DS_S48SE05003_12292006
4
ELECTRICAL CHARACTERISTICS CURVES (CON.)
Figure 7: (For positive remote on/off logic)Turn-on transient at zero
load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div; Bottom
Trace: ON/OFF input, 2V/div.
Figure 8: Output voltage response to step-change in load current
(75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum
capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div,
200us/div), Bottom Trace: Iout (1
/div). Scope measurement
should be made using a BNC cable (length shorter than 20
inches). Position the load between 51 mm to 76 mm (2 inches to 3
inches) from the module.
Figure 9: Output voltage response to step-change in load current
(50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum
capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div,
200us/div), Bottom Trace: Iout (1
/div). Scope measurement
should be made using a BNC cable (length shorter than 20 inches).
Position the load between 51 mm to 76 mm (2 inches to 3 inches)
from the module.
Figure 10: Test set-up diagram showing measurement points for
Input Terminal Ripple Current and Input Reflected Ripple Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
of 12 µH. Capacitor Cs offset possible
battery impedance. Measure current as shown below.
