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BQ55090EZB48xyz-G Datasheet(PDF) 8 Page - SynQor Worldwide Headquarters |
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BQ55090EZB48xyz-G Datasheet(HTML) 8 Page - SynQor Worldwide Headquarters |
8 / 13 page Product # BQ55090EZB48 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006251 Rev. C 02/17/16 Page 8 Input: 35-55V Output: 9.6V Current: 48A Package: Eighth-brick 0 3 6 9 12 15 0 10 20 30 40 50 60 Load Current (A) 35 Vin 48 Vin 55 Vin source impedance DC-DC Converter Input Terminal Ripple Current Input Reflected Ripple Current Output Voltage Ripple ceramic capacitor tantalum capacitor electrolytic capacitor VSOURCE VOUT i S i C 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). Figure 14: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 10µH source impedance and 47µF electrolytic capacitor (1A/div). See Figure 13. Figure 15: Input reflected ripple current, is, through a 10µH source inductor, using a 47µF electrolytic input capacitor (20mA/div). See Figure 13. Figure 16: Output voltage ripple at nominal input voltage and rated load current (50mV/div). Load capacitance: 1µF ceramic capacitor and 15µF tantalum capacitor. Bandwidth: 20MHz. See Figure 13. Figure 17: Output voltage vs. load current for different input voltages showing typical current limit curves. Figure 18: Load current (50A/div) as a function of time when the converter attempts to turn on into a 1mΩ short circuit. Top trace (500µs/div) is an expansion of the on-time portion of the bottom trace. Technical Figures |
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