Product # DQ65033QMA06

Phone 1-888-567-9596

Doc.# 005-2DQ653E Rev. H

7/7/04

Page 8

T

pecification

Input:

Input:

Outputs:

Outputs:

Current:

Current:

ackage:

35-75V

35-75V

5.0V & 3.3V

5.0V & 3.3V

60W

60W

Quarter-brick

Quarter-brick

Figure 23: Test set-up diagram showing measurement points for Input

Terminal Ripple Current (Figure 24), Input Reflected Ripple Current

(Figure 25) and Output Voltage Ripple (Figure 26).

source

impedance

DC/DC

Converter

See Fig. 25

See Fig. 24

See Fig. 26

ceramic

capacitors

15 µF,

300m

Ω ESR

tantalum

capacitors

47 µF,

<1

Ω ESR

electrolytic

capacitor

i

S

i

C

COM

(-)

Figure 24: Input Terminal Ripple Current, 3.3V & 5.0V outputs at 50%

Figure 19: Turn-on transient at full rated load current (resistive load)

(10 ms/div). Input voltage pre-applied. Ch 1: 3.3Vout (2V/div); Ch 2:

5.0Vout (2V/div), Ch 3: ON/OFF input (5V/div)

Figure 20: Turn-on transient at zero load current (10 ms/div). Ch 1:

3.3Vout (2V/div); Ch 2: 5.0Vout (2V/div). Ch 3: ON/OFF input

(5V/div).

Imax; dI/dt = 0.1A/µs). Load cap: 15µF, 300 m

Ω

ESR tantalum cap & 1µF ceramic

cap. Vout (200mV/div), Iout (10A/div). Ch1:Vout1; Ch2:Iout1; Ch3:Vout2; Ch4:Iout2

Imax; dI/dt = 0.1A/µs). Load cap: 15µF, 300 m

Ω

ESR tantalum cap & 1µF ceramic

cap.. Vout (200mV/div), Iout (10A/div). Ch1:Vout1; Ch2:Iout1; Ch3:Vout2; Ch4:Iout2

3.3Vout

5.0Iout

3.3Iout

5.0Vout

3.3Vout

5.0Iout

3.3Iout

5.0Vout

3.3Vout

5.0Vout

3.3Vout

5.0Vout