Delta Electronics E48SR Manuale Utente Scaricare il pdf (Pagina 5)

DS_E48SR15004_05222008

ELECTRICAL CHARACTERISTICS CURVES

Figure 8: Output voltage response to step-change in load

current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap:

10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:

Vout (0.2V/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 (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:

47µF, 35m

ESR solid electrolytic capacitor and 1µF ceramic

capacitor. Top Trace: Vout (0.2V/div,,200us/div

)

, Bottom Trace:

Iout (1A/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

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Delta Electronics E48SR Manuale Utente Pagina 5