IR3871MPBF 데이터 시트보기 (PDF) - International Rectifier

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IR3871MPBF

8A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

International Rectifier 

IR3871MPBF

TYPICAL OPERATING DATA

Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, Vout = 1.05V, Fs = 300kHz, TA = 25oC, no airflow,

unless otherwise specified

VOUT

VOUT

PHASE

iL

PHASE

iL

50mV/div 10V/div 2A/div

20µs/div

Figure 14: Load Transient 0-4A

50mV/div 10V/div 2A/div

20µs/div

Figure 15: Load Transient 4-8A

Figure 16: Thermal Image at VIN = 12V, IOUT =

8A (IR3871: 66oC, Inductor: 58oC, PCB: 40oC)

Figure 17: Thermal Image at VIN = 19V, IOUT =

8A (IR3871: 71oC, Inductor: 59oC, PCB: 44oC)

10

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