JC050C1 Datasheet, PDF (7/16 Pages) Lineage Power Corporation – Distributed power architectures

Data Sheet
March 2008
JC050C, JC075C, JC100C Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 15 Vdc Output; 50 W to 100 W
Characteristic Curves (continued)
Test Configurations
TO OSCILLOSCOPE
LTEST
12 µH
CURRENT
PROBE
BATTERY
CS 220 µF
ESR < 0.1 Ω
@ 20 ˚C, 100 kHz
33 µF
ESR < 0.7 Ω
@ 100 kHz
VI(+)
VI(–)
TIME, t (200 ms/div)
8-1957 (C)
Figure 9. Typical JC100C Transient Response to
Step Increase in Load From 50% to 75%
of Full Load at Room Temperature and 28
V Input (Waveform Averaged to Eliminate
Ripple Component.)
8-203 (C).l
Note:Measure input reflected-ripple current with a simulated source
inductance (LTEST) of 12 µH. Capacitor CS offsets possible
battery impedance. Measure current as shown above.
Figure 11. Input Reflected-Ripple Test Setup
VO(+)
VO(–)
COPPER STRIP
1.0 µF
10 µF SCOPE
RESISTIVE
LOAD
9V
8-513 (C).d
Note:Use a 1.0 µF ceramic capacitor and a 10 µF aluminum
or 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.
0V
Figure 12. Peak-to-Peak Output Noise
15 V
Measurement Test Setup
0V
TIME, t (5 µs/div)
8-2055 (C)
Figure 10.Typical Start-Up from Remote On/Off
JC100C1; IO = Full Load
II
SUPPLY
SENSE(+)
VI (+)
VO(+)
CONTACT AND
DISTRIBUTION LOSSES
IO
LOAD
CONTACT
RESISTANCE
VI (–)
VO(–)
SENSE(–)
8-749 (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.
Lineage Power
η
=
⎛
⎝
[_--V[_---V--o_--i-((_--++_---)_-)---––_----V_-V----oi_--(-(_----_-)-)_-]-]_-I-I_-i-o_{-⎠⎞}
× 100
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
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