Delta-electronics Q48DR Instrukcja Użytkownika Pobierz pdf (Strona 6)

DS_Q48DR1R533_03152007

ELECTRICAL CHARACTERISTICS CURVES

Figure 13: Output voltage response to step-change in load

current Iout2 (75%-50%-75% of Io, max; di/dt = 2.5A/µs) at

Iout1=7.5A. Load cap: 470µF, 35m

Ω

ESR solid electrolytic

capacitor and 1µF ceramic capacitor. Ch1=Vout2

(200mV/div), Ch2=Iout2 (7.5A/div), Ch3=Vout1 (200mV/div),

Ch4=Iout1 (7.5A/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 14: Output voltage response to step-change in load

current Iout1 (75%-50%-75% of Io, max; di/dt = 2.5A/µs) at

Iout2=7.5A. Load cap: 470µF, 35m

Ω

ESR solid electrolytic

capacitor and 1µF ceramic capacitor. Ch1=Vout2 (200mV/div),

Ch2=Iout2 (7.5A/div), Ch3=Vout1 (200mV/div), Ch4=Iout1

(7.5A/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 15: Output voltage response to step-change in load

current Iout2 and Iout1 (75%-50%-75% of Io, max; di/dt =

2.5A/µs). Load cap: 470µF, 35m

Ω

ESR solid electrolytic

capacitor and 1µF ceramic capacitor. Ch1=Vout2

(200mV/div), Ch2=Iout2 (7.5A/div), Ch3=Vout1 (200mV/div),

Ch4=Iout1 (7.5A/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 16: Test set-up diagram showing measurement points for

Input Terminal Ripple Current and In

ut 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

Ch4

Ch3

Ch2

Ch1

Ch4

Ch3

Ch2

Ch1

Ch4

Ch3

Ch2

Ch1

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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