η
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.
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
RESISTANCE
V
V
=
CONTACT
O
O
(+)
(–)
TO OSCILLOSCOPE
⎛
⎝
[
----------------------------------------------- -
V
Measurement Test Setup
[
Measurement Test Setup
I
V
I
O
I
(+) – V
(+) – V
TEST
COPPER STRIP
1.0 μF
C
ESR < 0.1 Ω
@ 20 °C, 100 kHz
) of 12 µH. Capacitor C
V
V
S
I
I
220 μF
(+)
(–)
O
I
(–)
(–)
12 μH
L
SENSE(+)
SENSE(–)
TEST
]I
]I
I
10 μF
O
V
V
⎞ x 100
⎠
O
O
(+)
(–)
ESR < 0.7 Ω
SCOPE
@ 100 kHz
DISTRIBUTION LOSSES
CURRENT
S
I
33 μF
O
PROBE
offsets possible bat-
CONTACT AND
%
RESISTIVE
LOAD
LOAD
8-513 (F).d
8-203 (F).l
8-749 (F)
V
V
I
I
(+)
(–)
9