iru3055 International Rectifier Corp., iru3055 Datasheet - Page 17

• Manufacturer Part Number: iru3055
• Description: 5-bit Programmable 3-phase Synchronous Buck Controller Ic -
• Manufacturer: International Rectifier Corp.

TEST WAVEFORMS FOR TYPICAL APPLICATION (1)
Rev. 1.4
08/13/02
Figure 16 - 60A Dynamic load response with 20A/ms slew rate.
Ch3: Output voltage, 100mV/div, AC.
Ch4: Load current, 20A/us, sensed by 2mV resistor, 25A/div.
Figure 14 - 3-Phase inductor current at 60A load,
Ch1, Ch2 and Ch3: 10A/div. Ch4: gate signal.
Figure 15 - Soft-start, Vcore and PGood.
V
Vss
CORE
PGood
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Figure 18 - 60A load dynamic waveforms with three-phase
Figure 19 - 60A load dynamic waveforms with three-phase
Ch3: Output voltage, 100mV/div, AC.
Ch4: Load current, 20A/us, sensed by 2mV resistor, 25A/div.
Ch1, Ch2 and Ch3: Inductor current, 10A/div.
Ch4: Load current, 20A/us, sensed by 2mV resistor, 25A/div.
Ch1, Ch2 and Ch3: Inductor current, 10A/div.
Ch4: Load current, 20A/us, sensed by 2mV resistor, 25A/div.
Figure 17 - Zoomed 60A Load dynamic (rising).
inductor current. (Zoomed)
inductor current.
IRU3055
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