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PQ60120HTA14NKS Datasheet(PDF) 7 Page - SynQor Worldwide Headquarters |
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PQ60120HTA14NKS Datasheet(HTML) 7 Page - SynQor Worldwide Headquarters |
7 / 14 page 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). Product # PQ60120HTA14 Phone 1-888-567-9596 Doc.# 005-2HT612F Rev. D 9/9/04 Page 7 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 (5 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 15µF tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13) 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 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 (10A/div) as a function of time when the con- verter attempts to turn on into a 1 m Ω short circuit. Top trace (2ms/div) is an expansion of the on-time portion of the bottom trace. Half Half Brick Brick Performance Curves 48Vin 12Vout 13.8A 10 µH source impedance DC/DC Converter See Fig. 15 See Fig. 14 See Fig. 16 1 µF ceramic capacitor 15 µF, 450m Ω ESR tantalum capacitor 47 µF, <1 Ω ESR electrolytic capacitor VSOURCE i S i C VOUT |
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