JBW050A Power Modules: dc-dc Converter;
36 to 75 Vdc Input, 5 Vdc Output; 50 W
Data Sheet
March 27, 2008
Characteristic Curves
(continued)
OUTPUT VOLTAGE, V
O
(V) OUTPUT CURRENT, I
O
(A)
(50 mV/div)
(2 A/div)
OUTPUT VOLTAGE, V
O
(V) REMOTE ON/OFF PIN,
(1 V/div)
V
ON/OFF
(V)
TIME, t (5 ms/div)
1-0695
TIME, t (100 µs/div)
1-0693
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 7. Typical Start-Up from Remote On/Off;
I
O
= I
O, max
Figure 5. Typical Transient Response to Step
Decrease in Load from 50% to 25% of
Full Load at Room Temperature and 48 V
Input (Waveform Averaged to Eliminate
Ripple Component.)
Test Configurations
TO OSCILLOSCOPE
CURRENT
PROBE
V
I
(+)
L
TEST
OUTPUT VOLTAGE, V
O
(V) OUTPUT CURRENT, I
O
(A)
(50 mV/div)
(2 A/div)
12
μH
C
S
220
μF
ESR < 0.1
Ω
@ 20
°C,
100 kHz
BATTERY
33
μF
ESR < 0.7
Ω
@ 100 kHz
V
I
(–)
8-203.l
Note: Measure input reflected-ripple current with a simulated source
inductance (L
TEST
) of 12 µH. Capacitor C
S
offsets possible bat-
tery impedance. Measure current as shown above.
Figure 8. Input Reflected-Ripple Test Setup
TIME, t (100 µs/div)
1-0694
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 6. Typical Transient Response to Step
Increase in Load from 50% to 75% of Full
Load at Room Temperature and
48 V Input (Waveform Averaged to
Eliminate Ripple Component.)
6
Lineage Power
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
