Delta Electronics Series Q48DR manual Electrical Characteristics Curves

ELECTRICAL CHARACTERISTICS CURVES

ELECTRICAL CHARACTERISTICS CURVES

Ch1	Ch1
	Ch1
Ch2	Ch2
	Ch2
Ch3	Ch3
Ch4	Ch3
	Ch4
	Ch4

6

Figure 9: Output voltage response to step-change in load

Fig re 9: Typical full load input characteristics at room
current Iout2 (75%-50%-75% of Io, max; di/dt = 2.5A/µs) at
temperature	Ω	ESR solid electrolytic
Iout1=7.5A. Load cap: 470µF, 35m
capacitor and 1µF ceramic	capacitor. Ch1=Vout2

(100mV/div), Ch2=Iout2 (7.5A/div), Ch3=Vout1 (100mV/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 10: Output voltage response to step-change in load Figcurrentr 10: Output voltage response to step-change in load Iout1 (75%-50%-75% of Io, max; di/dt = 2.5A/µs) at cuIout2=rren Iout2 (75%-50%-75% of Io, max;Ω di/dt = 0.1A/µs) at 7.5A. Load cap: 470µF, 35m ESR solid electrolytic

Iout1=7.5A. Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor and 1µF ceramic capacitor. Ch1=Vout2 (100mV/div), capacitor. Ch1=Vout2 (100mV/div), Ch2=Iout2 (7.5A/div), Ch2=Iout2 (7.5A/div), Ch3= out1 (100mV/div), Ch4=Iout1 Ch3=Vout1 (100mV/div), Ch4=Iout1 (7.5A/div) Scope (7.5A/div) Scope measurement should be made using a BNC mcableasurement should be made using a BNC cable (length shorter (length horter than 20 inches). Position the load between than 20 inches). Position the load between 51 mm to 76 mm (2

51 mm to 76 mm (2 inches to 3 inches) from the module. inches to 3 inches) from the module.

	Ch1
Ch1		Ch1
	Ch2
Ch2		Ch2
	Ch3
Ch3	Ch4	Ch3
Ch4		Ch4

Figure 11: Output voltage response to step-change in load

Figure 12: Test set-up diagram showing measurement points for

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

Input

Terminal

Ripple

Current and

Input Reflected

Ripple

2.5A/µs). Load cap: 470µF, 35mΩ ESR solid electrolytic

FigCurrentre

.

Output voltage

response to step-change

in

load

Figure 11: Output voltage response to step-change in load

12:

or

and 1µF

ceramic

. Ch1=Vout2

currNote:nt

Measurt2Io

e

input reflected-ripple current with

simulated

currencapacitI ut1 (75%-50%-75% of Io, mcapacx; di/ditor= 0.1A/µs) at

and

Io 1 (75%-50%-75% of Io, max;

di/dt =

(100mV/div), Ch2=Iout2 (7.5A/div), Ch3=Vou 1 (100mV/div),

Inductance (LTEST) of 12 µH. Ca

citor Cs offset possible

Iout2=7.5A. Load cap: 10µF, tantalum capacitor and 1µF

0.1A/µsource). Load cap: 10µF, tantalum cappacitor and 1µF ceramic

Ch4=Iout1 (7.5A/div) Scope measurement should be made

impedance. Measure current as shown above

ceramic capacitor. Ch1=Vout2 (100 V/div), Ch2=Iout2

n

capbatterycitor.

Ch1=Vout2

(100mV/div),

Ch2=Iout2 (7.5A/div),

using a

cable (length shorter than 20 inches).

Ch3=Vout1

(100mV/div),

Ch4=Iout1

(7.5A/div)

Scope

(7.5A/div),BNCh3=Vout1

(100mV/div), Ch4=Iout1 (7.5A/dPositiov)

the load b tween 51 mm to 76 mm (2

hes to 3 inches)

measurement should be made using a BNC cable (length shorter

Scope measurement should be made usincg a BNC cabl

from the module.

than 20 inches). Position the load between 51 mm to 76 mm (2

(length shorter than 20 inches). Position the load between

51 mm to 76 mm (2 inches to 3 inches) from the module.

inches to 3 inches) from the module.

5

DS_Q48DR1R833_03162007