10

IR3863MPBF

8/8/2012 Rev3.2

Figure 14: Load Transient 0-2A

Figure 15: Load Transient 3-5A

Figure 18: Thermal Image at VIN = 12V, I

VOUT

PHASE

i

L

VOUT

PHASE

i

L

50µs/div

50µs/div

Figure 19: Thermal Image at VIN = 16V, I

Figure 16: DCM/FCCM Transition

Figure 17: FCCM/DCM Transition

FCCM

FCCM

PHASE

PHASE

i

L

i

L

VOUT

VOUT

10µs/div

5A/div

5µs/div

5A/div

TYPICAL OPERATING DATA

Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T

airflow, unless otherwise specified