ISL8036AIRZ-T 데이터 시트보기 (PDF) - Intersil

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ISL8036AIRZ-T

Dual 3A 1MHz/2.5MHz High Efficiency Synchronous Buck Regulator

Intersil 

ISL8036, ISL8036A

ISL8036 Typical Operating Performance for Dual PWM Operation

Unless otherwise noted, operating conditions are: VOUT1 = 1.8V; VOUT2 = 0.8V; IOUT1 = 0A to 3A; IOUT2 = 0A to 3A,

FSW = 1MHz. (Continued)

LX2 2V/DIV

LX1 2V/DIV

VOUT2 RIPPLE 20mV/DIV

IL2 0.5A/DIV

VOUT RIPPLE 20mV/DIV

IL1 2A/DIV

FIGURE 10. STEADY STATE OPERATION AT NO LOAD

CHANNEL 2

FIGURE 11. STEADY STATE OPERATION WITH FULL

LOAD CHANNEL 1

LX2 2V/DIV

VOUT RIPPLE 50mV/DIV

VOUT RIPPLE 20mV/DIV

IL2 2A/DIV

FIGURE 12. STEADY STATE OPERATION WITH FULL

LOAD CHANNEL 2

IL1 2A/DIV

FIGURE 13. LOAD TRANSIENT CHANNEL 1

VOUT2 RIPPLE 20mV/DIV

IL2 2A/DIV

FIGURE 14. LOAD TRANSIENT CHANNEL 2

11

EN1 2V/DIV

VOUT 1V/DIV

IL1 0.5A/DIV

PG1 5V/DIV

FIGURE 15. SOFT-START WITH NO LOAD CHANNEL 1

FN6853.1

October 18, 2010

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