Q48SQ12033NNFH datasheet(5/13 Pages) DELTA

Part #	Q48SQ12033NNFH

Description	Delphi Series Q48SQ, Quarter Brick Family DC/DC Power Modules 36~75V in, 12V/33A out, 400W

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Manufacturer	DELTA [Delta Electronics, Inc.]

Direct Link	http://www.deltaww.com

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DS_Q48SQ12033_09272013

5

ELECTRICAL CHARACTERISTICS CURVES

Figure 8: Output voltage response to step-change in load

current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 100uF

Al-Electrolytic capacitor, 10µF tantalum capacitor and 1µF

ceramic capacitor. Top Trace: Vout; 100mV/div; Bottom Trace:

output current: 10A/div, Time: 200us/div

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

current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap:

100uF Al-Electrolytic capacitor, 10µF tantalum capacitor and

1µF ceramic capacitor. Top Trace: Vout; 100mV/div; Bottom

Trace: output current: 10A/div, Time: 200us/div

Figure 10: 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

source Inductance (LTEST) of 12 μH. Capacitor Cs offset

possible battery impedance. Measure current as shown above.

Figure 11: Input Terminal Ripple Current, ic, at full rated output

current and nominal input voltage with 12µH source impedance

and 33µF electrolytic capacitor (200 mA/div，2us/div).

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