ISL8036IRZ-T Просмотр технического описания (PDF) - Intersil

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ISL8036IRZ-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)

SYNCH 5V/DIV

VOUT2 RIPPLE 20mV/DIV

IL2 1A/DIV

LX2 2V/DIV

SYNCH 5V/DIV

VOUT1 RIPPLE 20mV/DIV

IL1 2A/DIV

LX1 2V/DIV

FIGURE 22. STEADY STATE OPERATION CHANNEL 2 AT

NO LOAD WITH FSW = 2.4MHz

FIGURE 23. STEADY STATE OPERATION CHANNEL 1 AT

FULL LOAD WITH FSW = 2.4MHz

LX2 2V/DIV

SYNCH 5V/DIV

SYNCH 5V/DIV

LX1 2V/DIV

IL2 2A/DIV

VOUT2 RIPPLE 20mV/DIV

VOUT1 RIPPLE 20mV/DIV

IL1 2A/DIV

FIGURE 24. STEADY STATE OPERATION CHANNEL 2 AT

FULL LOAD WITH FSW = 2.4MHz

FIGURE 25. STEADY STATE OPERATION CHANNEL 1 AT

NO LOAD WITH FSW = 6MHz

LX2 2V/DIV

PHASE1 5V/DIV

VOUT2 RIPPLE 20mV/DIV

IL2 2A/DIV

SYNCH 5V/DIV

FIGURE 26. STEADY STATE OPERATION CHANNEL 2 AT

NO LOAD WITH FSW = 5MHz

13

VOUT1 1V/DIV

PG1 5V/DIV

IL1 1A/DIV

FIGURE 27. OUTPUT SHORT CIRCUIT CHANNEL 1

FN6853.1

October 18, 2010

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