Delta-electronics E48SH Instrukcja Użytkownika Pobierz pdf (Strona 5)

ELECTRICAL CHARACTERISTICS CURVES

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. Trace: Vout

(20mV/div, 100us/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. Trace: Vout

(20mV/div, 100us/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 above

Figure 11: Input Terminal Ripple Current, i

, at full rated output

current and nominal input voltage with 12µH source impedance

and 33µF electrolytic capacitor (200 mA/div, 2us/div).

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Delta-electronics E48SH Instrukcja Użytkownika Strona 5