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Q48SB9R650NRFC Datasheet(PDF) 5 Page - Delta Electronics, Inc. |
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Q48SB9R650NRFC Datasheet(HTML) 5 Page - Delta Electronics, Inc. |
5 / 12 page ELECTRICAL CHARACTERISTICS CURVES Figure 8: Output voltage response to step-change in load current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 200us/div), Bottom Trace: Iout (10A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module. Figure 9: Output voltage response to step-change in load current (50%-75%-50% of Io,max; di/dt=1A/µs). Load cap: 10uF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 200us/div), Bottom Trace: Iout (10A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module. Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple Current. Note: Measured input reflected-ripple current with a simulated source Inductance (LTEST) of 12 µH. Capacitor Cs offset possible battery impedance. Measure current as shown below Figure 11: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 12µH source impedance and 47µF electrolytic capacitor (1A/div, 2us/div). Vin+ Vin- is ic 100uF, ESR=0.2 ohm @ 25oC 100KHz Cs: 220uF + + Vin+ Vin- is ic 100uF, ESR=0.2 ohm @ 25oC 100KHz Cs: 220uF + + + + DS_Q48SB9R650_07102006 5 |
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