JAW075F1 Datasheet, PDF (7/16 Pages) Lineage Power Corporation – Distributed power architectures

Data Sheet
April 2008
JAW050F and JAW075F Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 33 W to 50 W
Characteristic Curves (continued)
Test Configurations
TO OSCILLOSCOPE
BATTERY
LTEST
CURRENT
PROBE
12 μH
CS 220 μF
ESR < 0.1 Ω
@ 20 °C, 100 kHz
33 μF
ESR < 0.7 Ω
@ 100 kHz
VI(+)
VI(–)
3.75 A
8-203 (F).l
Note: Measure input reflected-ripple current with a simulated source
inductance (LTEST) of 12 µH. Capacitor CS offsets possible bat-
tery impedance. Measure current as shown above.
Figure 11. Input Reflected-Ripple Test Setup
TIME, t (200 μs/div)
Note: Tested without any load capacitance.
8-3346 (F)
Figure 9. Typical JAW075F Transient Response 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.)
VO(+)
VO(–)
COPPER STRIP
1.0 μF
10 μF SCOPE
RESISTIVE
LOAD
8-513 (F).d
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tan-
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.
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
TIME, t (10 ms/div)
Note: Tested without any load capacitance.
8-3347 (F)
Figure 10. JAW050F1 Typical Start-Up from Remote
On/Off; IO = IO, max
Lineage Power
II
SUPPLY
SENSE(+)
VI(+)
VO(+)
CONTACT AND
DISTRIBUTION LOSSES
IO
LOAD
CONTACT
RESISTANCE
VI(–)
VO(–)
SENSE(–)
8-749 (F)
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.
η
=
⎛
⎝
-^[--V-_[--V-^O---_I-(-(-+-+--)-)---–-–-----V-V---^O-_I--(-(-–-–--)-)--_]-^]-I-I-_I-^O--_⎠⎞
x 100
%
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
7