H48SN28012PRFA datasheet(5/13 Pages) DELTA

Part #	H48SN28012PRFA

Description	Delphi Series H48SN, 350W HalfBrick Family DC/DC Power Modules: 48V in, 28V/12.5A out

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Manufacturer	DELTA [Delta Electronics, Inc.]

Direct Link	http://www.deltaww.com

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ELECTRICAL CHARACTERISTICS CURVES

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

current (75%-50% of Io, max; di/dt = 1A/10µS). Load cap:

330µF aluminum,10uF Low ESR capacitor and 1µF ceramic

capacitor. Top Trace: Vout (100mV/div), Bottom Trace: Iout

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

current (50%-75% of Io, max; di/dt = 1A/10µS). Load cap:

330µF aluminum,10uF Low ESR capacitor and 1µF ceramic

capacitor. Top Trace: Vout (100mV/div), Bottom Trace: Iout

(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: 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.

H48SN28012_09262006

5

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