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PQ48015QGA25PNS Datasheet(PDF) 7 Page - SynQor Worldwide Headquarters |
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PQ48015QGA25PNS Datasheet(HTML) 7 Page - SynQor Worldwide Headquarters |
7 / 13 page Product # PQ48015QGA25 Phone 1-888-567-9596 Doc.# 005-2QG451D Rev. E 9/30/08 Page 7 Performance Curves 48Vin 1.5Vout 25A Quarter Quarter Brick Brick Figure 14: Input Terminal Ripple Current, ic, at full rated output cur- rent and nominal input voltage with 10µH source impedance and 47µF electrolytic capacitor (100 mA/div). See Figure 13. Figure 15: Input reflected ripple current, is, through a 10 µH source inductor at nominal input voltage and rated load current (10 mA/div). See Figure 13. Figure 16: Output voltage ripple at nominal input voltage and rated load current (20 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. See Figure 13. Figure 13: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 14), Input Reflected Ripple Current (Figure 15) and Output Voltage Ripple (Figure 16). 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 5 10 15 20 25 30 Load Current (A) 36 V 48 V 75 V Figure 17: Output voltage vs. load current showing typical current limit curves and converter shutdown points. Figure 18: Load current (20A/div) as a function of time when the con- verter attempts to turn on into a 10 m Ωshort circuit. Top trace (2.5ms/div) is an expansion of the on-time portion of the bottom trace. 10 µH source impedance DC/DC Converter Figure 15 Figure 14 Figure 16 1 µF ceramic capacitor 10 µF, 100m Ω ESR tantalum capacitor 47 µF, <1 Ω ESR electrolytic capacitor VSOURCE i S i C VOUT |
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