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PQ55540HTM05NRS Datasheet(PDF) 7 Page - SynQor Worldwide Headquarters |
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PQ55540HTM05NRS Datasheet(HTML) 7 Page - SynQor Worldwide Headquarters |
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7 / 13 page  Product # PQ55540HTL05 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2HT554F Rev. A 04/20/06 Page 7 Input: Input: Output: Output: Current: Current: PPackage: ackage: 38-55 V 38-55 V 54 V 54 V 5.1 A 5.1 A (275W) (275W) Half-brick Half-brick T Technical S echnical Specification pecification 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). 10 µH source impedance DC/DC Converter See Fig. 15 See Fig. 14 See Fig. 16 1 µF ceramic capacitor 200 µF, 450m Ω ESR electrolytic capacitor 47 µF, <1 Ω ESR electrolytic capacitor VSOURCE i S i C VOUT 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 (200 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 (50 mV/div). Load capacitance: 1µF ceramic capacitor and 200µF electrolytic capacitor. Bandwidth: 20 MHz. (See Figure 13) Figure 17: Output voltage response to step-change in input voltage (1000V/ms). Load cap: 200µF, electrolytic output capacitance. Ch 1: Vin (10V/div), Ch 2: Vout (1V/div). Figure 18: Load current (2A/div) as a function of time when the con- verter attempts to turn on into a 3.3 Ω short circuit. Top trace (2.5ms/div) is an expansion of the on-time portion of the bottom trace. |
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