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=0. Load cap: 470µF, 35m

capacitor and 1µF ceramic capacitor. Ch1=Vout2 (50mV/div),

Ch2=Iout2 (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=0A, Load cap: 470µF, 35m

capacitor and 1µF ceramic capacitor. Ch1=Vout1 (50mV/div),

Ch2=Iout1 (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

capacitor and 1µF ceramic capacitor. Ch1=Vout1 (50mV/div),

Ch2=Iout1 (10A/div), Ch3=Vout2 (100mV/div), Ch4=Iout2

(10A/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 Input Reflected Ripple Current.

Note: Measured input reflected-ripple current with a simulated

battery impedance. Measure current as shown above.

DS_Q48DW3R312_07202006

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