ISL6441IRZ datasheet(9/18 Pages) INTERSIL

Part #	ISL6441IRZ

Description	1.4MHz Dual, 180 Out-of-Phase, Step-Down PWM and Single Linear Controller

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Manufacturer	INTERSIL [Intersil Corporation]

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9 / 18 page

9

FN9197.1

October 4, 2005

FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V)

FIGURE 8. LOAD TRANSIENT RESPONSE VOUT2 (3.3V)

FIGURE 9. PWM SOFT-START WAVEFORM

FIGURE 10. OVERCURRENT HICCUP MODE OPERATION

FIGURE 11. PWM1 EFFICIENCY vs LOAD, VIN = 5V,

VOUT = 3.3V

FIGURE 12. PWM2 EFFICIENCY vs LOAD, VIN = 5V,

VOUT = 3.3V

Typical Performance Curves (Continued)

Oscilloscope Plots are Taken Using the ISL6441AEVAL Evaluation Board, VIN = 12V, Unless Otherwise Noted.

VOUT1 200mV/DIV

IOUT1 1A/DIV

AC COUPLED

VOUT2 200mV/DIV

AC COUPLED

IOUT2 1A/DIV

VCC_5V 1V/DIV

VOUT1 1V/DIV

VOUT1 2V/DIV

IL1 2A/DIV

SS1 2V/DIV

70

80

100

01

2.5

3.5

LOAD CURRENT (A)

0.5

1.5

2

3

4

90

70

80

100

01

2.5

3.5

LOAD CURRENT (A)

0.5

1.5

2

3

4

90

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ISL6441IRZ Datasheet(PDF) 9 Page - Intersil Corporation

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