QHW100G1 Lineage Power, QHW100G1 Datasheet - Page 8

• Manufacturer Part Number: QHW100G1
• Manufacturer: Lineage Power

dc-dc Converters: 36 to 75 Vdc Input, 2.5 Vdc Output; 25 W to 50 W
Characteristic Curves
Note: Tested with a 220 µF aluminum and a 1.0 µF ceramic capacitor
Figure 13. Typical QHW100G1 Transient Response
Note: Tested with a 220 µF aluminum and a 1.0 µF ceramic capacitor
Figure 14. QHW050G1, QHW075G1, and
8 8
across the load.
across the load.
10 A
5 A
to Step Decrease in Load from 50% to
25% of Full Load at Room Temperature
and 48 Vdc Input (Waveform Averaged to
Eliminate Ripple Component.)
QHW100G1 Typical Start-Up from
Remote On/Off; I
TIME, t (2 ms/div)
TIME, t (100 µs/div)
O
= I
(continued)
O, max
8-2685(C).a
1-0010
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 16. Peak-to-Peak Output Noise
Note: All measurements are taken at the module terminals. When
Figure 17. Output Voltage and Efficiency
BATTERY
Figure 15. Input Reflected-Ripple Test Setup
SUPPLY
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(–)
]I
TEST
]I
I
10 μF
O
V
V
⎞ x 100
⎠
O
O
(+)
(–)
ESR < 0.7 Ω
SCOPE
@ 100 kHz
DISTRIBUTION LOSSES
CURRENT
33 μF
S
I
O
PROBE
offsets possible bat-
CONTACT AND
Lineage Power
April 2008
%
RESISTIVE
LOAD
LOAD
8-513 (F).d
8-203 (F).l
V
V
8-749 (F)
I
I
(+)
(–)