Delta-electronics S48SR Manual do Utilizador descarregar pdf (Página 4)

DS_S48SR12001_07052006

ELECTRICAL CHARACTERISTICS CURVES

Figure 5: Turn-on transient at zero load current (10 ms/div).

Top Trace: Vin (20V/div) Bottom Trace Vout (5V/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-ripple 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 12

µH source

impedance and 68

µF electrolytic capacitor (2 mA/div).

1 2 3 4 5 6 7 8 9 10 11 12

Sem comentários

Delta-electronics S48SR Manual do Utilizador Página 4