Delta-electronics Delphi Series E24SR Manuel d'utilisateur télécharger pdf (Page 5)

DS_E24SR05012_01032008

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 (100mV/div, 200us/div

)

, Bottom Trace: Iout

/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 = 1

/µs). Load cap:

470µF, 35m

ESR solid electrolytic capacitor and 1µF ceramic

capacitor.

Top Trace: Vout (100mV/div, 200us/div

)

, Bottom Trace: Iout

(5A/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 Delphi Series E24SR Manuel d'utilisateur Page 5