IR3892M_15 Datasheet, PDF (39/52 Pages) International Rectifier – Single-Input Voltage, Synchronous Buck Regulator

IR3892
TYPICAL OPERATING WAVEFORMS
Vin=PVin=12V, Vo1=1.8V, Iout1=0-6A, Vo2=1.2V, Iout1=0-6A, Fs=600kHz, Room Temperature, No air flow
Figure 32: Startup with full load
CH1:Vout1, Ch2:Vout2, Ch3:Vin, CH4:Vcc
Figure 33: PGood signals at Startup with full load
CH1:Vout1, Ch2:Vout2, Ch3:PGood1, CH4:PGood2
Figure 34: Channel 1 Startup with Pre-Bias, 1.52V
CH1:Vout1, Ch3:PGood1, Ch4:Enable1
Figure 35: Channel 2 Startup with Pre-Bias, 1.05V
CH2: Vout2, Ch2: PGood2 , Ch4:Enable2
Figure 36: Inductor Switch Nodes at full load
CH1:SW1, Ch2:SW2
Figure 37: Output Voltage Ripples at full load
CH1:Vout1, Ch2:Vout2
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May 29, 2014