Delta Electronics H48SN

ELECTRICAL CHARACTERISTICS CURVES

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

current and nominal input voltage with 12µH source impedance

and 220µF electrolytic capacitor (1A/div).

Figure 12: Input reflected ripple current, is, through a 12µH

source inductor at nominal input voltage and rated load current

(10 mA/div)

Vo(-)

Vo(+)

10u 1u

Copper Strip

SCOPE RESISTIV

LOAD

Figure 13: Output voltage noise and ripple measurement test

setup

H48SN28012_01172008

Contents

Main Delphi Series H48SN, 350W Half Brick Family DC/DC Power Modules: 48V in, 28V/12.5A out APPLICATIONS OPTIONS TECHNICAL SPECIFICATIONS (TA=25C, airflow rate=600 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) 2 H48SN28012_01172008 PARA MET ER NOTES and CONDITIONS H48SN28012 (Standard) H48SN28012_01172008 For Negative Remote On/Off Logic For Positive Remote On/Off Logic 4 Page Page H48SN28012_01172008 DESIGN CONSIDERATIONS Input Source Impedance 8 Layout and EMC Considerations Safety Considerations FEATURES DESCRIPTIONS Over-Current Protection Over-Voltage Protection Over-Temperature Protection FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) 10 ( THERMAL CONSIDERATIONS Thermal Testing Setup THERMAL CURVES MECHANICAL DRAWING Pin No. Pin S ecificatio Name Function PART NUMBERING SYSTEM MODEL LIST