Delta-electronics Delphi Series S48SS Manuel d'utilisateur télécharger pdf (Page 4)

DS_s48SS12001_06082006

ELECTRICAL CHARACTERISTICS CURVES

Figure5: Turn-on transient at zero load current (10 ms/div). Top

Trace: Vout (5V/div); Bottom Trace: ON/OFF Control (2V/div).

Figure 6: Output voltage response to step-change in load

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

cap: 10µF, 100 m

Ω



ESR tantalum capacitor and 1µF

ceramic capacitor. Top Trace: Vout (50mV/div), Bottom

Trace: Iout (0.5A/div).

20﹫100KHz℃20 ℃100KHz﹫

Ω

ESR< 0.3 ESR< 0.3

TEST

12uH

Cs:68uF/100V 68uF/100V

Vi(-)

Vi(+)

Ω

Figure 7: Test set-up diagram showing measurement points for

Input Reflected Ripple Current (Figure 8).

Note: Measured input reflected-rip

le current with a simulated

source Inductance (L

TEST

)

of 12 µH. Capacitor Cs offset possible

battery impedance.

Figure 8: Input Reflected Ripple Current, i

, at full rated

output current and nominal input voltage with 12µH source

impedance and 68µF electrolytic capacitor (2 mA/div)

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Delta-electronics Delphi Series S48SS Manuel d'utilisateur Page 4