IR3863MPBF
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T A = 25 o C, no
airflow, unless otherwise specified
VOUT
VOUT
PHASE
PHASE
i L
i L
50mV/div 10V/div 2A/div
50μs/div
50mV/div 10V/div 2A/div
50μs/div
Figure 14: Load Transient 0-2A
Figure 15: Load Transient 3-5A
FCCM
FCCM
PHASE
PHASE
VOUT
VOUT
i L
i L
5V/div 10V/div 500mV/div 5A/div
10μs/div
2V/div 10V/div 500mV/div 5A/div
5μs/div
Figure 16: DCM/FCCM Transition
Figure 18: Thermal Image at VIN = 12V, I OUT =
6A (IR3863: 60 o C, Inductor: 45 o C, PCB: 32 o C)
8/8/2012 Rev3.2
Figure 17: FCCM/DCM Transition
Figure 19: Thermal Image at VIN = 16V, I OUT =
6A (IR3863: 61 o C, Inductor: 46 o C, PCB: 33 o C)
10
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